July 20, 2014

6:20 PM | Gallo Zinfandel
Filed under: Kids, Wines Tagged: California, Californian wine, Gallo vineyards, zinfandel
2:38 PM | Passeggiata lunare
(via todaysdocument, Stepping Stones to the Moon)
2:10 PM | The Place of Diversity in Pure Mathematics
Diversity is a canonical concept of pure mathematics.
1:33 PM | On deck for the rest of the summer
Skepticism about a published claim regarding income inequality and happiness Battle of the cozy comedians: What’s Alan Bennett’s problem with Stewart Lee? A world without statistics NFL players keep getting bigger and bigger “An Experience with a Registered Replication Project” A linguist has a question about sampling when the goal is causal inference from observational […] The post On deck for the rest of the summer appeared first on Statistical Modeling, Causal […]
12:57 PM | Mathematics: The Most Misunderstood Subject
A post by  Robert Lewis. Much recommended.
12:48 PM | How quantum mechanics explains global warming
posted by @ulaulaman about #globalwarming The physician Mark Schleupner, a Ronaoke native, writes about global warming: So, according to NASA scientists, if all the ice in 14 million sq km Antarctica melts, sea levels will rise more than 200 feet. Greenland alone has another huge chunk of the Earth’s water tied up in ice; some scientists say that its ice sheet has passed a tipping point and will be gone in the next centuries, raising ocean levels by 24 feet. These […]

July 19, 2014

10:14 PM | do and [mostly] don’t…
Rather than staying in one of the conference hotels, I followed my habit of renting a flat by finding a nice studio in Cancún via airbnb. Fine except for having no internet connection. (The rental description mentioned “Wifi in the lobby”, which I stupidly interpreted as “lobby of the appartment”, but actually meant “lobby of […]
5:15 PM | Mini-monomath
The title of this post is a nod to Terry Tao’s four mini-polymath discussions, in which IMO questions were solved collaboratively online. As the beginning of what I hope will be a long exercise in gathering data about how humans solve these kinds of problems, I decided to have a go at one of this […]
2:50 PM | Tre ombre
Non ricordo più per quale motivo la recensione non è arrivata su LSB con il suo iter regolare, ma avendola ritrovata, la recupero per DropSea:Le favole hanno da sempre il potere di veicolare in maniera semplice ma diretta alcuni messaggi importanti: non dare confidenza agli sconosciuti, stare attenti ai pericoli della vita. A volte, però, la vita è piena di eventi per noi incontrollabili e le favole possono aiutare a sopportarli. In un certo senso è quello che […]
11:33 AM | The Ten-Fold Way
Learn a bit about the ten-fold way!

July 18, 2014

10:14 PM | Cancun, ISBA 2014 [½ day #2]
Half-day #2 indeed at ISBA 2014, as the Wednesday afternoon kept to the Valencia tradition of free time, and potential cultural excursions, so there were only talks in the morning. And still the core poster session at (late) night. In which my student Kaniav Kamari presented a poster on a current project we are running […]
8:15 PM | Dimostrazioni senza parole: differenze tra cubi
\[(n+1)^3 - n^3 \equiv 1 \mod 6\] Claudi Alsina,, Roger Nelsen,, & Hasan Unal (2014). Proof Without Words: The Difference of Consecutive Integer Cubes Is Congruent to 1 Modulo 6 The College Mathematics Journal, 45 (2), 135-135 DOI: 10.4169/college.math.j.45.2.135 (facebook)

Claudi Alsina,, Roger Nelsen, & Hasan Unal (2014). Proof Without Words: The Difference of Consecutive Integer Cubes Is Congruent to 1 Modulo 6, The College Mathematics Journal, 45 (2) 135-135. DOI: 10.4169/college.math.j.45.2.135

1:15 PM | The platonic solids
I managed to record this week’s Slate Money podcast early so I could drive up to HCSSiM for July 17th, and the Yellow Pig Day celebration. I missed the 17 talk but made it in time for yellow pig carols and cake. This morning my buddy Aaron decided to let me talk to the kids […]
1:03 PM | Differences between econometrics and statistics: From varying treatment effects to utilities, economists seem to like models that are fixed in stone, while statisticians tend to be more comfortable with variation
I had an interesting discussion with Peter Dorman (whose work on assessing the value of a life we discussed in this space a few years ago). The conversation started when Peter wrote me about his recent success using hierarchical modeling for risk analysis. He wrote, “Where have they [hierarchical models] been all my life? In […] The post Differences between econometrics and statistics: From varying treatment effects to utilities, economists seem to like models that are fixed in […]

July 17, 2014

10:14 PM | Cancún, ISBA 2014 [day #1]
The first full day of talks at ISBA 2014, Cancún, was full of goodies, from the three early talks on specifically developed software, including one by Daniel Lee on STAN that completed the one given by Bob Carpenter a few weeks ago in Paris (which gives me the opportunity to advertise STAN tee-shirts!). To the […]
10:14 PM | ABC in Sydney [guest post]
[Scott Sisson sent me this summary of the ABC in Sydney meeting that took place two weeks ago.] Following on from ABC in Paris (2009), ABC in London (2011) and ABC in Rome (2013), the fourth instalment of the international workshops in Approximate Bayesian Computation (ABC) was held at UNSW in Sydney on 3rd-4th July […]
4:32 PM | Matematica automobilistica: curve di Bézier e metodo della continuazione
E' interessante osservare come fino a una trentina di anni fa almeno l'industria automobilistica, almeno quella non italiana, aveva nella matematica una delle linee di ricerca fondamentali. In particolare ci sono due esempi cui sono incappato recentemente, le curve di Bézier e il metodo della continuazione.Iniziamo con le prime: le curve di Bézier sono delle particolari curve parametriche sviluppate dall'ingegnere Pierre Bézier per la Renault da utilizzare per il design […]
1:36 PM | Ethics and statistics
I spoke (remotely) recently at the University of Wisconsin, on the topic of ethics and statistics. Afterward, I received the following question from Fabrizzio Sanchez: As hard as it is to do, I thought it was good to try and define what exactly makes for an ethical violation. Your third point noted that it needed […] The post Ethics and statistics appeared first on Statistical Modeling, Causal Inference, and Social Science.
10:53 AM | The future of work
People who celebrate the monthly jobs report getting better nowadays often forget to mention a few facts: the new jobs are often temporary or part-time, with low wages the old lost jobs, which we lose each month, were often full-time with higher wages I could go on, and I have, and mention the usual complaints about the definition […]

July 16, 2014

10:38 PM | Cancún, ISBA 2014 [day #0]
Day zero at ISBA 2014! The relentless heat outside (making running an ordeal, even at 5:30am…) made the (air-conditioned) conference centre the more attractive. Jean-Michel Marin and I had a great morning teaching our ABC short course and we do hope the ABC class audience had one as well. Teaching in pair is much more […]
8:54 PM | Compile R and OpenBLAS from Source Guide
1. Get OpenBLAS 2.1 Get R 2.2 Specific Instructions for DSS Users 3. Validation 4. Benchmark This guide is intended to aid any R and Linux user who desires a threaded version of BLAS. In particular I hope this will allow other grad students, who like me do not have many user privileges on their […] The post Compile R and OpenBLAS from Source Guide appeared first on Lindons Log.
4:11 PM | Mathematicians discuss the Snowden revelations
In the last period I cannot read the Notices of AMS, so I lost the most recent discussion on this journal about the revelations made by Edward Snowden about NSA. Thanks to the n-category Café I recover the letters about this topic: In the first part of 2013, Edward Snowden, a former contractor for the National Security Agency (NSA), handed over to journalists a trove of secret NSA documents. First described in the media in June 2013, these documents revealed extensive spying programs of […]
3:05 PM | Minimalia: istantanee da una camera a bolle
La settimana scorsa, su twitter, ho diffuso alcune immagini, foto scattate dalle pagine dal volume Letture da Le Scienze: Fisica delle particelle (un indice del volume), che raccoglieva alcuni articoli usciti sulla rivista italiana (e quindi anche su Scientific American). Poiché ognuna di quelle immagini fa inevitabilmente parte della storia della fisica, mi sembra sensato proporle raccolte insieme in un unico post molto più semplicemente raggiungibile di tanti piccoli... […]

Weisskopf, V. (1968). The Three Spectroscopies, Scientific American, 218 (5) 15-29. DOI: 10.1038/scientificamerican0568-15

Barish, B. (1973). Experiments with Neutrino Beams, Scientific American, 229 (2) 30-38. DOI: 10.1038/scientificamerican0873-30

Treiman, S. (1959). The Weak Interactions, Scientific American, 200 (3) 72-84. DOI: 10.1038/scientificamerican0359-72

Cline D.B., Mann A.K. & Rubbia C. (1974). The Detection of Neutral Weak Currents, Scientific American, 231 (6) 108-119. DOI: 10.1038/scientificamerican1274-108

Glashow, S. (1975). Quarks with Color and Flavor, Scientific American, 233 (4) 38-50. DOI: 10.1038/scientificamerican1075-38

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1:21 PM | “The Europeans and Australians were too eager to believe in renal denervation”
As you can see, I’m having a competition with myself for the most boring title ever. The story, though, is not boring. Paul Alper writes: I just came across this in the NYT. Here is the NEJM article itself: And here is the editorial in the NEJM: The gist is that on the basis of […] The post “The Europeans and Australians were too eager to believe in renal denervation” appeared first on Statistical Modeling, Causal Inference, and Social Science.
10:33 AM | Two great articles about standardized tests
In the past 12 hours I’ve read two fascinating articles about the crazy world of standardized testing. They’re both illuminating and well-written and you should take a look. First, my data journalist friend Meredith Broussard has an Atlantic piece called Why Poor Schools Can’t Win At Standardized Testing wherein she tracks down the money and […]

July 15, 2014

11:31 PM | Math and Mass Surveillance: A Roundup
List of all the posts so far on mathematics and mass surveillance.
11:23 PM | Why Carl Sagan was better than Neil deGrasse Tyson, and from the most of us too
I’ve recently watched the finale of Cosmos, the new version, presented by Neil deGrasse Tyson. It was a very nice series which seem to push forward the fact that science is based on not knowing, rather than knowing, and the will to know. No, not will, the need to know. We need to know, and […]
10:57 PM | The Amanda Palmer TED talk
They showed it during TEDxMadison.  Here’s what struck me.  She talked a lot about art, a lot about selflessness, a lot about performance.  Many forceful moments.  But there was only one point at the talk where the audience stopped her with a wave of applause, and that was when she put up a slide referring […]
10:54 PM | Thoughts on TEDx
I gave a TED talk!  OK, not exactly — I gave a TEDx talk, which is the locally organized, non-branded version, but same idea.  18 minutes or less, somewhat sloganistic, a flavor of self-improvement and inspiration. I was skeptical of the format.  18 minutes!  How can you do anything?  You can really just say one thing. […]
10:14 PM | another R new trick [new for me!]
While working with Andrew and a student from Dauphine on importance sampling, we wanted to assess the distribution of the resulting sample via the Kolmogorov-Smirnov measure where F is the target.  This distance (times √n) has an asymptotic distribution that does not depend on n, called the Kolmogorov distribution. After searching for a little while, […]
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