基本的k-means聚类算法c++实现，对于理解算法的过程非常有帮助。 Basic implementation of k-means algorithm with c++, it is very helpful to understand the procedure of k-means algorithm.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000968s ]
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:0.059779s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000866s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001028s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000880s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003080s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000781s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003467s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.013695s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001060s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 555355 [ RunTime:0.036267s ]
