一个非常不错的BP算法程序，这是一个名为bp.m的文件，对于理解BP算法会很有帮助。-The BP algorithm is a very good program, it is a named bp.m file would be helpful for understanding the BP algorithm.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002569s ]
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:0.105841s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002330s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001977s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002151s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003691s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001999s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003269s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016162s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002542s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 179585 [ RunTime:0.001168s ]
