Given an array of integers, every element appears three times except for one. Find that single one.
Note:
Your algorithm should have a linear runtime complexity. Could you implement it without using...
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其他好文 时间:
2015-06-02 09:27:36
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118
Linear_regression与 Logistic_regression简单比较与实现
好久没写博客了,在度厂实习期间更是天天累成了狗的节奏,最近有幸蹭到隔壁组老大小黑黑关于machine learning这块的培训(以下图片均摘自小黑黑的PPT),甚是感动,决定好好学习下这块的东西。Linear_regression 和 Logistic_regression 其实是非常相似的两种算法。...
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编程语言 时间:
2015-06-01 00:51:07
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268
Given an array of integers, every element appears three times except for one. Find that single one.
Note:
Your algorithm should have a linear runtime complexity. Could you implement it without usi...
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其他好文 时间:
2015-05-31 12:31:13
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118
css3的gradient分为两种:线性渐变(linear)和径向渐变(radial)。一、线性渐变linear-gradientlinear-gradient([设置方向],[设置开始颜色],[设置多种过度颜色],[设置结束颜色])参数:第一个参数:指定渐变方向,可以用“角度”的关键字或“英文”来...
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Web程序 时间:
2015-05-30 21:01:08
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151
转自:http://blog.csdn.net/dongtingzhizi/article/details/16884215Linear Regression总结作者:洞庭之子微博:洞庭之子-Bing(2013年11月)关于linear regression,Andrew Ng老师的课程中介绍了两种...
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其他好文 时间:
2015-05-30 19:39:34
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136
Given an array of integers, every element appears twice except for one. Find that single one.
Note:
Your algorithm should have a linear runtime complexity. Could you implement it without using ext...
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其他好文 时间:
2015-05-29 18:16:19
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142
数据量小,选用 high bias/low variance模型(Naive Bayes),因为low bias/high variance模型(KNN,logistic regression)会overfitNaive Bayes:简单,只需要计数就可以;数据量小时,也适用;如果各因素独立(比如词...
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其他好文 时间:
2015-05-29 13:52:16
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196
problem 1: $\min_{\beta} ~f_\alpha(\beta):=\frac{1}{2}\Vert y-X\beta\Vert^2 +\alpha\Vert \beta\Vert$problem 2: $\min_{\beta} ~\frac{1}{2}\Vert y-X\b.....
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其他好文 时间:
2015-05-29 06:12:52
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154
题目描述
Given an array of integers, every element appears twice except for one. Find that single one.
Note:
Your algorithm should have a linear runtime complexity. Could you implement it without...
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其他好文 时间:
2015-05-28 23:16:30
阅读次数:
173
学习Logistic Regression的笔记与理解1.首先从结果往前来看下how logistic regression make predictions。设我们某个测试数据为X(x0,x1,x2···xn),Θ(θ0,θ1,θ2,···θn)为我们的学习算法所学到的参数,那么写成向量的话就变成...
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其他好文 时间:
2015-05-28 21:13:02
阅读次数:
157