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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
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posted @ 2017-01-12 09:18
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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」。
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posted @ 2017-01-12 09:06
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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
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posted @ 2017-01-11 22:13
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https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html The TE request-header field indicates what extension transfer-codings it is willing to accept
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posted @ 2017-01-11 22:05
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//array(2) { ["shopasin"]=> string(3) "www" ["whelp2017"]=> string(9) "whelp2017" } //array(1) { ["shopasin"]=> string(4) "w123" }
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posted @ 2017-01-11 16:58
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https://www.mathworks.com/help/matlab/ref/conv.html?s_tid=gn_loc_drop conv Convolution and polynomial multiplication Convolution and polynomial multip
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posted @ 2017-01-11 11:22
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posted @ 2017-01-11 01:18
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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
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posted @ 2017-01-10 21:24
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posted @ 2017-01-10 20:02
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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
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posted @ 2017-01-10 18:04
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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
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posted @ 2017-01-10 16:33
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posted @ 2017-01-10 16:32
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posted @ 2017-01-10 16:17
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2.3.神经网络基础 | 猪猪のAI笔记 (gitbook.io) Image classification from scratch https://keras.io/examples/vision/image_classification_from_scratch/ 翻译 搜索 复制
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posted @ 2017-01-10 10:59
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posted @ 2017-01-10 10:29
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posted @ 2017-01-10 09:51
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posted @ 2017-01-10 09:25
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1 ALTER TABLE ad_keyword_brand 2 ADD CONSTRAINT w1 UNIQUE (keyword,adasin,brand,page_position,country,ad_kind,ad_tag);
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posted @ 2017-01-09 17:00
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posted @ 2017-01-06 16:32
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posted @ 2017-01-06 13:05
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posted @ 2017-01-06 12:45
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posted @ 2017-01-06 12:11
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posted @ 2017-01-05 22:39
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COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION Although the performance of mainframe general-purpose computers contin
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COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION In terms of commercial products, the two common approaches to providing
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COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION Operating System Design IssuesFull exploitation of a cluster hardware c
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COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION The concept of thread used in discussing multithreaded processors may o
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