以某区水文数据为例，在matlab7中构建BP神经网络，进行仿真预测。-Hydrological data in a certain district, for example, in matlab7 Building BP neural networks, simulation prediction.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000979s ]
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:0.065056s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.017949s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001422s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004191s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001019s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024621s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001855s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 32028 [ RunTime:0.016938s ]
