Backpropagation in the Brain?

Ask and ye shall receive :-) In an earlier post I recommended a talk by Ilya Sutskever of OpenAI (part of an MIT AGI lecture series). In the Q&A someone asks about the status of backpropagation (used for training of artificial deep neural nets) in real neural nets, and Ilya answers that it’s currently not …

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Pseudocode in LyX

Fair warning: This post is for LyX users only. When I’m writing a paper or presentation in LaTeX (using LyX, of course) and want to include a program chunk or algorithm in pseudocode, I favor the algorithmicx package (and specifically the algpseudocode style). There being no intrinsic support for the package in LyX, I have …

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B.S.-ing Precisely

In a recent blog post titled “Excessive Precision“, John D. Cook points out the foolishness of articulating results to an arbitrarily high degree of precision when the inputs are themselves not that precise. To quote him: Excessive precision is not the mark of the expert. Nor is it the mark of the layman. It’s the …

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Physics as a Strange Attractor

Almost every student who attends a decent high school will be exposed to Special Relativity. Their science/physics teacher may not really understand it very well, may do a terrible job trying to explain it. But the kid will have to read a textbook discussion and (in the internet age) can easily find more with a …

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To Rally or Not to Rally?

As I approach this week the “Stand Up for Peace” rally that I have been helping to plan for months, I began to think about what drives people to attend rallies or to stay home. As someone who has not planned a rally before but who has participated in many over the decades, I started to wonder …

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Beyond the Soccer Mom

The white, middle class, minivan-driving suburban “Soccer Mom” has been part of U.S. political discourse since at least the 1996 presidential election. Two decades later, soccer is so embedded in mainstream American culture that a candidate is using past college playing experience to boost her campaign. Democrat Amy McGrath is challenging GOP incumbent Andy Barr …

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