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Tag Archives: metrics
the Charles Dickens gift metric
If Charles Dickens were alive today, he would rather receive £20 from a waiter friend than £100 from a banker friend, because it means more coming from the poor man. £20 is a larger fraction of the poor man’s income, so it … Continue reading
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Tagged Christmas, culture, economics, giftgiving, gifts, giving, love, metrics, money, other, ritual, Saturnalia, self, self versus other, self vs. other
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[T]he point of introducing L^p spaces in the first place is … to exploit … Banach space. For instance, if one has ƒ − g = 0, one would like to conclude that ƒ = g. But because of the … Continue reading
Talking in Tuples
Mathematics is the *Most* Different Language. In Can we make mathematics intelligible?, R P Boas jokes: There is a test for identifying some of the future professional mathematicians at an early age. These are the students who instantly comprehend a sentence … Continue reading
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Tagged Chinese, clarity, comprehension, definitions, English, function, functions, group theory, intelligibility, inverse mapping, inversion, language, Mandarin, math, mathematics, maths, measures, metrics, operation, operator, order theory, ordering, partially ordered set, poset, Ralph Philip Boas Jr., reading, relation, set, set theory, Tagalog
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Average Wages by US County, 1Q2011
When people pontificate about national politics, I find the dialogue too generalistic. “Technology X will create green jobs”. “Wall Street is making more than Main Street.” “The United States needs to invest more money in high tech. Routine production is … Continue reading
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Tagged alternative measures, basic facts, basic_facts, bureau of labor statistics, data, debate, different measures, earnings, economics, facts, Indiana, Kentucky, Louisville, metrics, money, Monroe County, occupy wall street, politics, priming, psychological priming, psychology, states, statistics, sub i sub j, thought, unemployment, wages, wealth, Wisconsin
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Manifolds, Star Fox, and SelfversusOther
Branes, Dbranes, Mtheory, Ktheory … news articles about theoretical physics often mention “manifolds”. Manifolds are also good tools for theoretical psychology and economics. Thinking about manifolds is guaranteed to make you sexy and interesting. Fortunately, these fancy surfaces are already … Continue reading
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Tagged Albert Einstein, distance, economics, Euclidean norm, flast, general relativity, manifolds, math, mathematics, maths, metrics, norms, other, perspectives, psychology, quasimetrics, race, racism, Rene Descartes, self, Sir Isaac Newton, spacetime
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Movie Ratings
Another unmeasurable distance is ★★★ movie ratings. Movie ratings are drawn from the set {★,★★,★★★,★★★★,★★★★★} and related by the total ordering >: ★★★★★ > ★★★★ ★★★★ > ★★★ ★★★ > ★★ ★★ > ★ and the transitivity of > gives … Continue reading
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Tagged abstract algebra, Amos Tversky, distances, film, isomorphism, math, mathematics, maths, metric spaces, metrics, movies, Netflix, recommendation engines, topology
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The Hotness Scale
One example of a total ordering ≤ is the “hotness” scale from 1–10. Because of the widespread disagreement about the meaning of the numbers, the only thing one can infer based on a man’s rating of a woman is that … Continue reading
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Tagged attraction, boys, comparable, distance, geometry, girls, hotness, LGBTQ, liking, math, mathematics, maths, measures, metric, metric spaces, metrics, norm, norms, partially ordered set, partially ordered sets, poset, posets, quantification, sex, sex appeal, sexiness, size
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