X

Posts

October 30, 2014

+
12:04 AM | Sensing and Acting Under Information Constraints
I’m having a great time at a workshop on Biological and Bio-Inspired Information Theory in Banff, Canada. You can see videos of the talks online. There have been lots of good talks so far, but this one really blew my mind: • Naftali Tishby, Sensing and acting under information constraints—a principled approach to biology and […]
Editor's Pick

October 29, 2014

+
10:52 PM | Your Password
Your password must contain a pound of flesh. No blood, nor less nor more, but just a pound of flesh. Your password must contain all passwords which do not contain themselves. Your password must contain any letter of the alphabet save the second. NOT THE BEES! NOT THE BEES! Your password must contain a reminder […]
+
8:50 PM | Recueil de modèles stochastiques
J’ai l’immense joie ce soir de terminer la mise au point de la version préliminaire du livre intitulé «Recueil de modèles stochastiques », écrit en collaboration avec mon vieil ami Florent Malrieu. Voici un extrait de l’avant-propos: Ce recueil de modèles stochastiques puise sa source dans les cours de Master de ma- thématiques et de […]
+
5:15 PM | SQMC read paper
Almost 10 months since my latest post? I guess bloggin’ ain’t my thing… In my defense, Mathieu Gerber and I were quite busy revising our SQMC paper. I am happy to announce that it has just been accepted as a read paper in JRSSB. If all goes as planned, we should present the paper at  […]
+
4:56 PM | Mark says smart stuff
This is JosephIn the context of a recent post by Mark Palko:Both the tech and financial sector have embraced the idea that economic rewards are directly correlated to work and worth. It's a strange mixture of efficient market theorem and social Darwinism, often with more than a bit of Randianism. I found both of these arguments for increased taxation of high income earners interesting.   First:Because rich people spend their money on useless stuff. Not far from where I live, there is […]
+
4:55 PM | Making screencasts: The pedagogical framework
I was recently asked to contribute some short videos to a MOOC on Evidence-Based Undergraduate STEM Teaching on my use of lecture and screencasts as part of the flipped classroom. Here's that video.
+
12:30 PM | This is the perfect October clip
At least for a snarky epidemiology blog...
+
10:58 AM | Core Econ: an open source economics textbook
Today I want to tell you guys about core-econ.org, an open textbook my buddy Suresh Naidu is using this semester to teach out of and is also contributing to, along with a bunch of other economists. It’s super cool, and I wish a class like that had been available when I was an undergrad. In […]
+
2:57 AM | Body-slam on the sister blog
John Ahlquist and Scott Gehlbach nail it. The post Body-slam on the sister blog appeared first on Statistical Modeling, Causal Inference, and Social Science.
+
1:15 AM | Home Insulation Math
Introduction One of the engineers in my group asked if I could help him understand the tradeoffs between the different kinds of house insulation and their relative economic value. We also spent quite a bit of time talking about where … Continue reading →
+
12:34 AM | Graphs that make me nervous
A couple of quick caveats: I am never entirely comfortable focusing too much on "additional years of learning" -- it's a problematic metric -- and the link to the original report seems to be dead.The good folks at Vox are very excited by the results of this recent experiment in merit pay. Perhaps I'm missing something obvious, but that jump between 2010 and 2009 seems really big.Does this look odd to anyone else?

October 28, 2014

+
10:57 PM | Conditional Restricted Isometries
We have finally made (conditional) progress on the Paley ETF conjecture! Joel, Dustin, and I just uploaded our paper “A conditional construction of restricted isometries” to the arxiv. The conjecture states that a particularly simple deterministic construction, the Paley ETF (see below), satisfies the restricted isometry property past the squareroot bottleneck, we were able to […]
+
10:54 PM | Adventures with the Treasury and the Fed
Last year, my wife and I put on an event to recognize the success of a fast-growing division of the Hunt Companies.  The event was held at the Boettcher Mansion on Lookout Mountain outside Denver.  Corrina, a sommelier and chef, … Continue reading →
+
4:00 PM | Would renewables still be a good idea if fossil fuels didn’t have negative environmental consequences?
Given the push toward renewable energy that is happening these days, it’s natural for folks to start to demonize fossil fuels like coal, gas, etc.  I think this is a shame.  Cheap energy is a really great thing — and fossil fuels are really good at providing this. I’ve posted before about how important energy […]
+
3:58 PM | Stimulated emission of radiation at high frequencies
References: Griffiths, David J. (2005), Introduction to Quantum Mechanics, 2nd Edition; Pearson Education – Section 9.2; Problem 9.21a. In our treatment of stimulated emission of radiation, we assumed that the wavelength of the perturbing radiation was much greater than the size of the atom. For high frequency radiation, such as X-rays, this assumption is no […]
+
1:46 PM | Yes, I’ll help people for free but not like this!
I received the following (unsolicited) email: Dear Sir or Madam, My name is **; I am a graduate student, working on my thesis in **. A vital part of my research is performing a joint cluster analysis of attributional and relational data on **. I have tried to collaborate with the statisticians at ** and […] The post Yes, I’ll help people for free but not like this! appeared first on Statistical Modeling, Causal Inference, and Social Science.
+
1:30 PM | Yes, a Surgeon General would come in handy right about now
For me, one of the most interesting stories in politics these days is the way that information has come to flow in the the conservative movement. And sometimes the most interesting part of that story is the way information fails to flow.Rep. Jason Chaffetz (R-Utah) says Ron Klain is "off to a bad start" in his new role as the president's Ebola response coordinator, and that the U.S. Surgeon General should be the one leading the effort. But what Chaffetz doesn't seem to realize is that there […]
+
1:00 PM | "—We Also Walk Dogs"
I've been going through some old posts on incentive pay and they got me thinking about how education reformers, fresh water economists and libertarians often fall back on a strongly linear model. That, in turn, got me thinking about a Heinlein story I read years ago.From Wikipedia:"—We Also Walk Dogs" is a science fiction short story by Robert A. Heinlein. One of his Future History stories, it was first published in Astounding Science Fiction (July 1941 as by Anson MacDonald)....'General […]
+
11:35 AM | Non-linear Causal Inference using Gaussianity Measures - implementation -
Rewatching Leon Bottou's talk yesterday, I was reminded of David Lopez-Paz's paper on the subject that I had not mentioned before. I wonder if this work could not be helped with some of the tool developed in advanced matrix/tensor factorization:Non-linear Causal Inference using Gaussianity Measures by Daniel Hernandez-Lobato, Pablo Morales Mombiela, David Lopez-Paz and Alberto SuarezIn this paper we provide theoretical and empirical evidence of a type of asymmetry between causes and effects […]
+
11:15 AM | The war against taxes (and the unmarried)
The American Enterprise Institute, conservative think-tank, is releasing a report today. It’s called For richer, for poorer: How family structures economic success in America (I will add a link when I can find it online), and there is also an event in DC today from 9:30am til 12:15pm that will be livestreamed. The report takes a look […]
+
10:57 AM | Blue Bonnet Bayes
Blue Bonnet™ used to run commercials with the jingle “Everything’s better with Blue Bonnet on it.” Maybe they still do. Perhaps in reaction to knee-jerk antipathy toward Bayesian methods, some statisticians have adopted knee-jerk enthusiasm for Bayesian methods. Everything’s better with Bayesian analysis on it. Bayes makes it better, like a little dab of margarine […]
+
9:41 AM | CSJob : OCE Postdoctoral Fellow - Real-time 2D compressive Hyperspectral Imaging, Brisbane, Australia
Mingrui just sent me the following postdoc opportunity in Brisbane, Australia:  Dear Dr. Carron, Could you please advertise the follow postdoc position on your blog? http://goo.gl/XiRt60Thanks, Mingrui ------------------------------------------------------------------ Mingrui Yang Autonomous Systems Laboratory CSIRO Digital Productivity Queensland Centre for Advanced Technologies (QCAT) 1 Technology Court, Pullenvale QLD 4069, AustraliaThanks Mingrui, here it is:  […]
+
4:41 AM | And sometimes they don’t spam you at all
I received the following email: Dear Dr. Gelman, As a way of introduction, my name is . . . and I am very interested in studying in Columbia’s PhD statistics program. For the past 2 ½ years, I’ve worked as an analyst for . . . I am writing to communicate my interest in your […] The post And sometimes they don’t spam you at all appeared first on Statistical Modeling, Causal Inference, and Social Science.

October 27, 2014

+
9:56 PM | Biodiversity, Entropy and Thermodynamics
  I’m giving a short 30-minute talk at a workshop on Biological and Bio-Inspired Information Theory at the Banff International Research Institute. I’ll say more about the workshop later, but here’s my talk: • Biodiversity, entropy and thermodynamics. Most of the people at this workshop study neurobiology and cell signalling, not evolutionary game theory or […]
+
7:52 PM | ACM EC 2015 Call for Papers
The 16th ACM Conference on Economics and Computation (EC 2015) will be held on June 15-19, as part of FCRC 2015, in Portland, Oregon. The Call for Papers is now out. As in previous years, to accommodate the publishing traditions of different fields (i.e., subsequent publications in Econ/other journals), authors of accepted papers are allowed […]
+
4:25 PM | Stimulated emission of radiation: lasers
References: Griffiths, David J. (2005), Introduction to Quantum Mechanics, 2nd Edition; Pearson Education – Section 9.2; Problem 9.19. A particularly important case that we can analyze using time-dependent perturbation theory is that of the perturbation of an atom by an electromagnetic wave. A proper quantum treatment of the problem requires, of course, a proper quantum […]
+
4:23 PM | Optimization and college enrollments
This is Joseph.Dean Dad had a great post a while back on trying to improve classroom scheduling.  In it, he had a great example of the perils of overfitting.  The context is that the Gates Foundation had suggested that a more efficient algorithm for classroom management could improve costs.  The problem is that they aren't testing this in prospective environments -- leading to some issues:Finally, and I can’t stress this enough, enrollment is a moving target.  […]
+
3:30 PM | Videos: MMDS 2014: Workshop on Algorithms for Modern Massive Data Sets
Andrew Clegg is responsible for me finding out that the videos of MMDS 2014: Workshop on Algorithms for Modern Massive Data Sets are out and they are all on the MMDS channel. All the slides are here. I have listed the videos here (and corrected at least one title).  Leon Bottou's talk (on the same topic he presented in Season 1 of the Paris Machine Learning Meetup)  Content-based search in 50TB of consumer-produced videos Gerald Friedland Influence sampling for generalized linear […]
+
3:02 PM | 2 on chess
Is it really “often easier to win a rematch than to defend a championship”? The quoted bit above comes from Tyler Cowen, writing about the Anand/Carlsen world championship rematch. I’m still not used to the idea of a new world championship match every year but I guess why not? Anyway, here’s my question. Tyler Cowen […] The post 2 on chess appeared first on Statistical Modeling, Causal Inference, and Social Science.
+
1:24 PM | Guest post: NYC Taxi Wait Times
This is a guest post by Deepak Subburam, a data scientist who works at Tessellate. Greetings fellow Mathbabers! At Cathy’s invitation, I am writing here about NYCTaxi.info, a public service web app my co-founder and I have developed. It overlays on a Google map around you estimated taxi activity, as expected number of passenger pickups […]
123456789
9,908 Results