模式识别分类器的设计，此为K均值法源码，经调试通过。所用数据为标准IRIS。-Pattern recognition classifier design, the source for the K-means, after debugging through. Data used as the standard IRIS.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002258s ]
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:0.085659s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002319s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002180s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003718s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001889s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015152s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002692s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 3680 [ RunTime:0.001119s ]
