R语言数据分析与挖掘实战-畅读网

　　　　

R语言数据分析与挖掘实战

作者：张良均

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mobi/epub/pdf/awz3

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内容简介:

本书共16章，分三个部分：基础篇、实战篇、提高篇。基础篇介绍了数据挖掘的基本原理，实战篇介绍了一个个真实案例，通过对案例深入浅出的剖析，使读者在不知不觉中通过案例实践获得数据挖掘项目经验，同时快速领悟看似难懂的数据挖掘理论。读者在阅读过程中，应充分利用随书配套的案例建模数据，借助相关的数据挖掘建模工具，通过上机实验，以快速理解相关知识与理论。高级篇介绍了基于R语言二次开发的数据挖掘应用软件，使读者体验到数据挖掘二次的开发的魅力。

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SHOW FULL COLUMNS FROM `ls_nav` [ RunTime:0.017629s ]
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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 3 LIMIT 1 [ RunTime:0.014971s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 38 LIMIT 1 [ RunTime:0.002895s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.005039s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.002376s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1771890442 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:1.707111s ]

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