销售预测系统，可以根据历史销售数据对未来的销售量进行有效预测，采用BP神经网络对预测模型进行训练，可以达到不错效果-sales forecasting system, based on historical sales data for the future effective sales forecasts, BP neural network model to predict the training, they can achieve good results
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001041s ]
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:0.064330s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001057s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000989s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003148s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000957s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.022875s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001670s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 220661 [ RunTime:0.016931s ]
