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Why single variable analysis is easier

Jadagul writes: Got a draft of the course schedule for next year. Looks like I might get to teach real analysis. I probably need someone to talk me out of trying to do everything in R^n. A subsequent update indicates that the more standard alternative is teaching one variable analysis. This is my second go […]

Berkeley Lab 'minimalist machine learning' algorithms analyze images from very little data

(DOE/Lawrence Berkeley National Laboratory) Berkeley Lab mathematicians have developed a new approach to machine learning aimed at experimental imaging data. Rather than relying on the tens or hundreds of thousands of images used by typical machine learning methods, this new approach 'learns' much more quickly and requires far fewer images.

Engage with the world's most talented mathematicians and computer scientists in Heidelberg!

(Heidelberg Laureate Forum Foundation) This September, recipients of the Abel Prize, ACM A.M. Turing Award, ACM Prize in Computing, Fields Medal, and the Nevanlinna Prize are invited to gather in Heidelberg to meet with 200 young researchers from all over the world at the 6th Heidelberg Laureate Forum (HLF). Show More Summary

“Deeper into democracy: the legitimacy of challenging Brexit’s majoritarian mandate”

There’s no reason that we should trust someone’s thoughts on politics just because he’s a good chess player, or even a good writer. That said, I found this opinion piece by Jonathan Rowson on Britain and the EU to be worth reading. Also...Show More Summary

Zoologist slams statistical significance

Valentin Amrhein writes that statistical significance and hypothesis testing are not really helpful when it comes to testing our hypotheses. I’m not quite sure I like the title of Amrhein’s post—“Inferential Statistics is not Inferential”—as I think of parameter estimation, model checking, forecasting, etc., all as forms of inference. Show More Summary

Putnam Competition names top students in college mathematics

(Mathematical Association of America) The 78th annual Putnam Mathematical Competition, organized by the Mathematical Association of America, recognized the Massachusetts Institute of Technology as the top team and five undergraduate students were named Putnam Fellows for their high scores on the rigorous six-hour mathematics exam.

Civil engineers at Concordia University devise a cost-saving solution for cities

(Concordia University) Why fix a road today if it's slated to be ripped up for new sewers next summer?This kind of question is at the heart of research from Tarek Zayed, and Amin Hammad, professors in Concordia's Department of Building, Civil and Environmental Engineering (BCEE), and PhD candidates Soliman A. Abu-Samra and Mahmoud Ahmed.

The graphs tell the story. Now I want to fit this story into a bigger framework so it all makes sense again.

Paul Alper points us to these graphs: Pretty stunning. I mean, really stunning. Why are we just hearing about this now, given that the pattern is a decade old? And what’s this: “Data for the U.S. ends in 2007”? Huh? Also, it’s surprising how high the rates were for Japan, Italy, and Germany in the […] The post The graphs tell the story. Show More Summary

Let’s face it, I know nothing about spies.

I saw this news article: Multiple federal agencies investigated claims that former Indiana basketball coach Bobby Knight groped and verbally sexually harassed several female employees when he gave a speech at the National Geospatial-Intelligence Agency in July 2015, according to newly-released documents.... Show More Summary

Climate projections show a warmer future for the Pacific northwest

(Oregon State University) In the midst of an unseasonably warm winter in the Pacific Northwest, a comparison of four publicly available climate projections has shown broad agreement that the region will become considerably warmer inShow More Summary

Cartesian Bicategories

Read Daniel Cicala and Julian Hedges' summary of the Carboni--Walters paper Cartesian Bicategories I.

From Music to Mathematics: Exploring the Connections (Review)

A review of Gareth Roberts's book From Music to Mathematics: Exploring the Connections -- Read more on

Why bees soared and slime flopped as inspirations for systems engineering

(Georgia Institute of Technology) Honeybees gathering nectar inspired an algorithm that eased the burden of host servers handling unpredictable traffic by about 25 percent. Nature can inspire some great engineering, but it can also lead to some flops. Show More Summary

Rotations of Klein’s quartic

The usual argument to show that the group of all orientation-preserving symmetries of the Klein quartic is the simple group $L_2(7)$ of order $168$ goes like this: There are two families of $7$ truncated cubes on the Klein quartic. The triangles of one of the seven truncated cubes in the first family have as center […]

Low power and the replication crisis: What have we learned since 2004 (or 1984, or 1964)?

I happened to run across this article from 2004, “The Persistence of Underpowered Studies in Psychological Research: Causes, Consequences, and Remedies,” by Scott Maxwell and published in the journal Psychological Methods. In this article, Maxwell covers a lot of the material later discussed in the paper Power Failure by Button et al. Show More Summary

Gradual typing

A paper modeling gradually typed programming languages as proarrow equipments (guest post by Max New)

Bob likes the big audience

In response to a colleague who was a bit scared of posting some work up on the internet for all to see, Bob Carpenter writes: I like the big audience for two reasons related to computer science principles. The first benefit is the same reason it’s scary. Show More Summary

Of rabbits and cannons

When does it make sense to shoot a rabbit with a cannon? I was reminded of this question recently when I happened to come across this exchange in the comments section from a couple years ago, in the context of the finding patterns in...Show More Summary

The curse of dimensionality and finite vs. asymptotic convergence results

Related to our (Aki, Andrew, Jonah) Pareto smoothed importance sampling paper I (Aki) received a few times a comment that why bother with Pareto smoothing as you can always choose the proposal distribution so that importance ratios are bounded and then central limit theorem holds. Show More Summary

“Write No Matter What” . . . about what?

Scott Jaschik interviews Joli Jensen (link from Tyler Cowen), a professor of communication who wrote a new book called “Write No Matter What: Advice for Academics.” Her advice might well be reasonable—it’s hard for me to judge; as someone who blogs a few hundred times a year, I’m not really part of Jensen’s target audience. Show More Summary

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