附件中提供的代码是根据文章“Image Denoising Via Sparse and Redundant Representations Over Learned Dictionaries”编写的，整个程序分为两个阶段，第一，稀疏分解，第二，字典学习过程。在稀疏分解中采用的是正交匹配追踪算法（OMP），在字典学习过程中采用K次奇异值分解方法（SVD）更新字典原子。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001985s ]
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:0.085148s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002281s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001918s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002231s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003592s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001924s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003275s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014725s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002367s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 327312 [ RunTime:0.001162s ]
