一直没有时间把我的笔记搬上来,其实是因为我的书还没有到真正的笔记并没有形成。今晚写完一篇小论文后有点时间,于是决定做这件事。把我近期对数据处理的练习保留下来,备遗忘后查看。 1.(a)Create vector s = (1; q; q2; : : : ; q50)T for q = 0.33 q <- .33 b <- 0:50 # line a <- rep(q,50)...
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Learn MoreAudio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser. Lying on the chaise longue, my grandpa talked with me in a sunny afternoon. He closed his eyes that seemed considerably tired. I wanted to ask him to have a rest but he stopped me which...
Learn More在美国的第一个学期神不知鬼不觉地就过去了,今天打开下学期已选的课程仔细研究一下发现Computing Statistics课程使用的课本是Rizzo的Statistical Computing with R。一个大大的问号摆在面前,什么是R?翻了一些资料和google books上该书的preview发现R就是统计计算中赫赫有名的The R...
Learn MoreAudio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser. The last lecture also named Really Achieving Your Childhood Dream was given by Randy Pausch on Sept. 18, 2007 which was his last several days of his life. His lecture could be divided into 3...
Learn MoreLiu Xiaobo’s word crimes, the Charter 2008 petition itself and several online essays advocating peaceful reform, were deemed so venal that in December of last year he was sentenced, to 11 years in jail for “inciting subversion of state power” and a further two years’ deprivation of political rights. Born 28 December 1955, he won the Nobel Peace Prize because he...
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