改进的pso算法（3个m文件和一个说明文件）：
本算法实现Clerc and Kennedy 2002年对pso算法的重要改进-Improved PSO algorithm (3 m documents and a note): This algorithm Clerc and Kennedy 2002 years, the importance of improved PSO algorithm
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000950s ]
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:0.075937s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001072s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000911s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003070s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000889s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003661s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014601s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001196s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 4883 [ RunTime:0.015872s ]
