统计学入门，对学习信息检索、模式识别、或人工智能的很有帮助，讲得很透彻-Introduction to statistics, to learn information retrieval, pattern recognition, artificial intelligence, or helpful, speaking very thorough
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001309s ]
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:0.091079s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001250s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001903s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001289s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003571s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001083s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003177s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014585s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001279s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 318149 [ RunTime:0.001340s ]
