寻找函数的全局极小值，global minimization of contrast function with random restarts the data are assumed whitened (i.e. with identity covariance matrix). The output is such that Wopt*x are the independent sources.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001502s ]
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:0.136478s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002143s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.012948s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.012135s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006239s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001425s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004755s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.023377s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001447s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 461117 [ RunTime:0.027467s ]
