回归(Regression)分析包括线性回归(Linear Regression),这里主要是指多元线性回归和逻辑斯蒂回归(Logistic Regression)。其中,在数据化运营中更多的使用逻辑斯蒂回归,它包括响应预测、分类划分等内容。 多元线性回归主要描述一个因变量如何随着一批自变量的变化....
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其他好文 时间:
2014-08-04 23:58:10
阅读次数:
613
Single Number II
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 extra memory?...
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其他好文 时间:
2014-08-02 12:53:53
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289
Single NumberGiven an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runti...
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其他好文 时间:
2014-08-01 04:44:31
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189
A very interesting numeric problem. It involves a lot tricks.Linear search (by +\-) is not feasible - too slow. So binary search is a good idea. Also ...
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其他好文 时间:
2014-07-29 14:02:08
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187
读硕士的时候, 基本上就研一上课, 其他都是自己在学或者旁听 (还有些课程都忘光了, 可能有点印象...). 研一主要学习两门课:1. 泛函分析 教材: Lars Homander, Linear Functional Analysis...具体啥的就不知道了, 是复印的. 老师: 黄煜教授 ...
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其他好文 时间:
2014-07-27 22:44:49
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229
首先必须明白什么是线性回归, linear 线性:当y和x之间成比例,为直线时。 Regreesion 回归:即研究几个变量之间的关联关系,特别当因变量和自变量为线性关系时,它是一种特殊的线性模型。最简单的情形是一个自变量和一个因变量,且它们大体上有线性关系,这叫一元线性回归,即模型为Y=a+bX+...
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其他好文 时间:
2014-07-27 22:20:19
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190
1. what is hash table? how to implement in C? how to deal withconflicts? (linkedlist, linear probing, double hashing...etc)什么是hashtable, hash function...
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其他好文 时间:
2014-07-27 22:06:19
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310
题目:Given an array of integers, every element appears three times except for one. Find that single one.Note:Your algorithm should have a linear runtim....
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编程语言 时间:
2014-07-27 10:46:02
阅读次数:
294
题目:Given an array of integers, every element appears twice except for one. Find that single one.Note:Your algorithm should have a linear runtime comp....
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编程语言 时间:
2014-07-27 10:43:42
阅读次数:
239
此文仅为学习记录,内容会包括一些数学概念,定义,个人理解的摘要。希望能够分享一些学习内容。第一节:Row Reduction and Echelon FormsEchelon form: 行消元后的矩阵Reduced echelon form: 行消元并且leading entry为1的矩阵。Ech...
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移动开发 时间:
2014-07-27 09:48:32
阅读次数:
1728