Posts

July 09, 2014

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10:51 AM | Great news: for-profit college Corinthian to close
I’ve talked before about the industry of for-profit colleges which exists largely to game the federal student loan program. They survive almost entirely on federal student loans of their students, while delivering terrible services and worthless credentials. Well, good news: one of the worst of the bunch is closing its doors. Corinthian College, Inc (CCI) got caught lying […]

July 08, 2014

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10:14 PM | thick disc formation scenario of the Milky Way evaluated by ABC
“The facts that the thick-disc episode lasted for several billion years, that a contraction is observed during the collapse phase, and that the main thick disc has a constant scale height with no flare argue against the formation of the thick disc through radial migration. The most probable scenario for the thick disc is that […]
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7:34 PM | Hilbert’s fifth problem and approximate groups
Due to some requests, I’m uploading to my blog the slides for my recent talk in Segovia (for the birthday conference of Michael Cowling) on “Hilbert’s fifth problem and approximate groups“.  The slides cover essentially the same range of topics in this series of lecture notes, or in this text of mine, though of course […]
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1:02 PM | Just wondering
It would be bad news if a student in the class of Laurence Tribe or Alan Dershowitz or Ian Ayres or Edward Wegman or Matthew Whitaker or Karl Weick or Frank Fischer were to hand in an assignment that is obviously plagiarized copied from another source without attribution. Would the prof have the chutzpah to […] The post Just wondering appeared first on Statistical Modeling, Causal Inference, and Social Science.
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12:00 PM | Medical terminology Twitter account
Learn basic medical vocabulary a little at a time by following my new account @MedVocab on Twitter. See the full list of my daily tip Twitter accounts here. The icon for the site is taken from one of Leonardo da Vinci’s anatomical drawings.
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11:25 AM | Zephyr Teachout to visit Alt Banking this Sunday
I’m excited to announce that Zephyr Teachout, a Fordham Law School professor who is running against Andrew Cuomo for Governor of New York, will be coming to speak to the Alternative Banking group next Sunday, July 13th, from 3pm-5pm in the usual place, Room 409 of the International Affairs Building at 118th and Amsterdam. More about […]
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9:24 AM | Shen: Foundations of probability theory and Kolmogorov complexity
Alexander Shen, Основания теории вероятностей и колмогоровская сложность. (Foundations of probability theory and Kolmogorov complexity).
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7:09 AM | Calling a spade a spade
Calling a spade a spade: Mathematics in the new pattern of division of labour Abstract The growing disconnection of the majority of population from mathematics is becoming a phenomenon that is increasingly difficult to ignore. This paper attempts to point to deeper roots of this cultural and social phenomenon. It concentrates on mathematics education, as […]
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5:10 AM | Flip-Flops and the Art of Computer Memory
Flip-Flops and the Art of Computer Memory It’s a poor sort of memory that only works backwards. ~The White Queen to Alice (Lewis Carroll, Through the Looking Glass) This is the fifth part in my multi-part series on how computers work. Computers are thinking machines, and the … Continue reading → The post Flip-Flops and the Art of Computer Memory appeared first on The Physics Mill.
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12:54 AM | The Categorical Origins of Lebesgue Integration
A simple universal property characterizing the space L^1 of Lebesgue-integrable functions.

July 07, 2014

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10:14 PM | posterior predictive checks for admixture models
In a posting coincidence, just a few days after we arXived our paper on ABC model choice with random forests, where we use posterior predictive errors for assessing the variability of the random forest procedure, David Mimno, David Blei, and Barbara Engelhardt arXived a paper on posterior predictive checks to quantify lack-of-fit in admixture models […]
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8:38 PM | Visiting Stuttgart
This post is mostly a tourist-traveling post, so you might be surprised to see this on a math-blog. But I thought that this is better to introduce you to my week in Stuttgart, also another post will be about the … Continue reading →
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3:37 PM | “Bayes Data Analysis – Author Needed”
The following item came in over the Bayes email list: Hi, My name is Jo Fitzpatrick and I work as an Acquisition Editor for Packt Publishing ( www.packtpub.com ). We recently commissioned a book on Bayesian Data Analysis and I’m currently searching for an author to write this book. You need to have good working […] The post “Bayes Data Analysis – Author Needed” appeared first on Statistical Modeling, Causal Inference, and Social Science.
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3:05 PM | A puzzle puzzle
Jigsaw puzzles that say they have 1,000 pieces have approximately 1,000 pieces, but probably not exactly 1,000. Jigsaw puzzle pieces are typically arranged in a grid, so the number of pieces along a side has to be a divisor of the total number of pieces. This means there aren’t very many ways to make a […]
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1:24 PM | What constitutes evidence?
My most recent Slate Money podcast with Felix Salmon and Jordan Weissmann was more than usually combative. I mean, we pretty much always have disagreements, but Friday it went beyond the usual political angles. Specifically, Felix thought I was jumping too quickly towards a dystopian future with regards to medical data. My claim was that, […]
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1:00 PM | On deck this week
Mon: “Bayes Data Analysis – Author Needed” Tues: Just wondering Wed: “P.S. Is anyone working on hierarchical survival models?” Thurs: Open-source tools for running online field experiments Fri: Hey—this is a new kind of spam! Sat, Sun: As Chris Hedges would say: That’s the news, and I am outta here! The post On deck this week appeared first on Statistical Modeling, Causal Inference, and Social Science.
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10:20 AM | The subspace theorem approach to Siegel’s theorem on integral points on curves via nonstandard analysis
Let be the algebraic closure of , that is to say the field of algebraic numbers. We fix an embedding of into , giving rise to a complex absolute value for algebraic numbers . Let be of degree , so that is irrational. A classical theorem of Liouville gives the quantitative bound for the irrationality […]

July 06, 2014

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10:57 PM | Sugar CuBes
First of all, my week in Stuttgart is over and I am back home with a lot of new things to share with you. Bare with me because I need a lot of time to prepare the posts about this … Continue reading →
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10:35 PM | Hey, what’s that book you’re not reading?
In the Wall Street Journal this weekend I define a new metric aimed at identifying books people are buying but not reading. How can we find today’s greatest non-reads? Amazon’s “Popular Highlights” feature provides one quick and dirty measure. Every book’s Kindle page lists the five passages most highlighted by readers. If every reader is […]
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10:14 PM | ABC [almost] in the front news
My friend and Warwick colleague Gareth Roberts just published a paper in Nature with Ellen Brooks-Pollock and Matt Keeling from the University of Warwick on the modelling of bovine tuberculosis dynamics in Britain and on the impact of control measures. The data comes from the Cattle Tracing System and the VetNet national testing database. The mathematical […]
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7:14 PM | I hate bad buts and I cannot lie
From today’s New York Times: Scarlett Johansson gainfully posed in underwear and spiked heels for Esquire’s cover last year after the magazine named her the “sexiest woman alive.” But a French novelist’s fictional depiction of a look-alike so angered the film star that she sued the best-selling author for defamation. The inappropriate “but” is one of the […]
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5:41 PM | Ellipsoid surface area
How much difference does the earth’s equatorial bulge make in its surface area? To first approximation, the earth is a sphere. The next step in sophistication is to model the earth as an ellipsoid. The surface area of an ellipsoid with semi-axes a ≥ b ≥ c is where and The functions E and F […]
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2:57 PM | Mesons produced in a bubble chamber
by @ulaulaman about #mesons #bubblechamber #CERN #particles #physics A bubble chamber is a pool filled with a liquid (typically hydrogen) such that its molecules are ionized to the passage of a charged particle, thus producing bubbles. In this way the trajectories of the particles are visible and it is possible to study the various decays(2).The bubble chamber was invented by Donald Glaser(1) in 1952, who win the Nobel Prize in 1960. (1) Glaser, D. (1952). Some Effects of Ionizing Radiation on […]
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11:46 AM | Sintetico, poetico, conciso e folgorante
di Pier Carpi e Marco Rostagno da Horror 17
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6:06 AM | Black Phoebe
For the past month or so, until this weekend when they moved out, we've had some squatters on our front porch: a family of Black Phoebes. They conveniently set up their nest in clear sight of a window over the front door, through which I could aim the camera.

July 05, 2014

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10:14 PM | how to translate evidence into French?
I got this email from Gauvain who writes a PhD in philosophy of sciences a few minutes ago: L’auteur du texte que j’ai à traduire désigne les facteurs de Bayes comme une “Bayesian measure of evidence”, et les tests de p-value comme une “frequentist measure of evidence”. Je me demandais s’il existait une traduction française […]
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3:24 PM | Published on…
Today I have been mildly irritated by numerous tweets announcing the 5th July 1687, as the day on which Isaac Newton’s Principia was published, why? Partially because the claim is not strictly true and partially because it evokes a false … Continue reading →
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2:36 PM | Il pittore che visse due volte
La struttura è abbastanza tipica (forse addirittura abusata, almeno secondo alcuni commenti letti in giro sul web), però Chris Paling riesce comunque a utilizzarla bene: ovvero raccontare la vicenda in parallelo tra passato, inizio XX secolo, e presente, inizio XXI secolo.Nel passato seguiamo le vicende di T.F. Reilly, giovane e talentuoso pittore londinese, probabilmente dallo stile impressionista, almeno se teniamo fede alle descrizioni dei quadri che ne fa Paling, in […]
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1:31 PM | Visualizing sampling error and dynamic graphics
Robert Grant writes: What do you think of this visualisation from the NYT [in an article by Neil Irwin and Kevin Quealy but I'm not sure if they're the designers of the visualization]? I’m pretty impressed as a method of showing sampling error to a general audience! I agree. P.S. In related news, Antony Unwin […] The post Visualizing sampling error and dynamic graphics appeared first on Statistical Modeling, Causal Inference, and Social Science.
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1:00 PM | Grand Opening: The Stan Shop
I finally put together a shop so everyone can order Stan t-shirts and mugs: The Stan Shop The art’s by Michael Malecki. The t-shirts and mugs are printed on demand by Spreadshirt. I tried out a sample and the results are great and have held up to machine washing and drying. There’s a markup of […] The post Grand Opening: The Stan Shop appeared first on Statistical Modeling, Causal Inference, and Social Science.
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