papering - 博客园

2017年1月12日

What Drives the Need for Database Sharding? DATABASE SHARDING

摘要： wIO瓶颈 http://www.agildata.com/database-sharding/ What Drives the Need for Database Sharding? Database Sharding is a highly scalable approach for impro 阅读全文

posted @ 2017-01-12 17:06 papering 阅读(167) 评论(0) 推荐(0) 编辑

The Rise of Database Sharding DATABASE SHARDING

摘要： w玻璃碎片、0共享 http://www.agildata.com/database-sharding/ The Rise of Database Sharding The concept of Database Sharding has been gaining popularity over t 阅读全文

posted @ 2017-01-12 17:05 papering 阅读(145) 评论(0) 推荐(0) 编辑

为了数学美，拆卸了脚手架

摘要： http://blog.sciencenet.cn/home.php?mod=space&uid=287179&do=blog&id=425373 教科书书常用“定义—定理”的体系，先给出数学定义，然后给出若干性质，从公式到公式，逐步推导。有的教科书采用用信号“反褶、平移、相乘、积分”给出几何阅读全文

posted @ 2017-01-12 14:46 papering 阅读(159) 评论(0) 推荐(0) 编辑

Scanline Fill Algorithm

摘要： https://www.sccs.swarthmore.edu/users/02/jill/graphics/hw3/hw3.html http://web.cs.ucdavis.edu/~ma/ECS175_S00/Notes/0411_b.pdf 阅读全文

posted @ 2017-01-12 13:55 papering 阅读(252) 评论(0) 推荐(0) 编辑

最近点对距离

摘要： http://openinx.github.io/2013/01/01/plane-sweep-thinking/ 平面直角坐标系中有N个点，给出N个点的坐标，请设计一个高效算法计算最近点对距离。阅读全文

posted @ 2017-01-12 13:46 papering 阅读(197) 评论(0) 推荐(0) 编辑

微信红包的随机算法

摘要： https://www.zhihu.com/question/22625187 https://www.zybuluo.com/yulin718/note/93148 概况：2014年微信红包使用数据库硬抗整个流量，2015年使用cache抗流量。微信的金额什么时候算？答：微信金额是拆的时候实时阅读全文

posted @ 2017-01-12 09:18 papering 阅读(317) 评论(0) 推荐(0) 编辑

传染病学的估算模型

摘要： https://zhuanlan.zhihu.com/p/19668212?columnSlug=WebNotes 微信红包是一次病毒营销的经典案例，其实也可以从传染病学的估算模型来判断究竟有多少用户会被「感染」。阅读全文

posted @ 2017-01-12 09:06 papering 阅读(182) 评论(0) 推荐(0) 编辑

2017年1月11日

Monte Carlo methods

摘要： Monte Carlo methods https://zh.wikipedia.org/wiki/蒙地卡羅方法通常蒙地卡羅方法可以粗略地分成两类：一类是所求解的问题本身具有内在的随机性，借助计算机的运算能力可以直接模拟这种随机的过程。例如在核物理研究中，分析中子在反应堆中的传输过程。中子与原子核阅读全文

posted @ 2017-01-11 22:13 papering 阅读(170) 评论(0) 推荐(0) 编辑

摘要： https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html The TE request-header field indicates what extension transfer-codings it is willing to accept 阅读全文

posted @ 2017-01-11 22:05 papering 阅读(432) 评论(0) 推荐(0) 编辑

摘要： //array(2) { ["shopasin"]=> string(3) "www" ["whelp2017"]=> string(9) "whelp2017" } //array(1) { ["shopasin"]=> string(4) "w123" } 阅读全文

posted @ 2017-01-11 16:58 papering 阅读(211) 评论(0) 推荐(0) 编辑

Convolution and polynomial multiplication

摘要： https://www.mathworks.com/help/matlab/ref/conv.html?s_tid=gn_loc_drop conv Convolution and polynomial multiplication Convolution and polynomial multip 阅读全文

posted @ 2017-01-11 11:22 papering 阅读(444) 评论(0) 推荐(0) 编辑

Token Based Authentication -- Implementation Demonstration

摘要： https://www.w3.org/2001/sw/Europe/events/foaf-galway/papers/fp/token_based_authentication/ 阅读全文

posted @ 2017-01-11 01:18 papering 阅读(165) 评论(0) 推荐(0) 编辑

2017年1月10日

摘要： HTTP The Definitive Guide Request headers are headers that make sense only in a request message. They give information about who or what is sending th 阅读全文

posted @ 2017-01-10 21:24 papering 阅读(168) 评论(0) 推荐(0) 编辑

Feature extraction using convolution

摘要： http://ufldl.stanford.edu/wiki/index.php/Feature_extraction_using_convolution http://ufldl.stanford.edu/wiki/index.php/卷积特征提取阅读全文

posted @ 2017-01-10 20:02 papering 阅读(178) 评论(0) 推荐(0) 编辑

郭靖的师傅与反木桶效应

摘要： http://blog.sciencenet.cn/home.php?mod=space&uid=287179&do=blog&id=946879 郭靖的师傅与反木桶效应《射雕英雄传》中的郭靖有多少位师傅？从来没想去把名单细节记住，大数据时代，人们已改变了学习方式和记忆方法，只要能记住一点线索阅读全文

posted @ 2017-01-10 18:04 papering 阅读(313) 评论(0) 推荐(0) 编辑

E.F.Codd IBM Oracle

摘要： http://blog.sciencenet.cn/home.php?mod=space&uid=287179&do=blog&id=883429 《传奇》: “宁愿用这一生等你发现,…，今生的爱情故事不会再改变。” 接下来，E.F.Codd的路上，少有鲜花，多有荆棘。 1983年，笔者到美国学习数阅读全文

posted @ 2017-01-10 16:33 papering 阅读(411) 评论(0) 推荐(0) 编辑

leave document design to document designers, and to let authors get on with writing documents

摘要： http://www.latex-project.org/about/ 阅读全文

posted @ 2017-01-10 16:32 papering 阅读(157) 评论(0) 推荐(0) 编辑

层次数据库的模型与值关系数据库的模型与值

摘要： http://blog.sciencenet.cn/home.php?mod=space&uid=287179&do=blog&id=883429 阅读全文

posted @ 2017-01-10 16:17 papering 阅读(165) 评论(0) 推荐(0) 编辑

The Backpropagation Algorithm

摘要： https://page.mi.fu-berlin.de/rojas/neural/chapter/K7.pdf 7.1 Learning as gradient descent We saw in the last chapter that multilayered networks are ca 阅读全文

posted @ 2017-01-10 15:13 papering 阅读(183) 评论(0) 推荐(0) 编辑

SUBSTRING_INDEX()

摘要： http://dev.mysql.com/doc/refman/5.7/en/string-functions.html#function_substring-index 阅读全文

posted @ 2017-01-10 14:33 papering 阅读(174) 评论(0) 推荐(0) 编辑

a Javascript library for training Deep Learning models

摘要： w强化算法和数学，来迎接机器学习、神经网络。 http://cs.stanford.edu/people/karpathy/convnetjs/ ConvNetJS is a Javascript library for training Deep Learning models (Neural N 阅读全文

posted @ 2017-01-10 10:59 papering 阅读(211) 评论(0) 推荐(0) 编辑

Online handwriting recognition using multi convolution neural networks

摘要： w可以考虑从计算机的“机械性、重复性”特征去设计“低效的”算法。 https://www.codeproject.com/articles/523074/webcontrols/ Online handwriting recognition using multi convolution neura 阅读全文

posted @ 2017-01-10 10:29 papering 阅读(334) 评论(0) 推荐(0) 编辑

摘要： https://en.wikipedia.org/wiki/Clock_network 阅读全文

posted @ 2017-01-10 09:51 papering 阅读(142) 评论(0) 推荐(0) 编辑

describe neural networks as a series of computational steps via a directed graph.

摘要： https://www.microsoft.com/en-us/research/product/cognitive-toolkit/ https://github.com/microsoft/cntk https://github.com/Microsoft/CNTK/blob/master/RE 阅读全文

posted @ 2017-01-10 09:25 papering 阅读(135) 评论(0) 推荐(0) 编辑

2017年1月9日

max key length is 1000 bytes

摘要： 1 ALTER TABLE ad_keyword_brand 2 ADD CONSTRAINT w1 UNIQUE (keyword,adasin,brand,page_position,country,ad_kind,ad_tag); 阅读全文

posted @ 2017-01-09 17:00 papering 阅读(179) 评论(0) 推荐(0) 编辑

2017年1月6日

205 Reset Content

摘要： https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html The server has fulfilled the request and the user agent SHOULD reset the document view which c 阅读全文

posted @ 2017-01-06 23:06 papering 阅读(233) 评论(0) 推荐(0) 编辑

The Path Attribute

摘要： https://tools.ietf.org/html/rfc6265#section-5.1.1 4.1.2.4. The Path Attribute The scope of each cookie is limited to a set of paths, controlled by the 阅读全文

posted @ 2017-01-06 16:32 papering 阅读(190) 评论(0) 推荐(0) 编辑

track message forwards, avoiding request loops, and identifying the protocol capabilities of all senders along the request/response chain

摘要： https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html The TRACE method is used to invoke a remote, application-layer loop- back of the request messag 阅读全文

posted @ 2017-01-06 13:05 papering 阅读(216) 评论(0) 推荐(0) 编辑

test hypertext links for validity, accessibility, and recent modification

摘要： https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html The HEAD method is identical to GET except that the server MUST NOT return a message-body in th 阅读全文

posted @ 2017-01-06 12:45 papering 阅读(168) 评论(0) 推荐(0) 编辑

ES6 will change the way you write JS code.

摘要： https://hacks.mozilla.org/2015/04/es6-in-depth-an-introduction/ Counting to 6 The previous editions of the ECMAScript standard were numbered 1, 2, 3, 阅读全文

posted @ 2017-01-06 12:29 papering 阅读(161) 评论(0) 推荐(0) 编辑

ECMAScript Web APIs node.js

摘要： https://hacks.mozilla.org/2015/04/es6-in-depth-an-introduction/ What falls under the scope of ECMAScript? The JavaScript programming language is stand 阅读全文

posted @ 2017-01-06 12:11 papering 阅读(164) 评论(0) 推荐(0) 编辑

摘要： https://hacks.mozilla.org/2015/06/es6-in-depth-symbols/ 阅读全文

posted @ 2017-01-06 10:29 papering 阅读(219) 评论(0) 推荐(0) 编辑

HTML/Elements/base

摘要： https://www.w3.org/wiki/HTML/Elements/base HTML/Elements/base < HTML‎ | Elements List of Elements Document metadata head title base isindex link meta 阅读全文

posted @ 2017-01-06 00:17 papering 阅读(274) 评论(0) 推荐(0) 编辑

2017年1月5日

frag General URL components

摘要： HTTP: The Definitive Guide 2.2.7 Fragments Some resource types, such as HTML, can be divided further than just the resource level. For example, for a 阅读全文

posted @ 2017-01-05 22:39 papering 阅读(181) 评论(0) 推荐(0) 编辑

a chip multiprocessor

摘要： COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION A multicore computer, also known as a chip multiprocessor, combines tw 阅读全文

posted @ 2017-01-05 20:51 papering 阅读(180) 评论(0) 推荐(0) 编辑

IBM 3090 with Vector Facility

摘要： COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION 阅读全文

posted @ 2017-01-05 20:41 papering 阅读(185) 评论(0) 推荐(0) 编辑

A Taxonomy of Computer Organizations

摘要： COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION 阅读全文

posted @ 2017-01-05 20:39 papering 阅读(143) 评论(0) 推荐(0) 编辑

Approaches to Vector Computation

摘要： COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION 阅读全文

posted @ 2017-01-05 20:38 papering 阅读(119) 评论(0) 推荐(0) 编辑

VECTOR COMPUTATION

摘要： COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION Although the performance of mainframe general-purpose computers contin 阅读全文

posted @ 2017-01-05 20:34 papering 阅读(184) 评论(0) 推荐(0) 编辑

cache-coherent nonuniform memory access

摘要： COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION 阅读全文

posted @ 2017-01-05 20:33 papering 阅读(213) 评论(0) 推荐(0) 编辑