大家都清楚神经网络在上个世纪七八十年代是着实火过一回的,尤其是后向传播BP算法出来之后,但90年代后被SVM之类抢了风头,再后来大家更熟悉的是SVM.AdaBoost.随机森林.GBDT.LR.FTRL这些概念.究其原因,主要是神经网络很难解决训练的问题,比如梯度消失.当时的神经网络研究进入一个低潮期,不过Hinton老人家坚持下来了. 功夫不负有心人,2006年Hinton和学生发表了利用RBM编码的深层神经网络的Science Paper:Reducing the Dimensionalit…

原文发布于我的微信公众号: GeekArtT. 从CFA到如今的Data Science/Deep Learning的学习已经有一年的时间了.期间经历了自我的兴趣.擅长事务的探索和试验,有放弃了的项目,有新开辟的路线,有有始无终的遗憾,也有还在继续的坚持.期间有数不清的弯路.失落,有无法一一道明的挫败和孤独,也有每日重复单调训练而积累起来的自信与欣喜.和朋友聊天让我意识到,将我目前所摸索到的一些材料和路径分享出来,使其他想要进入这个领域的人或者仅仅是兴趣爱好者能够少走一些弯路,大概是有些意义的.…

今年 6 月份,Alex Rodriguez 和 Alessandro Laio 在 Science 上发表了一篇名为<Clustering by fast search and find of density peaks>的文章,为聚类算法的设计提供了一种新的思路.虽然文章出来后遭到了众多读者的质疑,但整体而言,新聚类算法的基本思想很新颖,且简单明快,值得学习.这个新聚类算法的核心思想在于对聚类中心的刻画上,本文将对该算法的原理进行详细介绍,并对其中的若干细节展开讨论. 最后,附上作者在补充…

Apparently, this is an excellent interdisciplinary study. This paper drawn on a simple but large database that contains notable individuals in Europe and North America over two thousand years, analyzed their migration activities by utilizing tools an…

Chapter1 Introduction That is the art and talent involved in programming—reducing complexity to simplicity. A “bad programmer” is just somebody who fails to reduce the complexity. So, a “good programmer” should do everything in his power to make what…

This is the last in a series of Postgres posts that Pat Shaughnessy wrote based on his presentation at the Barcelona Ruby Conference. You can also watch the video recording of the presentation. The series was originally published on his personal blog…

学习Data Science at the Command Line时,win7下安装环境是遇到了一些小问题,最后通过百度解决. 官方指导可以在这个地址找到:http://datascienceatthecommandline.com/ 1)电脑安装完vagrant+virtual box之后,新建工作目录, 默认会在c:\User\<username>\目录下生成.vagrant.d及\VirtualBox VMs目录,C盘空间可能会因此而不足. a)打开VirtualBox,从菜单项选择…

This started out as a list of top Computer Science blogs, but it more closely resembles a set: the order is irrelevant and there are no duplicate elements; membership of this set of blogs satisfies all of the following conditions: they are written by…

Writing the first draft of your science paper — some dos and don’ts 如何起草一篇科学论文?经验丰富的Angel Borja教授告诉你哪些是必要的而哪些是应该避免的!这是继Angel Borja教授前两篇撰写论文技巧的文章大受欢迎后又一力作.如果您正在准备撰写论文并想在国际期刊上发表,那么这篇文章非常值得您参考并收藏!   Four steps to preparing your first draft Here is the p…

https://github.com/mattbane/RecommenderSystem http://grouplens.org/datasets/movielens/ KDDCUP-2012官网 From kdnuggets Data repositories AWS (Amazon Web Services) Public Data Sets, provides a centralized repository of public data sets that can be seamle…