[Quanta] New Theory Cracks Open the Black Box of Deep Learning

A new idea called the “information bottleneck” is helping to explain the puzzling success of today’s artificial-intelligence algorithms — and might also explain how human brains learn. 一个被称为“信息瓶颈”的新想法有助于解释目前人工智能算法令人费解的成功，或许也能解释人脑是如何学习的。 By Natalie Wolchover September 21, 2017 Even as machines known as “deep neural networks” have learned to... Read more 21 Sep 2017 - 59 minute read

[PHYS.ORG] Part of New York's subway system found to conform to random matrix theory

(Phys.org)—A pair of researchers, one with the University of Toronto, the other with the University of California, has found that at least one line on New York city’s metro system conforms to random matrix theory. In their paper published in Physical Review E, Aukosh Jagannath and Thomas Trogdon describe their study, which included using stati... Read more 12 Sep 2017 - 10 minute read

人物小传: Douglas R. Hofstadter

Douglas Richard Hofstadter，中文名侯世达，著名的计算机科学家，认知科学家，心理学家，人工智能方面专家，普利策奖获得者，AAAS Fellow，著有多本畅销书籍，如《Godel, Escher, Bach: An Eternal Golden Braid》和《I am a strange loop》等。诺贝尔物理学奖得主Robert Hofstadter之子。生平因为父亲的缘故，几乎在Stanford长大。粒子物理博士毕业。现为印第安纳大学伯明翰分校任教。对于人工智能有着自己独到的理解。学术研究探寻认知的本质趣事 Read more 10 Sep 2017 - less than 1 minute read

QR码

本文使用python第三方库，简单编写一个二维码解析和生成的程序。第三方库 qrtools pypng pyqrcode zbar 示例程序下面程序在python3.5环境下测试通过 import pytools import pypng import pyqrcode qr = pyqrcode.create("brucejunlee.site") qr.png("myQRcode.png", scale=6) qr = qrtools.QR() qr.decode("myQRcode.png") print qr.data Read more 02 Sep 2017 - less than 1 minute read

优化

本文简单讲解优化问题中的一些基本知识和技巧什么是优化凸优化 Boyd 非凸优化 Jacobian矩阵 Hessian矩阵 Rosenbrock函数函数F和f来自于Gil Strang, “Linear Algebra and Its Applications”，对应函数具有一般形式 a,b,c之间存在特殊关系 [X, Y] = meshgrid(-2:0.2:2,-2:0.2:2) Z = X.^4 -2 * X.^2 + Y.^2 figure surface(X, Y, Z) view(3) monkey saddle ... Read more 01 Sep 2017 - less than 1 minute read