机器学习:准确率(Precision)、召回率(Recall)、F值(F-Measure)、ROC曲线、PR曲线 在介绍指标前必须先了解“混淆矩阵”: 混淆矩阵 True Positive(真正,TP):将正类预测为正类数,是正的,也预测正的 True Negative(真负,TN):将负类预测为负 ...
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其他好文 时间:
2018-06-21 17:40:14
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182
leetcode_11. Container With Most Water 一,问题: Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n ver ...
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其他好文 时间:
2018-06-21 00:13:05
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182
66_Plus One [TOC] Description Given a non empty array of digits representing a non negative integer, plus one to the integer. The digits are stored su ...
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其他好文 时间:
2018-06-17 12:29:13
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175
问题描述: Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. Example 1: Example 2: Exa ...
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其他好文 时间:
2018-06-17 11:08:01
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180
Given a non-negative index k where k ≤ 33, return the kth index row of the Pascal's triangle. Note that the row index starts from 0. In Pascal's trian ...
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其他好文 时间:
2018-06-14 01:09:10
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203
Given a singly linked list, you are supposed to rearrange its elements so that all the negative values appear before all of the non-negatives, and all ...
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其他好文 时间:
2018-06-13 21:06:20
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267
问题描述: Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your ...
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其他好文 时间:
2018-06-11 10:59:20
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180
描述The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total n ...
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编程语言 时间:
2018-06-11 01:59:16
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175
描述Given a list, rotate the list to the right by k places, where k is non-negative.For example: Given 1->2->3->4->5->nullptr and k = 2, return 4->5->1- ...
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编程语言 时间:
2018-06-09 22:07:25
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132
Given a non-negative index k where k ≤ 33, return the kth index row of the Pascal's triangle. Note that the row index starts from 0. In Pascal's trian ...
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其他好文 时间:
2018-06-09 15:23:53
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156