摘要： 全文转自：https://www.cnblogs.com/gatherstars/p/6084696.html#commentform 这篇真的讲的清楚明白！要多复习！加深记忆！ 1.概述 AUC（Area Under roc Curve）是一种用来度量分类模型好坏的一个标准。这样的标准其实有很多， 阅读全文

摘要： On a broken keyboard, some of the keys are worn out. So when you type some sentences, the characters corresponding to those keys will not appear on sc 阅读全文

摘要： The string APPAPT contains two PAT's as substrings. The first one is formed by the 2nd, the 4th, and the 6th characters, and the second one is formed 阅读全文