1. Quality metric Quality metric for the desicion tree is the classification error error=number of incorrect predictions / number of examples 2. Greed ...
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其他好文 时间：
2017-05-13 09:49:32
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145
Description Each of the M lanes of the Park of Polytechnic University of Bucharest connects two of the N crossroads of the park (labeled from 1 to N). ...
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其他好文 时间：
2017-05-12 21:56:42
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238
存储管理：这里我们要学介绍两种磁盘阵列：磁盘阵列是由很多价格较便宜的磁盘，组合成一个容量巨大的磁盘组，利用个别磁盘提供数据所产生加成效果提升整个磁盘系统效能。利用这项技术，将数据切割成许多区段，分别存放在各个硬盘上。一、RAID1.RAID是什么：RAID:RedundantArray..
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系统相关 时间：
2017-05-12 14:28:37
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275
1. Linear classifier It will use training data to learn a weight or coefficient for each word. We use the gradient ascent to find the best model with ...
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其他好文 时间：
2017-05-12 00:24:11
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137
One spring day on his way to university Lesha found an array A. Lesha likes to split arrays into several parts. This time Lesha decided to split the a ...
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其他好文 时间：
2017-05-12 00:06:25
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214
传送门 Girls and Boys Time Limit: 5000MS Memory Limit: 10000K Total Submissions: 12717 Accepted: 5659 Description In the second year of the university so ...
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其他好文 时间：
2017-05-12 00:05:50
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276
Awesome Courses Introduction There is a lot of hidden treasure lying within university pages scattered across the internet. This list is an attempt to ...
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其他好文 时间：
2017-05-09 14:59:46
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266
1. Fit locally If the true model changes much, we want to fit our function locally to different regions of the input space. 2. Scaled distance \ we pu ...
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其他好文 时间：
2017-05-07 19:50:16
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125
1. Feature selection Sometimes, we need to decrease the number of features Efficiency: With fewer features, we can compute quickly Interpretaility: wh ...
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其他好文 时间：
2017-05-07 11:47:45
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182
1. Ridge regression A way to automatically balance between bias and varaince situations and regulate overfitting when using many features. because the ...
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其他好文 时间：
2017-05-06 00:54:37
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169
