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5.3.1 The Validation Set Approachsample() function splits the set of observationsinto two halves, by selecting a random subset of 196 observations out... 阅读全文
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refhttp://www.zhizhihu.com/html/y2010/2292.htmlKernel FunctionsBelow is a list of some kernel functions available from the existing literature. As was... 阅读全文
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key points:1 conversion between different types2 overflow 会有比较多corner cases需要考虑3 iterationrelated questions:Median of Two Sorted ArraysReverse Integer... 阅读全文
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今天完整刷完leetcode除了自己看不懂follow不下来的 199道题。。。纪念一下Given a string S, you are allowed to convert it to a palindrome by adding characters in front of it. Find ... 阅读全文