Kevin Van Horn
29 followers
29 followers
Kevin Van Horn's posts
Post has attachment
Public
http://lesswrong.com/r/discussion/lw/p7v/bayesian_probability_theory_as_extended_logic_a/
A quick overview of a recent paper of mine that gives an alternative to Cox's Theorem... and resurrects the classical definition of probability as a theorem.
A quick overview of a recent paper of mine that gives an alternative to Cox's Theorem... and resurrects the classical definition of probability as a theorem.
Post has attachment
It's All About Jensen's Inequality
A recent paper proves something that runners have long suspected: GPS overestimates the distance you have traveled. This isn’t due to any algorithmic error; it is instead an unavoidable consequence of two facts: The position measurements that GPS makes…
A recent paper proves something that runners have long suspected: GPS overestimates the distance you have traveled. This isn’t due to any algorithmic error; it is instead an unavoidable consequence of two facts: The position measurements that GPS makes…
Post has attachment
(PDF) Introduction A generalized linear model for binary response data has the form where is the 0/1 response variable, is the -vector of predictor variables, is the vector of regression coefficients, and is the link function. In the Stan modeling…
Post has attachment
(PDF) The puzzle Scott Aaronson has a wonderful book called Quantum Computing Since Democritus, and in his chapter on the anthropic principle he writes about a thought experiment (attributed to John Leslie) that he calls the Dice Room: Imagine that…
Post has attachment
A Symmetric Effects Prior
Short story: Given a -level nominal input variable in a Bayesian regression model, let be the effect of level . To achieve a symmetric prior on the effects, with a prior mean of 0 and prior covariance of for each , the prior on the vector of regression…
Short story: Given a -level nominal input variable in a Bayesian regression model, let be the effect of level . To achieve a symmetric prior on the effects, with a prior mean of 0 and prior covariance of for each , the prior on the vector of regression…
Post has attachment
Public
Probability Theory Does Not Extend Logic?
David Chapman has an essay entitled Probability Theory Does Not Extend Logic. A friend asked me about it, and I wrote up my response here.
David Chapman has an essay entitled Probability Theory Does Not Extend Logic. A friend asked me about it, and I wrote up my response here.
Post has attachment
Analysis of a Nootropics Survey
The Problem Scott Alexander’s blog Slate Star Codex recently carried the results of a survey of over 850 users of nootropics (cognitive enhancers) such as caffeine, Adderall, and Modafinil. The survey asked respondents to subjectively rate each substance…
The Problem Scott Alexander’s blog Slate Star Codex recently carried the results of a survey of over 850 users of nootropics (cognitive enhancers) such as caffeine, Adderall, and Modafinil. The survey asked respondents to subjectively rate each substance…
Post has attachment
Doomsday and the Dice Room Murders
(PDF) The puzzle Scott Aaronson has a wonderful book called Quantum Computing Since Democritus (1), and in his chapter on the anthropic principle he writes about a thought experiment (attributed to John Leslie) that he calls the Dice Room: Imagine that…
(PDF) The puzzle Scott Aaronson has a wonderful book called Quantum Computing Since Democritus (1), and in his chapter on the anthropic principle he writes about a thought experiment (attributed to John Leslie) that he calls the Dice Room: Imagine that…
Post has attachment
Implementing the Symmetric Effects Prior
(The full write-up is here.) In a previous note I proposed a prior on the regression coefficients for a nominal input variable that leads to a symmetric prior on the effects: where is the vector of regression coefficients, is the number of levels, and are…
(The full write-up is here.) In a previous note I proposed a prior on the regression coefficients for a nominal input variable that leads to a symmetric prior on the effects: where is the vector of regression coefficients, is the number of levels, and are…
Post has attachment
Which is Worse: Calling Someone Thin-skinned or Wishing Them Dead?
Jo Brand is a British comedian. Her repertoire of jokes includes this gem: The way to a man’s heart is through his hanky pocket with a breadknife. This quip of hers is widely repeated on the Internet, as an example of her (ahem) sharp wit. More recently,…
Jo Brand is a British comedian. Her repertoire of jokes includes this gem: The way to a man’s heart is through his hanky pocket with a breadknife. This quip of hers is widely repeated on the Internet, as an example of her (ahem) sharp wit. More recently,…
Wait while more posts are being loaded