本程序是BP算法的演示程序, 其中的Levenberg-Marquardt算法具有实用价值。随代码还提供帮助文件，非常方便。-BP algorithm Demonstration Program, which Levenberg-Marquardt algorithm has practical value. With the code also provides help files, a very convenient.
文 件 列 表
ANN SRC Arithmetic res Arithmetic.dll Help.doc MatrixBase.dll NNBP.exe example 测试数据.txt example
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001408s ]
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:0.094069s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001262s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001942s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001267s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003775s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001129s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003367s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015724s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001458s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 282474 [ RunTime:0.001485s ]
