School is now OUT; summer, bring it on! I just made a set of Summer Job Cards in an effort to:keep Momma sanetry on the "perfect summer parent" facadeavoid THIS (we're in serious trouble!)It's a freebie to use how you see fit.*Let me just say this...  I have FIVE kids. Some of them have made me feel like the mother-of-the-year award was imminent. Those kiddos probably didn't need a summer schedule. Others have been a tad harder to parent. (Although I haven't yet run naked, screaming, out […]

This is a guest post by Eugene Stern. Sometimes you learn just as much from a bad analogy as from a good one. At least you learn what people are thinking. The other day I read this response to this NYT article. The original article asked whether the Common Core-based school reforms now being put […]

In this post I will explore a bit the question on how to calculate the discrete gradient and the discrete divergence of an image and a vector field, respectively. Let be a discrete image, i.e. denotes the gray value at the -th pixel. The famous total variation denoising amounts to minimizing the functional where the […]

6 = (1 * 9) - (1 * 3) Also: 6 + 1 = 9 + 1 - 3 Also: 6 = 19 - 13

Here is a link to the announcement and details. Congratulations to Benjamin Edelman, Michael Ostrovsky, Michael Schwarz, and Hal R. Varian, for their papers:Benjamin Edelman, Michael Ostrovsky, and Michael Schwarz, “Internet Advertising and the Generalized Second-Price Auction: Selling Billions of Dollars Worth of Keywords” American Economic Review 97, pages 242-259, 2007andHal R. Varian, “Position Auctions” International Journal of Industrial Organization 25, pages […]