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17 ore fa · The University of Birmingham (informally Birmingham University) is a public research university in Birmingham, England.It received its royal charter in 1900 as a successor to Queen's College, Birmingham (founded in 1825 as the Birmingham School of Medicine and Surgery), and Mason Science College (established in 1875 by Sir Josiah Mason), making it the first English civic or 'red brick ...
2 giorni fa · Founded in 1404, the University of Turin is one of the largest and most prestigious Italian universities.
17 ore fa · PCA（主成分分析） 作用： 1、减少变量的的个数 2、降低变量之间的相关性，从而降低多重共线性。 3、新合成的变量更好的解释多个变量组合之后的意义 PCA的原理： 样本X和样本Y的协方差(Covariance)： 协方差为正时说明X和Y是正相关关系，协方差为负时X和Y是负相关关系，协方差为0时X和Y相互独立。
17 ore fa · October 17, 2018. Seven or eight years ago much of the news industry lost its head over a supposed “ pivot to video” after Facebook pushed live and other formats with the promise of monetization to come. That didn’t work out so well for publishers, many of whom had hired expensive video teams and found they had to row back after interest ...
17 ore fa · The University Branch Library opened on November 10, 2011, a two-story, 40,193-square-foot building situated behind the University of Houston System - Sugar Land (UHSSL) on Highway 59 on the university campus. It is Fort Bend County’s second library/college joint venture.
