该文档是清华大学的模式识别教程，该版本是网页版本，浏览非常方便，内容也非常详细，非常适合初学者，个人举得特别是支持向量机那一章描述很棒！-this document is from Tsinghua University,this is the html version,it is convenient to read, it is very suitable for the elementary readers,in my own opinion,the charter of svm is very detail and easily understandable.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001312s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.085423s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001419s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001808s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001322s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004730s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001119s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005893s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021983s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001768s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 142342 [ RunTime:0.014783s ]
