Coefficient Quotes

We've searched our database for all the quotes and captions related to Coefficient. Here they are! All 100 of them:

Every woman I had ever met who walked through the world appraised and classified by an extraordinary physicality had also received the keys to an unbearable solitude. It was the coefficient of their beauty, the price they had to pay.
Pat Conroy (The Prince of Tides)
What’s Julie’s number?” Curran glanced at me. “Julie’s fluctuating between thirty-two and thirty-four units. Her shift coefficient is six point five and she’s been at it for sixteen hours.” Dear God, I’d need a damn calculator.
Ilona Andrews (Magic Slays (Kate Daniels, #5))
The Mind is the sole coefficient of Time and Space. - Wole Soyinka
Majemite Jaboro (The Ikoyi Prison Narratives: The Spiritualism and Political Philosophy of Fela Kuti)
Well, the Taco Bell burrito scale of immense magnitude returned an 'r' factor of point eight six. Then when I applied the nose-picking coefficient, I discovered a multivariate numeration of nine dot oh sixteen on the Richter scale.
Debra Dunbar (Devil's Paw (Imp, #4))
The most widely accepted measure for calculating income inequality is a century-old formula called the Gini coefficient. It's a gold standard for economists around the globe, along with the World bank, the CIA, and the Paris-based Organization for Economic Cooperation and Development. What it reveals is startling. Today the United States has the most unequal society of all developed nations. America’s level of inequality is comparable to that of Russia, China, Argentina, and the war-torn Democratic Republic of the Congo.
Jessica Bruder (Nomadland: Surviving America in the Twenty-First Century)
This positive void coefficient remained a fatal defect at the heart of Atom Mirny-1 and overshadowed the operation of every Soviet water-graphite reactor that followed.
Adam Higginbotham (Midnight in Chernobyl: The Untold Story of the World's Greatest Nuclear Disaster)
You Bastard was thinking: there seems to be some growing dimensional instability here, swinging from zero to nearly forty-five degrees by the look of it. How interesting. I wonder what’s causing it? Let V equal 3. Let Tau equal Chi/4. cudcudcud Let Kappa/y be an Evil-Smelling-Bugger* (* Renowned as the greatest camel mathematician of all time, who invented a math of eight-dimensional space while lying down with his nostrils closed in a violent sandstorm.) differential tensor domain with four imaginary spin co-efficients. . .
Terry Pratchett (Pyramids (Discworld, #7))
Simple problems are hard to solve, Because they need common sense. Simple problems are made complex. Complex things are solved using patterns. Coefficient is introduced along with variable to create a pattern, But coefficient is a constant. To find coefficient, We again use complex patterns to make it look constant.
Abraham Varghese
But eighteen seconds is a long time in neutron physics—and an eternity in a nuclear reactor with a high positive void coefficient.
Adam Higginbotham (Midnight in Chernobyl: The Untold Story of the World's Greatest Nuclear Disaster)
The Gini Coefficient quantifies how large a percentage of the total income of a society must be redistributed in order to achieve a perfectly equal distribution of wealth.
Michael Booth (The Almost Nearly Perfect People: Behind the Myth of the Scandinavian Utopia)
Those who are unacquainted with the details of scientific investigation have no idea of the amount of labour expended in the determination of those numbers on which important calculations or inferences depend. They have no idea of the patience shown by a Berzelius in determining atomic weights; by a Regnault in determining coefficients of expansion; or by a Joule in determining the mechanical equivalent of heat.
John Tyndall
Life, my dear Mamselle, can't be reckoned up correctly without cooking the accounts a bit, and our mistake lies in this: that when we grapple with great things, we never take the human coefficient into consideration. All the confusion comes from that...Don't be upset by the coefficient, Mamselle. It contains all the savor and glamor of life. Otherwise every lout would just drink up life to the dregs, and then put a bullet into his brain...Because then his brain would ask for something beyond life...No matter what happens, keep on living, Mamselle. A living human being is, after all, Nature's most beautiful creation.
Leonid Leonov (The Thief)
Facebook automatically catalogued every tiny action from its users, not just their comments and clicks but the words they typed and did not send, the posts they hovered over while scrolling and did not click, and the people's names they searched and did not befriend. They could use that data, for instance, to figure out who your closest friends were, defining the strength of the relationship with a constantly changing number between 0 and 1 they called a "friend coefficient". The people rated closest to 1 would always be at the top of your news feed.
Sarah Frier (No Filter: The Inside Story of Instagram)
A good manager drives a project to be good enough, fast enough, cheap enough, and done as much as necessary. A good manager manages the coefficients on these attributes rather than demanding that all those coefficients are 100%. It is this kind of management that Agile strives to enable.
Robert C. Martin (Clean Agile: Back to Basics (Robert C. Martin Series))
But as no two (theoreticians) agree on this (skin friction) or any other subject, some not agreeing today with what they wrote a year ago, I think we might put down all their results, add them together, and then divide by the number of mathematicians, and thus find the average coefficient of error. (1908)
Hiram Stevens Maxim (Artificial and Natural Flight)
In these times, when so wide a gulf has opened between the rich and the poor, which, instead of narrowing, as all good men would have it, grows broader daily; it is most important that all ranks and degrees of people should understand whose hands are stretched out to separate these two great divisions of society each of whom, for its strength and happiness, and the future existence of this country, as a great and powerful nation, is dependent on the other.
Charles Dickens
A government commission into the accident found serious faults with the design, and in 1976 recommended that the void coefficient be lowered, the control rod design be altered, and for ‘fast-acting emergency protection’ to be installed. New designs were drawn up for the rods, but were never installed on any reactors.
Andrew Leatherbarrow (Chernobyl 01:23:40: The Incredible True Story of the World's Worst Nuclear Disaster)
statistical indices such as the Gini coefficient give an abstract and sterile view of inequality, which makes it difficult for people to grasp their position in the contemporary hierarchy (always a useful exercise, particularly when one belongs to the upper centiles of the distribution and tends to forget it, as is often the case with economists).
Thomas Piketty (Capital in the Twenty-First Century)
Furious, the beast writhed and wriggled its iterated integrals beneath the King’s polynomial blows, collapsed into an infinite series of indeterminate terms, then got back up by raising itself to the nth power, but the King so belabored it with differentials and partial derivatives that its Fourier coefficients all canceled out (see Riemann’s Lemma), and in the ensuing confusion the constructors completely lost sight of both King and beast. So they took a break, stretched their legs, had a swig from the Leyden jug to bolster their strength, then went back to work and tried it again from the beginning, this time unleashing their entire arsenal of tensor matrices and grand canonical ensembles, attacking the problem with such fervor that the very paper began to smoke. The King rushed forward with all his cruel coordinates and mean values, stumbled into a dark forest of roots and logarithms, had to backtrack, then encountered the beast on a field of irrational numbers (F1) and smote it so grievously that it fell two decimal places and lost an epsilon, but the beast slid around an asymptote and hid in an n-dimensional orthogonal phase space, underwent expansion and came out, fuming factorially, and fell upon the King and hurt him passing sore. But the King, nothing daunted, put on his Markov chain mail and all his impervious parameters, took his increment Δk to infinity and dealt the beast a truly Boolean blow, sent it reeling through an x-axis and several brackets—but the beast, prepared for this, lowered its horns and—wham!!—the pencils flew like mad through transcendental functions and double eigentransformations, and when at last the beast closed in and the King was down and out for the count, the constructors jumped up, danced a jig, laughed and sang as they tore all their papers to shreds, much to the amazement of the spies perched in the chandelier-—perched in vain, for they were uninitiated into the niceties of higher mathematics and consequently had no idea why Trurl and Klapaucius were now shouting, over and over, “Hurrah! Victory!!
Stanisław Lem (The Cyberiad)
Personal knowledge is an intellectual commitment, and as such inherently hazardous. Only affirmations that could be false can be said to convey objective knowledge of this kind. All affirmations published in this book are my own personal commitments; they claim this, and no more than this, for themselves. Throughout this book I have tried to make this situation apparent. I have shown that into every act of knowing there enters a passionate contribution of the person knowing what is being known, and that this coefficient is no mere imperfection but a vital component of his knowledge. And around this central fact I have tried to construct a system of correlative beliefs which I can sincerely hold, and to which I can see no acceptable alternatives. But ultimately, it is my own allegiance that upholds these convictions, and it is on such warrant alone that they can lay claim to the reader’s attention. M. P. Manchester August 1957
Michael Polanyi (Personal Knowledge: Towards a Post-Critical Philosophy)
The Gini coefficient, devised by the Italian sociologist Corrado Gini in 1912, is a measure of income or wealth disparity in a population. It is usually expressed as a fraction between 0 and 1, and it seems easy to understand, because 0 is the coefficient if everyone owned an equal amount, while 1 would obtain if one person owned everything and everyone else nothing. In our real world of the mid-twenty-first century, countries with a low Gini coefficient, like the social democracies, are generally a bit below 0.3, while highly unequal countries are a bit above 0.6. The US, China, and many other countries have seen their Gini coefficients shoot up in the neoliberal era, from 0.3 or 0.4 up to 0.5 or 0.6, this with barely a squeak from the people losing the most in this increase in inequality, and indeed many of those harmed often vote for politicians who will increase their relative impoverishment. Thus the power of hegemony: we may be poor but at least we’re patriots! At least we’re self-reliant and we can take care of ourselves, and so on, right into an early grave, as the average lifetimes of the poorer citizens in these countries are much shorter than those of the wealthy citizens. And average lifetimes overall are therefore decreasing for the first time since the eighteenth century. Don’t think that the Gini coefficient alone will describe the situation, however; this would be succumbing to monocausotaxophilia, the love of single ideas that explain everything, one of humanity’s most common cognitive errors. The
Kim Stanley Robinson (The Ministry for the Future)
The most widely accepted measure for calculating income inequality is a century-old formula called the Gini coefficient. It’s a gold standard for economists around the globe, along with the World Bank, the CIA, and the Paris-based Organization for Economic Cooperation and Development. What it reveals is startling. Today the United States has the most unequal society of all developed nations. America’s level of inequality is comparable to that of Russia, China, Argentina, and the war-torn Democratic Republic of the Congo.
Jessica Bruder (Nomadland: Surviving America in the Twenty-First Century)
Major changes were made to the RBMK design, including improving the speed at which control rods entered the core during a SCRAM event, lowering the time for a complete insertion from 18 seconds to 12; reducing the positive steam void coefficient of reactivity, and the effect of reactivity if there was a complete void in the core; installation of a Fast Acting Emergency Protection system, complete with an additional 24 control rods; removing the ability to bypass emergency protection systems while the reactor was at power, and, most importantly, a new control rod layout with a longer boron section and no empty/water section ahead of it. The graphite tip remained.264
Andrew Leatherbarrow (Chernobyl 01:23:40: The Incredible True Story of the World's Worst Nuclear Disaster)
You can write great books," the great man continued. "Or you can have kids. It's up to you." [...] Writing was a practice. The more you wrote, the better a writer you became, and the more books you produced. Excellence plus productivity, that was the formula for sustained success, and time was the coefficient of both. Children, the great man said, were notorious thieves of time. [...] Writers need to be irresponsible, ultimately, to everything but the writing, free of commitments to everything but the daily word count. Children, by contrast, needed stability, consistency, routine, and above all, commitment. In short, he was saying, children are the opposite of writing.
Michael Chabon (Pops: Fatherhood in Pieces)
This was, he told the King, a femfatalatron, an erotifying device stochastic, elastic and orgiastic, and with plenty of feedback; whoever was placed inside the apparatus instantaneously experienced all the charms, lures, wiles, winks and witchery of all the fairer sex in the Universe at once. The femfatalatron operated on a power of forty megamors, with a maximum attainable efficiency—given a constant concupiscence coefficient—of ninety-six percent, while the system's libidinous lubricity, measured of course in kilocupids, produced up to six units for every remote-control caress. This marvelous mechanism, moreover, was equipped with reversible ardor dampers, omnidirectional consummation amplifiers, absorption philters, paphian peripherals, and "first-sight" flip-flop circuits, since Trurl held here to the position of Dr. Yentzicus, creator of the famous oculo-oscular feel theory. There were also all sorts of auxiliary components, like a high-frequency titillizer, an alternating tantalator, plus an entire set of lecherons and debaucheraries; on the outside, in a special glass case, were enormous dials, on which one could carefully follow the course of the whole decaptivation process. Statistical analysis revealed that the femfatalatron gave positive, permanent results in ninety-eight cases of unrequited amatorial superfixation out of a hundred.
Stanisław Lem (The Cyberiad)
In a hypothetical, extremely simple Cloud Ark consisting of only two arklets, only one calculation needed to be performed: namely, the calculation that answered the question “Will Arklet 1 bang into Arklet 2 if both stay on their current courses?” In a three-arklet cloud, it was also necessary to figure out whether Arklet 1 would collide with Arklet 3, and whether 2 and 3 were going to collide. So, that was a total of three calculations. If the cloud expanded to four arklets, six calculations were needed, and so on. In mathematical terms these were known as triangular numbers, a kind of binomial coefficient, but the bottom line was that the number of calculations went up rapidly with the number of arklets in the cloud.
Neal Stephenson (Seveneves)
And by the early 1970s our little parable of Sam and Sweetie is exactly what happened to the North American Golden Retriever. One field-trial dog, Holway Barty, and two show dogs, Misty Morn’s Sunset and Cummings’ Gold-Rush Charlie, won dozens of blue ribbons between them. They were not only gorgeous champions; they had wonderful personalities. Consequently, hundreds of people wanted these dogs’ genes to come into their lines, and over many matings during the 1970s the genes of these three dogs were flung far and wide throughout the North American Golden Retriever population, until by 2010 Misty Morn’s Sunset alone had 95,539 registered descendants, his number of unregistered ones unknown. Today hundreds of thousands of North American Golden Retrievers are descended from these three champions and have received both their sweet dispositions and their hidden time bombs. Unfortunately for these Golden Retrievers, and for the people who love them, one of these time bombs happens to be cancer. To be fair, a so-called cancer gene cannot be traced directly to a few famous sires, but using these sires so often increases the chance of recessive genes meeting—for good and for ill. Today, in the United States, 61.4 percent of Golden Retrievers die of cancer, according to a survey conducted by the Golden Retriever Club of America and the Purdue School of Veterinary Medicine. In Great Britain, a Kennel Club survey found almost exactly the same result, if we consider that those British dogs—loosely diagnosed as dying of “old age” and “cardiac conditions” and never having been autopsied—might really be dying of a variety of cancers, including hemangiosarcoma, a cancer of the lining of the blood vessels and the spleen. This sad history of the Golden Retriever’s narrowing gene pool has played out across dozens of other breeds and is one of the reasons that so many of our dogs spend a lot more time in veterinarians’ offices than they should and die sooner than they might. In genetic terms, it comes down to the ever-increasing chance that both copies of any given gene are derived from the same ancestor, a probability expressed by a number called the coefficient of inbreeding. Discovered in 1922 by the American geneticist Sewall Wright, the coefficient of inbreeding ranges from 0 to 100 percent and rises as animals become more inbred.
Ted Kerasote (Pukka's Promise: The Quest for Longer-Lived Dogs)
There’s one major shortcoming inherent to using this method of cooling. Unlike in a typical PWR, the water entering the reactor is the same water that passes through the cooling pumps and then as steam through the turbines, meaning highly irradiated water is present in all areas of the system. A PWR uses a heat exchanger to pass heat from the reactor water to clean, lower pressure water, allowing the turbines to remain free of contamination. This is better for safety, maintenance and disposal. A second problem is that steam is allowed to form in the core, making dangerous steam voids more likely, and further increasing the chances of a positive void coefficient. In ordinary boiling water reactors, which use water as both a coolant and moderator like in a PWR, this would not be such a problem, but it is in a graphite-moderated BWR.
Andrew Leatherbarrow (Chernobyl 01:23:40: The Incredible True Story of the World's Worst Nuclear Disaster)
Separation of function is not to be despised, but neither should it be exalted. Separation is not an unbreakable law, but a convenience for overcoming inadequate human abilities, whether in science or engineering. As D'Arcy Thompson, one of the spiritual fathers of the general systems movement, said: As we analyze a thing into its parts or into its properties, we tend to magnify these, to exaggerate their apparent independence, and to hide from ourselves (at least for a time) the essential integrity and individuality of the composite whole. We divided the body into its organs, the skeleton into its bones, as in very much the same fashion we make a subjective analysis of the mind, according to the teaching of psychology, into component factors: but we know very well that judgement and knowledge, courage or gentleness, love or fear, have no separate existence, but are somehow mere manifestations, or imaginary coefficients, of a most complex integral.10 The
Gerald M. Weinberg (An Introduction to General Systems Thinking)
Page 50: It is a common misconception that psychological measurements of human abilities are generally more prone to error or inaccuracy than are physical measurements. In most psychological research, and especially in psychometrics, this kind of measurement error is practically negligible. If need be, and with proper care, the error variance can usually be made vanishingly small. In my laboratory, for example, we have been able to measure such variables as memory span, flicker-fusion frequency (a sensory threshold), and reaction time (RT) with reliability coefficients greater than .99 (that is, less than 1 percent of the variance in RT is due to errors of measurement). The reliability coefficients for multi-item tests of more complex mental processes, such as measured by typical IQ tests, are generally about .90 to .95. This is higher than the reliability of people's height and weight measured in a doctor's office! The reliability coefficients of blood pressure measurements, blood cholesterol level, and diagnosis based on chest X-rays are typically around .
Arthur R. Jensen (The g Factor: The Science of Mental Ability (Human Evolution, Behavior, and Intelligence))
The main circulating pumps began to cavitate and fill with steam, reducing the flow of valuable cooling water and allowing steam voids (pockets of steam where there should be water) to form in the core. A positive void coefficient was occurring: the absence of cooling water causing an exponential power increase. In simple terms, more steam = less water = more power = more heat = more steam. Because 4 of the 8 water pumps were running off the decelerating turbine, less and less water was supplied to the reactor as power increased. Throughout the building, ‘knocks’ were heard from the direction of the main reactor hall. Akimov’s control board indicated that the rods hadn’t moved far before freezing, only 2.5 meters from their raised position. Thinking quickly, he released the clutch on their servomotors to allow the heavy rods to fall into the core under their own weight, but they didn’t move: jammed. “I thought my eyes were coming out of my sockets. There was no way to explain it,” recalled Dyatlov, six years later. “It was clear that this was not a normal accident, but something much more terrible. It was a catastrophe.”118
Andrew Leatherbarrow (Chernobyl 01:23:40: The Incredible True Story of the World's Worst Nuclear Disaster)
So they rolled up their sleeves and sat down to experiment -- by simulation, that is mathematically and all on paper. And the mathematical models of King Krool and the beast did such fierce battle across the equation-covered table, that the constructors' pencils kept snapping. Furious, the beast writhed and wriggled its iterated integrals beneath the King's polynomial blows, collapsed into an infinite series of indeterminate terms, then got back up by raising itself to the nth power, but the King so belabored it with differentials and partial derivatives that its Fourier coefficients all canceled out (see Riemann's Lemma), and in the ensuing confusion the constructors completely lost sight of both King and beast. So they took a break, stretched their legs, had a swig from the Leyden jug to bolster their strength, then went back to work and tried it again from the beginning, this time unleashing their entire arsenal of tensor matrices and grand canonical ensembles, attacking the problem with such fervor that the very paper began to smoke. The King rushed forward with all his cruel coordinates and mean values, stumbled into a dark forest of roots and logarithms, had to backtrack, then encountered the beast on a field of irrational numbers (F_1) and smote it so grievously that it fell two decimal places and lost an epsilon, but the beast slid around an asymptote and hid in an n-dimensional orthogonal phase space, underwent expansion and came out fuming factorially, and fell upon the King and hurt him passing sore. But the King, nothing daunted, put on his Markov chain mail and all his impervious parameters, took his increment Δk to infinity and dealt the beast a truly Boolean blow, sent it reeling through an x-axis and several brackets—but the beast, prepared for this, lowered its horns and—wham!!—the pencils flew like mad through transcendental functions and double eigentransformations, and when at last the beast closed in and the King was down and out for the count, the constructors jumped up, danced a jig, laughed and sang as they tore all their papers to shreds, much to the amazement of the spies perched in the chandelier—perched in vain, for they were uninitiated into the niceties of higher mathematics and consequently had no idea why Trurl and Klapaucius were now shouting, over and over, "Hurrah! Victory!!
Stanisław Lem (The Cyberiad)
Using graphite as a moderator can be highly dangerous, as it means that the nuclear reaction will continue - or even increase - in the absence of cooling water or the presence of steam pockets (called ‘voids’). This is known as a positive void coefficient and its presence in a reactor is indicative of very poor design. Graphite moderated reactors were used in the USA in the 1950s for research and plutonium production, but the Americans soon realised their safety disadvantages. Almost all western nuclear plants now use either Pressurised Water Reactors (PWRs) or Boiling Water Reactors (BWRs), which both use water as a moderator and coolant. In these designs, the water that is pumped into the reactor as coolant is the same water that is enabling the chain reaction as a moderator. Thus, if the water supply is stopped, fission will cease because the chain reaction cannot be sustained; a much safer design. Few commercial reactor designs still use a graphite moderator. Other than the RBMK and its derivative, the EGP-6, Britain’s Advanced Gas-Cooled Reactor (AGR) design is the only other graphite-moderated reactor in current use. The AGR will soon be joined by a new type of experimental reactor at China’s Shidao Bay Nuclear Power Plant, which is currently under construction. The plant will house two graphite-moderated ‘High Temperature Reactor-Pebble-bed Modules’ reactors, the first of which is undergoing commissioning tests as of mid-2019.
Andrew Leatherbarrow (Chernobyl 01:23:40: The Incredible True Story of the World's Worst Nuclear Disaster)
Although Dyatlov, Shift Foreman Akimov, and Senior Reactor Control Engineer Toptunov had violated some operating regulations, they were ignorant of the deadly failing of the RBMK-1000 that meant that insertion of the control rods, instead of shutting down the reactor at the end of the test, could initiate a runaway chain reaction. Every one of the investigators behind the report now agreed that the fatal power surge that destroyed the reactor had begun with the entry of the rods into its core. ‘Thus the Chrnobyl accident comes within the standard pattern of most severe accidents in the world. It begins with an accumulation of small breaches of the regulations. … These produce a set of undesirable properties and occurrences that, when taken separately, do not seem to be particularly dangerous, but finally an initiating event occurs that, in this particular case, was the subjective actions of the personnel that allowed the potentially destructive and dangerous qualities of the reactor to be released.’ IAEA experts revealed at last the true magnitude of the technical cover-up surrounding the causes of the disaster: the long history of previous RBMK accidents, the dangerous design of the reactor, its instability, and the way its operators had been misled about its behavior. In dense scientific detail, it described the inherent problems of the positive void coefficient and the fatal consequences of the control rod ‘tip’ effect. (pp. 347-348)
Adam Higginbotham (Midnight in Chernobyl: The Untold Story of the World's Greatest Nuclear Disaster)
Much more than skeleton, it is flash, I mean the carrion flesh, which disturb and alarm us – and which alleviates us as well. The Buddhists monks gladly frequented charnel houses: where corner desire more surely and emancipate oneself from it? The horrible being a path of liberation in every period of fervor and inwardness, our remains have enjoyed great favor. In the Middle Ages, a man made a regimen of salvation, he believed energetically: the corpse was in fashion. Faith was vigorous than, invincible; it cherished the livid and the fetid, it knew the profits to be derived from corruption and gruesomeness. Today, an edulcorated religion adheres only to „nice” hallucinations, to Evolution and to Progress. It is not such a religion which might afford us the modern equivalent of the dense macabre. „Let a man who aspires to nirvana act so that nothing is dear to him”, we read in a Buddhist text. It is enough to consider these specters, to meditate on the fate of the flash which adhered to them, in order to understand the urgency of detachment. There is no ascesis in the double rumination on the flesh and on the skeleton, on the dreadful decrepitude of the one and the futile permanence of the other. It is a good exercise to sever ourselves now and then from our face, from our skin, to lay aside this deceptive sheathe, then to discard – if only for a moment – that layer of grease which keeps us from discerning what is fundamental in ourselves. Once exercise is over, we are freer and more alone, almost invulnerable. In other to vanquish attachments and the disadvantages which derive from them, we should have to contemplate the ultimate nudity of a human being, force our eyes to pierce his entrails and all the rest, wallow in the horror of his secretions, in his physiology of an imminent corpse. This vision would not be morbid but methodical, a controlled obsession, particularly salutary in ordeals. The skeleton incites us to serenity; the cadaver to renunciation. In the sermon of futility which both of them preach to us happiness is identified with the destruction of our bounds. To have scanted no detail of such a teaching and even so to come to terms with simulacra! Blessed was the age when solitaries could plumb their depths without seeming obsessed, deranged. Their imbalance was not assigned a negative coefficient, as is the case for us. They would sacrifice ten, twenty years, a whole life, for a foreboding, for a flash of the absolute. The word „depth” has a meaning only in connection with epochs when the monk was considered as the noblest human exemplar. No one will gain – say the fact that he is in the process of disappearing. For centuries, he has done no more than survive himself. To whom would he address himself, in a universe which calls him a „parasite”? In Tibet, the last country where monks still mattered, they have been ruled out. Yet is was a rare consolation to think that thousands of thousands of hermits could be meditating there, today, on the themes of the prajnaparamita. Even if it had only odious aspects, monasticism would still be worth more than any other ideal. Now more then ever, we should build monasteries … for those who believe in everything and for those who believe in nothing. Where to escape? There no longer exist a single place where we can professionally execrate this world.
Emil M. Cioran
What this means is that the (Infinity) of points involved in continuity is greater than the (Infinity) of points comprised by any kind of discrete sequence, even an infinitely dense one. (2) Via his Diagonal Proof that c is greater than Aleph0, Cantor has succeeded in characterizing arithmetical continuity entirely in terms of order, sets, denumerability, etc. That is, he has characterized it 100% abstractly, without reference to time, motion, streets, noses, pies, or any other feature of the physical world-which is why Russell credits him with 'definitively solving' the deep problems behind the dichotomy. (3) The D.P. also explains, with respect to Dr. G.'s demonstration back in Section 2e, why there will always be more real numbers than red hankies. And it helps us understand why rational numbers ultimately take up 0 space on the Real Line, since it's obviously the irrational numbers that make the set of all reals nondenumerable. (4) An extension of Cantor's proof helps confirm J. Liouville's 1851 proof that there are an infinite number of transcendental irrationals in any interval on the Real Line. (This is pretty interesting. You'll recall from Section 3a FN 15 that of the two types of irrationals, transcendentals are the ones like pi and e that can't be the roots of integer-coefficient polynomials. Cantor's proof that the reals' (Infinity) outweighs the rationals' (Infinity) can be modified to show that it's actually the transcendental irrationals that are nondenumerable and that the set of all algebraic irrationals has the same cardinality as the rationals, which establishes that it's ultimately the transcendetnal-irrational-reals that account for the R.L.'s continuity.)
David Foster Wallace (Everything and More: A Compact History of Infinity)
Perspective does not appear to me to be a subjective deformation of things but, on the contrary, to be one of their properties, perhaps their essential property. It is precisely because of it that the perceived possesses in itself a hidden and inexhaustible richness, that it is a 'thing'...Far from introducing a coefficient of subjectivity into perception, it provides us with the assurance of communicating with a world which is richer than what we know of it, that is, of communicating with a real world...The perceived is grasped in an indivisible manner as an 'in-itself,' that is, as gifted with an interior which I will never have finished exploring; and as 'for-me,' that is, as given 'in person' through its momentary aspects. Neither this metallic spot which moves while I glance toward it, nor even the geometric and shiny mass which emerges from it when I look at it, nor finally, the ensemble of perspectival images which I have been able to have of it are the ashtray; they do not exhaust the meaning of the 'this' by which I designate it; and, nevertheless, it is the ashtray which appears in all of them...Thus, to do justice to our direct experience of things it would be necessary to maintain at the same time, against empiricism, that they are beyond their sensible manifestations and, against intellectualism, that they are not unities in the order of judgment, that they are embodied in their apparitions. The 'things' in naive experience are evident as perspectival beings ...I grasp in a perspectival appearance, which I know is only one of its possible aspects, the thing itself which transcends it. A transcendence which is nevertheless open to my knowledge--this is the very definition of a thing as it is intended by naive consciousness.
Maurice Merleau-Ponty (Structure of Behavior)
The next point was made by Newton, who discussed the question: ‘When it does not go in a straight line then what?’ And he answered it this way: that a force is needed to change the velocity in any manner. For instance, if you are pushing a ball in the direction that it moves it will speed up. If you find that it changes direction, then the force must have been sideways. The force can be measured by the product of two effects. How much does the velocity change in a small interval of time? That’s called the acceleration, and when it is multiplied by the coefficient called the mass of an object, or its inertia coefficient, then that together is the force. One can measure this.
Anonymous
Whether you’re currently a marketing executive or a college grad about to enter the field—the first growth hackers have pioneered a new way. Some of their strategies are incredibly technical and complex. The strategies also change constantly; in fact, occasionally it might work only one time. This book is short because it sticks with the timeless parts. I also won’t weigh you down with heavy concepts like “cohort analysis” and “viral coefficients.”* Instead, we will focus on the mindset—it’s far and away the most important part. I start and end with my own experiences in this book, not because I am anyone special but because I think they illustrate a microcosm of the industry itself. The old way—where product development and
Ryan Holiday (Growth Hacker Marketing: A Primer on the Future of PR, Marketing, and Advertising)
The reason special names are given to these quadratic irrationalities is that any quadratic algebraic integer is a linear combination (with ordinary integers as coefficients) of 1 and one of these fundamental quadratic algebraic integers.
Timothy Gowers (The Princeton Companion to Mathematics)
The two key factors that drive viral growth are the viral coefficient and the viral cycle time.
Gabriel Weinberg (Traction: A Startup Guide to Getting Customers)
The spread is often measured by the Gini coefficient, named after Corrado Gini, an Italian economist who worked in the first half of the twentieth century. Gini’s coefficient, or simply the Gini, is a number that lies between 0 (perfect equality—everyone has the same) and 1 (perfect inequality, with one person having everything). It measures how far people are apart on average. (If you really want know the details, it is the average difference in income between all pairs of people divided by twice the average income. If there are two of us, and you have everything, the difference between us is twice the mean, and the Gini is 1. If we both have the same, the difference between us is 0, and so is the Gini.)
Angus Deaton (The Great Escape: Health, Wealth, and the Origins of Inequality)
Covariance Coefficient
Chi Yau (R Tutorial with Bayesian Statistics Using OpenBUGS)
Charles had an inbreeding coefficient of 0.254, making him slightly more inbred than a child of two siblings (0.250). He suffered from extensive physical and emotional disabilities, and was a strange (and largely ineffective) king.
Randall Munroe (What If?: Serious Scientific Answers to Absurd Hypothetical Questions)
Perhaps the most obvious difference between modern social and personality psychology is that the former is based almost exclusively on experiments, whereas the latter is usually based on correlational studies. […] In summary, over the past 50 years social psychology has concentrated on the perceptual and cognitive processes of person perceivers, with scant attention to the persons being perceived. Personality psychology has had the reverse orientation, closely examining self-reports of individuals for indications of their personality traits, but rarely examining how these people actually come off in social interaction. […] individuals trained in either social or personality psychology are often more ignorant of the other field than they should be. Personality psychologists sometimes reveal an imperfect understanding of the concerns and methods of their social psychological brethren, and they in particular fail to comprehend the way in which so much of the self-report data they gather fails to overcome the skepticism of those trained in other methods. For their part, social psychologists are often unfamiliar with basic findings and concepts of personality psychology, misunderstand common statistics such as correlation coefficients and other measures of effect size, and are sometimes breathtakingly ignorant of basic psychometric principles. This is revealed, for example, when social psychologists, assuring themselves that they would not deign to measure any entity so fictitious as a trait, proceed to construct their own self-report scales to measure individual difference constructs called schemas or strategies or construals (never a trait). But they often fail to perform the most elementary analyses to confirm the internal consistency or the convergent and discriminant validity of their new measures, probably because they do not know that they should. […] an astonishing number of research articles currently published in major journals demonstrate a complete innocence of psychometric principles. Social psychologists and cognitive behaviorists who overtly eschew any sympathy with the dreaded concept of ‘‘trait’’ freely report the use of self-report assessment instruments of completely unknown and unexamined reliability, convergent validity, or discriminant validity. It is almost as if they believe that as long as the individual difference construct is called a ‘‘strategy,’’ ‘‘schema,’’ or ‘‘implicit theory,’’ then none of these concepts is relevant. But I suspect the real cause of the omission is that many investigators are unfamiliar with these basic concepts, because through no fault of their own they were never taught them.
David C. Funder (Personality Judgment: A Realistic Approach to Person Perception)
There are two main databases, the World Bank’s PovcalNet database and the World Inequality Database. Out of the many potential measures of inequality we initially select four, (but they all tend in the same directions), to wit (i) the Gini coefficient,3 Diagram 7.1, for a number of OECD countries, (ii) for a few selected countries the share of income of the top 10 and 1% of the distribution, Tables 7.1 and 7.2, and (iii) the share of wealth for the top 10%, Table 7.3. We show these latter data points for the income inequality data at five-year intervals for the USA, UK, Germany, France, Sweden, Italy Japan, China, Brazil, Egypt and India, and the wealth inequality data for four countries, USA, China, France and UK.
Charles Goodhart (The Great Demographic Reversal: Ageing Societies, Waning Inequality, and an Inflation Revival)
I deliberately chose not to follow the statistical convention here so that our natural language processing friends feel at home once they realize that this (Pearson correlation coefficient equation) is the exact same equation as for cosine similarity.
Tarek Amr (Hands-On Machine Learning with Scikit-Learn and Scientific Python Toolkits: A practical guide to implementing supervised and unsupervised machine learning algorithms in Python)
Hamilton's original contribution was to realize that indirect fitness effects impact upon the purpose of adaptation. The basic condition for natural selection to favor any trait is that the individuals who carry genes for this trait are, on average, fitter than those who do not. However, the adaptations that subsequently evolve are not designed for maximizing the individual's personal fitness, but rather her inclusive fitness, i.e., the sum of all the fitness effects that she has on all of her genetic relatives, each increment or decrement being weighted by the corresponding coefficient of genetic relatedness (Hamilton 1964). In other words, the adaptive agent remains the same as in the traditional Darwinian view (i.e., the individual organism), but the adaptive agenda is changed. This idea has subsequently been formalized by Grafen (2006), who has shown the mathematical connection between the dynamics of natural selection and an optimization program in whih the individual strives to maximize her inclusive fitness, for a wide class of models, including those that allow for social interaction between relatives. Grafen A. 2006. Optimization of inclusive fitness. J Theor Biol 238: 541-563. Hamilton WD. 1964. The genetical evolution of social behaviour I & II. J Theor Biol 7: 1-52.
Andy Gardner (From Groups to Individuals: Evolution and Emerging Individuality (Vienna Series in Theoretical Biology))
They will still be distributed around the true coefficient for the whole population, but the shape of that distribution will not be our familiar bell-shaped normal curve.
Charles Wheelan (Naked Statistics: Stripping the Dread from the Data)
Instead, we have to assume that repeated samples of just 25 will produce more dispersion around the true population coefficient—and therefore a distribution with “fatter tails.
Charles Wheelan (Naked Statistics: Stripping the Dread from the Data)
Humanity needs injustice, which it can savour through the bitterness, the self-directed Schadenfreude that is one of the variants on the spectrum of misfortune. This mortification is particularly noticeable among the most celebrated, who like to see themselves as betrayed and misunderstood. It is the practice of evil, and hence, in a sense, the inhuman that is the distinctive mark of the human in the animal kingdom . The definition of man is narrowing to the point of merging with his mastication coefficient, his loadbearing polygon, his basic metabolism and his intelligence quotient.
Jean Baudrillard (Cool Memories V: 2000 - 2004)
And this particular camel, the result of millions of years of selective evolution to produce a creature that could count the grains of sand it was walking over, and close its nostrils at will, and survive under the broiling sun for many days without water, was called You Bastard. And he was, in fact, the greatest mathematician in the world. You Bastard was thinking: there seems to be some growing dimensional instability here, swinging from zero to nearly forty-five degrees by the look of it. How interesting. I wonder what’s causing it? Let V equal 3. Let Tau equal Chi/4. cudcudcud Let Kappa/y be an Evil-Smelling-Bugger22 differential tensor domain with four imaginary spin co-efficients … Ptraci hit him across the head with her sandal. ‘Come on, get a move on!’ she yelled. You Bastard thought: Therefore H to the enabling power equals V/s. cudcudcud Thus in hypersyllogic notation …
Terry Pratchett (Pyramids (Discworld, #7))
Cette courbe est fondamentale, car elle permet de mieux comprendre le dialogue difficile qui caractérise parfois le débat public sur la mondialisation : certains s’émerveillent de la réduction des inégalités et de la pauvreté mondiales que permettrait la formidable croissance des pays les moins avancés, alors que d’autres se lamentent de la hausse massive des inégalités qu’entraîneraient inexorablement les excès de l’hypercapitalisme mondialisé. En réalité, l’un et l’autre discours ont chacun leur part de vérité : les inégalités ont diminué entre le bas et le milieu de la répartition mondiale des revenus, et elles ont augmenté entre le milieu et le haut de la distribution. Ces deux aspects de la mondialisation sont tout aussi réels l’un que l’autre, et la question n’est pas de nier l’un ou l’autre, mais bien plutôt de savoir comment faire pour conserver les bons aspects de la mondialisation tout en se débarrassant des mauvais. On notera au passage l’importance du langage, des catégories et du dispositif cognitif utilisé : si l’on décrivait les inégalités par un indicateur unique, comme le coefficient de Gini, alors on pourrait avoir l’illusion que rien ne change, précisément car l’on ne se donnerait pas les moyens de voir que les évolutions sont complexes et multidimensionnelles, et que l’on laisse plusieurs effets se mêler et se compenser au sein d’un indicateur unique. C’est pourquoi dans ce livre je n’aurai pas recours à ce type d’indicateur « synthétique ». Je prendrai toujours soin de décrire les inégalités et leur évolution en distinguant clairement les différents déciles et centiles de revenus et patrimoines concernés, et par conséquent les groupes sociaux en jeu.
Thomas Piketty (Capital and Ideology)
In order to qualify as a protagonist, a human must be able to demonstrate an attachment coefficient of at least 0.75. A coefficient of 1.00 or above is required in order to be a hero. Factors used in calculating the coefficient include ability to believe fervency of that belief humility willingness to look stupid willingness to have heart broken willingness to see U31 as nonboring or, better yet, to see it as interesting, and maybe even important, and despite its deeply defective nature possibly even worth saving
Charles Yu (How to Live Safely in a Science Fictional Universe)
The reality is that a good project manager understands that these four attributes have coefficients. A good manager drives a project to be good enough, fast enough, cheap enough, and done as much as necessary. A good manager manages the coefficients on these attributes rather than demanding that all those coefficients are 100%. It is this kind of management that Agile strives to enable.
Robert C. Martin (Clean Agile: Back to Basics (Robert C. Martin Series))
our social organism tended to undergo a process of fission, breaking up into small groups of two or three, the relative positions of which were determined, as our mathematical member would say, by their several walking coefficients, together with the strength and duration of their talking propensities.
James Sully
She took a pen from her purse, pulled the napkin from under her drink, slightly damp, but a workable drawing space, and wrote from memory. “It may look hard, but it’s really not. It’s a mathematical relationship between compression and expansion. On the left side, the Greek symbol tau represents compression. On the right, the letter d is the expansion factor for a quantum dimension. The rest are coefficients that we’ve determined from lab tests.
Douglas Phillips (Quantum Space (Quantum #1))
Manifesto" I know that dying is how we escape the rest of our lives. I think that trees send us a message: do not believe you are lucky. The skins of apples and the peeler will marry; it's simply a question of when. Believe in mourning and carrion birds. Look how their fleshy treasures dissolve in the sun before their very eyes. To love something you must have considered what it means to do without. You must have thought about it—the coefficient of the body is another body—but do not forget that there are people who are willing to staple your palm to your chest. Know there are places it isn't wise to go. Begin again if you must: there are ways to make up for what you have been before, the dust in the corners that collects you. Sympathy is overrated. Rethink how lack becomes everyone's master, drives us into town and spends our money. Quiet: the trees are napping. Water meets itself again. We reach for the days that precede us and the world keeps us from knowing too much. The body loves music, the abandoned road of it; each day a peel lengthens in the shadow of blossoms, fabric weaves itself into light. Pay attention to the patterns. They repeat— terraces erode, groves lie fallow— order is cognate of joy.
Margot Schilpp (The World's Last Night)
Gini coefficient, scores
Ruchir Sharma (The Rise and Fall of Nations: Forces of Change in the Post-Crisis World)
Briefly, the Long Count consists of a tabulation of days elapsed since the supposed inception of the calendar, the total being expressed as so many cycles of differing magnitudes. The largest of these cycles is the baktun, containing 144,000 days; next, the katun, 7,200 days; then the tun, with 360 days; the uinal, with 20; and the smallest of all, always at the bottom of the column, the kin of one day. Each of these in the days of Maya ascendancy was shown with its own hieroglyph, while to its left stood the coefficient by which it was to be multiplied.
Michael D. Coe (America's First Civilization)
The viral coefficient measures how many new customers will use a product as a consequence of each new customer who signs up. Put
Eric Ries (The Lean Startup: The Million Copy Bestseller Driving Entrepreneurs to Success)
the level itself wasn't a mere number, but a certain coefficient that, among other things, amplified and diminished damage when the level gap was wide enough.
Arthur Stone (The Gods of the Second World (The Weirdest Noob, #3))
Intelligence coefficient does not determine the level of intelligence, but the level of socialization of an individual in a particular culture
Sunday Adelaja (The Danger Of Monoculturalism In The XXI Century)
Race does not determine the intelligent coefficient
Sunday Adelaja (The Danger Of Monoculturalism In The XXI Century)
Harley begins to panic. “Coming to Earth?! Our Earth? But I don’t want to die. There is so much I haven’t done yet – like learn Modularity Theorem!” “What is Modularity Theorem?” I ask. “The theorem states that any elliptic curve over Q can be obtained via a rational map with integer coefficients from the classical modular curve (N) for integer N and is a curve with integer coefficients with an explicit definition. If N is the smallest integer for which the parameterization can be sourced,
Peter Patrick (Middle School Super Spy: Space! (Diary Of A Super Spy Book 4))
The distribution of income in a society is called the 'Gini coefficient,' named after an Italian sociologist named Corrado Gini, who published a paper on the topic in 1912. A society where one person earns all the money and everyone else earns none, effectively has a Gini coefficient of 1.0; and a society where everyone earns the same amount has a coefficient of zero. Neither is desirable. Moderate differences in income motivate people because they have a reasonable chance of bettering their circumstances, and extreme differences discourage people because their efforts look futile. A study of 21 small-scale societies around the world found that hunter-gatherers like the Hadza—who presumably represent the most efficient possible system for survival in a hostile environment—have Gini coefficients as low as .25. In other words, they are far closer to absolute income equality than to absolute monopoly. Because oppression from one's own leaders is as common a threat as oppression from one's enemies, Gini coefficients are one reliable measure of freedom. Hunter-gatherer societies are not democracies—and many hold women in subordinate family roles—but the relationship between those families and their leaders is almost impervious to exploitation. In that sense, they are freer than virtually all modern societies. According to multiple sources, including the Congressional Budget Office, the United States has one of the highest Gini coefficients of the developed world, .42, which puts it at roughly the level of Ancient Rome. (Before taxes, the American Gini coefficient is even higher—almost .6—which is on par with deeply corrupt countries like Haiti, Namibia, and Botswana.) Moreover, the wealth gap between America's richest and poorest families has doubled since 1989. Globally, the situation is even more extreme: several dozen extremely rich people control as much wealth as the bottom half of humanity—3.8 billion people.
Sebastian Junger (Freedom)
It's tempting to imagine that economic injustice destabilizes societies to the point where they collapse and have to reform themselves, but the opposite appears to be true. Countries with large income disparities, such as the United States, are among the most powerful and wealthy countries in the world, perhaps because they can protect themselves with robust economies and huge militaries. They're just not very free. Even societies with income disparities that are truly off the chart—medieval Europe had a Gini coefficient of .79—are relatively stable until a cataclysmic event like the plague triggers a radical redistribution of wealth. During the last decades, progressive reforms have reduced the Gini coefficient—and stabilized the economies—in many Latin American countries. From every standpoint—morally, politically, economically—such reforms are clearly the right things to do. But throughout the great sweep of human history, egalitarian societies with low Gini coefficients rarely dominate world events. From the Han Dynasty of Ancient China to the Roman Empire to the United States, there seems to be a sweet spot of economic injustice that is moderately unfair to most of its citizens but produces extremely powerful societies. Economist Walter Scheidel calculates that 3,500 years ago, such large-scale states controlled only 1 percent of the Earth's habitable landmass but represented at least half the human population. By virtually any metric, that's a successful society. 'For thousands of years, most of humanity lived in the shadow of these behemoths,' Scheidel writes. 'This is the environment that created the 'original one percent,' made up of competing but often closely intertwined elite groups.' The question, then, is how do ordinary people protect their freedom in the face of such highly centralized state control?
Sebastian Junger (Freedom)
Our climb began in earnest on May 9. By then we’d successfully negotiated the Khumbu Icefall, surmounted the Western Cwm, and now were halfway up a moderately steep, four-thousand-foot wall of blue ice called the Lhotse Face, which the prudent climber will traverse very carefully. This extreme care is a function of the physics involved. With hard ice such as that found on the Lhotse Face, there is no coefficient of friction; you are traction free. Fall into an uncontrolled slide, and your chances of stopping are nil. You’re history. A Taiwanese climber named Chen Yu-Nan would discover the truth of this, to his horror, on the morning of May 9. Because the Lhotse Face is a slope, you pitch Camp Three by carving out a little ice platform for your tent, which you crawl into exhausted, desperate for some rest. No matter how tired you are, however, you must remember a couple of fairly simple rules. One, don’t sleepwalk. Two, when you get up in the morning, the very first thing you’ve got to do, without fail, is put those twelve knives on each climbing boot, your crampons, because they are what stick you down to that hill. Chen Yu-Nan forgot. He got out of his tent wearing his inner boots, took two steps, and went zhoooooooop! down into a crevasse, leading to his death.
Beck Weathers (Left for Dead: My Journey Home from Everest)
There have even been attempts to calculate income levels and Gini coefficients for Palaeolithic mammoth hunters (they both turn out to be very low).1 It’s almost as if we feel some need to come up with mathematical formulae justifying the expression, already popular in the days of Rousseau, that in such societies ‘everyone was equal, because they were all equally poor.
David Graeber (The Dawn of Everything: A New History of Humanity)
The human heart is endowed with an enormous coefficient of expansion. When it loves, it opens out in a crescendo of affection that overcomes all barriers. If
Francisco Fernández-Carvajal (In Conversation with God – Volume 5 Part 1: Ordinary Time Weeks 24- 28)
Any inhabitant with a negative attachment coefficient (in which case it is referred to as a coefficient of ironic detachment) will be placed on probation pending review of the individual’s suitability for continued inclusion within the U31 diegetic space.
Charles Yu (How to Live Safely in a Science Fictional Universe)
Perhaps the most important idea is that the rate of reversion to the mean relates to the coefficient of correlation. If the correlation between two variables is 1.0, there is no reversion to the mean. If the correlation is 0, the best guess about what the next outcome will be is simply the average. In other words, when there's no correlation between what you do and what happens, you'll see total reversion to the mean. That's why there's always a small expected loss when you play roulette, whether you've just lost or won chips. Simply having a sense of the correlations for various events can help guide us in making predictions.
Michael J. Mauboussin (The Success Equation: Untangling Skill and Luck in Business, Sports, and Investing)
Let us look at the correlation between temperature, humidity and wind speed and all other features. Since the data also contains categorical features, we cannot only use the Pearson correlation coefficient, which only works if both features are numerical. Instead, I train a linear model to predict, for example, temperature based on one of the other features as input. Then I measure how much variance the other feature in the linear model explains and take the square root. If the other feature was numerical, then the result is equal to the absolute value of the standard Pearson correlation coefficient. But this model-based approach of “variance-explained” (also called ANOVA, which stands for ANalysis Of VAriance) works even if the other feature is categorical. The “variance-explained” measure lies always between 0 (no association) and 1 (temperature can be perfectly predicted from the other feature). We calculate the explained variance of temperature, humidity and wind speed with all the other features. The higher the explained variance (correlation), the more (potential) problems with PD plots. The following figure visualizes how strongly the weather features are correlated with other features.
Christoph Molnar (Interpretable Machine Learning: A Guide For Making Black Box Models Explainable)
The Gini coefficient, devised by the Italian sociologist Corrado Gini in 1912, is a measure of income or wealth disparity in a population. It is usually expressed as a fraction between 0 and 1, and it seems easy to understand, because 0 is the coefficient if everyone owned an equal amount, while 1 would obtain if one person owned everything and everyone else nothing. In our real world of the mid-twenty-first century, countries with a low Gini coefficient, like the social democracies, are generally a bit below 0.3, while highly unequal countries are a bit above 0.6. The US, China, and many other countries have seen their Gini coefficients shoot up in the neoliberal era, from 0.3 or 0.4 up to 0.5 or 0.6, this with barely a squeak from the people losing the most in this increase in inequality, and indeed many of those harmed often vote for politicians who will increase their relative impoverishment.
Kim Stanley Robinson (The Ministry for the Future)
Pearson’s correlation coefficient is represented by the Greek letter rho (ρ) for the population parameter and r for a sample statistic. This coefficient is a single number that measures both the strength and direction of the linear relationship between two continuous variables. Values can range from -1 to +1.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
Pearson’s correlation coefficient is unaffected by scaling issues. Consequently, a statistical assessment is better for determining the precise strength of the relationship.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
Pearson’s correlation measures only linear relationships. Consequently, if your data contain a curvilinear relationship, the correlation coefficient will not detect it.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
What is a good correlation? How high should it be? These are commonly asked questions. I have seen several schemes that attempt to classify correlations as strong, medium, and weak. However, there is only one correct answer. The correlation coefficient should accurately reflect the strength of the relationship. Take a look at the correlation between the height and weight data, 0.705. It’s not a very strong relationship, but it accurately represents our data. An accurate representation is the best-case scenario for using a statistic to describe an entire dataset.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
squared is a primary measure of how well a regression model fits the data. This statistic represents the percentage of variation in one variable that other variables explain. For a pair of variables, R-squared is simply the square of the Pearson’s correlation coefficient. For example, squaring the height-weight correlation coefficient of 0.705 produces an R-squared of 0.497, or 49.7%. In other words, height explains about half the variability of weight in preteen girls.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
values and coefficients are they key regression output. Collectively, these statistics indicate whether the variables are statistically significant and describe the relationships between the independent variables and the dependent variable. Low p-values (typically < 0.05) indicate that the independent variable is statistically significant. Regression analysis is a form of inferential statistics. Consequently, the p-values help determine whether the relationships that you observe in your sample also exist in the larger population. The coefficients for the independent variables represent the average change in the dependent variable given a one-unit change in the independent variable (IV) while controlling the other IVs.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
The low p-values indicate that both education and IQ are statistically significant. The coefficient for IQ (4.796) indicates that each additional IQ point increases your income by an average of approximately $4.80 while controlling everything else in the model. Furthermore, the education coefficient (24.215) indicates that an additional year of education increases average earnings by $24.22 while holding the other variables constant.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
This graph shows all the observations together with a line that represents the fitted relationship. As is traditional, the Y-axis displays the dependent variable, which is weight. The X-axis shows the independent variable, which is height. The line is the fitted line. If you enter the full range of height values that are on the X-axis into the regression equation that the chart displays, you will obtain the line shown on the graph. This line produces a smaller SSE than any other line you can draw through these observations. Visually, we see that that the fitted line has a positive slope that corresponds to the positive correlation we obtained earlier. The line follows the data points, which indicates that the model fits the data. The slope of the line equals the coefficient that I circled. This coefficient indicates how much mean weight tends to increase as we increase height. We can also enter a height value into the equation and obtain a prediction for the mean weight. Each point on the fitted line represents the mean weight for a given height. However, like any mean, there is variability around the mean. Notice how there is a spread of data points around the line. You can assess this variability by picking a spot on the line and observing the range of data points above and below that point. Finally, the vertical distance between each data point and the line is the residual for that observation.
Jim Frost (Regression Analysis: An Intuitive Guide for Using and Interpreting Linear Models)
your tile should have a dynamic coefficient of friction (DCOF) of greater than 0.42; you can find this in the manufacturer’s specifications.
Jamie Gold (Wellness by Design: A Room-by-Room Guide to Optimizing Your Home for Health, Fitness, and Happiness)
The coefficient of variation is a measure of variability that is computed as the ratio between the standard deviation and the mean of a probability distribution. You can think of it as a general measure of the relative breadth of a probability distribution. Since the square of the standard deviation is the variance of a distribution, this means that queues vary linearly with variance, a point worth remembering.
Donald G. Reinertsen (The Principles of Product Development Flow: Second Generation Lean Product Development)
Her briefing had pointed out that the maximum angle that a dune could assume was independent of the local gravity, so this looked like dunes on Earth. The angle depended only on the dirt’s coefficient of friction,
Gregory Benford (Shadows of Eternity)
When basic things get more abundant, it’s the poor who benefit the most. This fact is not captured in Gini coefficients. As such, comparing the impact of changes in TPs over time on different groups of people may be much more informative than using Gini coefficients.
Marian L. Tupy (Superabundance: The Story of Population Growth, Innovation, and Human Flourishing on an Infinitely Bountiful Planet)
His favoured objects of contemplation were economic facts, usually in statistical form. He used to say that his best ideas came to him from ‘messing about with figures and seeing what they must mean’. Yet he was famously sceptical about econometrics – the use of statistical methods for forecasting purposes. He championed the cause of better statistics, not to provide material for the regression coefficient, but for the intuition of the economist to play on.
Robert Skidelsky (Keynes: A Very Short Introduction (Very Short Introductions))
The term ‘inequality’ is a way of framing social problems appropriate to an age of technocratic reformers, who assume from the outset that no real vision of social transformation is even on the table. Debating inequality allows one to tinker with the numbers, argue about Gini coefficients and thresholds of dysfunction, readjust tax regimes or social welfare mechanisms, even shock the public with figures showing just how bad things have become (‘Can you imagine? The richest 1 per cent of the world’s population own 44 per cent of the world’s wealth!’) – but it also allows one to do all this without addressing any of the factors that people actually object to about such ‘unequal’ social arrangements: for instance, that some manage to turn their wealth into power over others; or that other people end up being told their needs are not important, and their lives have no intrinsic worth.
David Graeber (The Dawn of Everything: A New History of Humanity)
It turns out Evite had a built-in viral coefficient—when people send online invitations, the person receiving that invitation may turn around and send invitations to others, and so on. Unbeknownst to Selina (until she kicked the cord), Evite had been growing of its own volition.
Reid Hoffman (Masters of Scale: Surprising Truths from the World's Most Successful Entrepreneurs)
Soon, there were other things that began to trouble Tyler. One type of experiment he and Erika were tasked with doing involved retesting blood samples on the Edisons over and over to measure how much their results varied. The data collected were used to calculate each Edison blood test’s coefficient of variation, or CV. A test is generally considered precise if its CV is less than 10 percent. To Tyler’s dismay, data runs that didn’t achieve low enough CVs were simply discarded and the experiments repeated until the desired number was reached. It was as if you flipped a coin enough times to get ten heads in a row and then declared that the coin always returned heads. Even within the “good” data runs, Tyler and Erika noticed that some values were deemed outliers and deleted. When Erika asked the group’s more senior scientists how they defined an outlier, no one could give her a straight answer. Erika and Tyler might be young and inexperienced, but they both knew that cherry-picking data wasn’t good science
John Carreyrou (Bad Blood: Secrets and Lies in a Silicon Valley Startup)
La physiologie moderne se présente comme un recueil canonique de constantes fonctionnelles en rapport avec des fonctions de régulation hormonales et nerveuses. Ces constantes sont qualifiées de normales en tant qu'elles désignent des caractères moyens et les plus fréquents de cas pratiquement observables. Mais elles sont aussi qualifiées de normales parce qu'elles entrent à titre d'idéal dans cette activité normative qu'est la thérapeutique. Les constantes physiologiques sont donc normales au sens statistique qui est un sens descriptif et au sens thérapeutique qui est un sens normatif. Mais il s'agit de savoir si c'est la médecine qui convertit – et comment ? – en idéaux biologiques des concepts descriptifs et purement théoriques, ou bien si la médecine, en recevant de la physiologie la notion de faits et de coefficients fonctionnels constants, ne recevrait pas aussi, probablement à l'insu des physiologistes, la notion de norme au sens normatif du mot. Et il s'agit de savoir si, ce faisant, la médecine ne reprendrait pas à la physiologie ce qu'elle-même lui a donné.
Georges Canguilhem (The Normal and the Pathological)
No attempt could be made to calibrate these time fuses in hours. They could only be identified with colour bands, which indicated that they should go off within a few hours, a fair number of hours, or a lot of hours. And the situation was complicated by the fact that they had a terrific temperature coefficient. In very hot weather, a theoretically long delay fuse might go off in a few minutes. In very cold weather, it might not go off at all.
Stuart Macrae (Winston Churchill's Toyshop: The Inside Story of Military Intelligence)
In the villages and factories, people from the district committees of the Communist Party travelled around, meeting people. Yet not one of them was capable of giving an answer if they were asked what decontamination was, how children could be protected, or what the coefficients were for radionuclides finding their way into the food chain. Neither could they if asked about alpha, beta and gamma particles, nor about radiobiology, ionizing radiation, let alone isotopes. For them, that was all something from another planet. They gave lectures about the heroism of Soviet people, symbols of military courage, and the wiles of Western intelligence services.
Svetlana Alexievich (Chernobyl Prayer: Voices from Chernobyl (Penguin Modern Classics))
The theorem states that any elliptic curve over Q can be obtained via a rational map with integer coefficients from the classical modular curve (N) for integer N and is a curve with integer coefficients with an explicit definition. If N is the smallest integer for which the parameterization can be sourced, then it may be defined in terms of mapping generated by a particular kind of modular form of weight two and level N! This, of course, is an integer q-expansion, and can be followed by an isogeny. Der! How could you not know that, Charlie?
Peter Patrick (Middle School Super Spy: Space! (Diary Of A Super Spy Book 4))
A study of emissions from US metropolitan areas between 1999 and 2008 found that, contrary to expectations, CO2 emissions scale proportionally with city size, and that larger cities are not metabolically more efficient than smaller ones.38 The scaling coefficient was only 7 percent lower than 1.0—that is, every 1 percent rise in population led to a 0.93 percent rise of emissions.
Vaclav Smil (Size: How It Explains the World)
The Gini coefficient, devised by the Italian sociologist Corrado Gini in 1912, is a measure of income or wealth disparity in a population. It is usually expressed as a fraction between 0 and 1, and it seems easy to understand, because 0 is the coefficient if everyone owned an equal amount, while 1 would obtain if one person owned everything and everyone else nothing.
Kim Stanley Robinson (The Ministry for the Future)
Once we get the regression results, we would calculate a t-statistic, which is the ratio of the observed coefficient to the standard error for that coefficient.* This t-statistic is then evaluated against whatever t-distribution is appropriate for the size of the data sample (since this is largely what determines the number of degrees of freedom). When the t-statistic is sufficiently large, meaning that our observed coefficient is far from what the null hypothesis would predict, we can reject the null hypothesis at some level of statistical significance. Again, this is the same basic process of statistical inference that we have been employing throughout the book. The fewer the degrees of freedom (and therefore the “fatter” the tails of the relevant t-distribution), the higher the t-statistic will have to be in order for us to reject the null hypothesis at some given level of significance. In the hypothetical regression example described above, if we had four degrees of freedom, we would need a t-statistic of at least 2.13 to reject the null hypothesis at the .05 level (in a one-tailed test). However, if we have 20,000 degrees of freedom (which essentially allows us to use the normal distribution), we would need only a t-statistic of 1.65 to reject the null hypothesis at the .05 level in the same one-tailed test.
Charles Wheelan (Naked Statistics: Stripping the Dread from the Data)
Speech, akin to friction, impedes success's mission. More gossip, more coefficient, a hindered rendition.
Santiago Afanador
PWR is inherently stable with a strongly negative void coefficient. Any significant boiling in your PWR rapidly reduces reactor power, rather than increasing it.
Colin Tucker (How to Drive a Nuclear Reactor (Springer Praxis Books))
Like the other engines of growth, the viral engine is powered by a feedback loop that can be quantified. It is called the viral loop, and its speed is determined by a single mathematical term called the viral coefficient. The higher this coefficient is, the faster the product will spread. The viral coefficient measures how many new customers will use a product as a consequence of each new customer who signs
Eric Ries (The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses)