A particle is treated as a whole individual in all researches on particle swarm optimization (PSO) currently, these are not concerned with the information of every particle's dimensional vector. A visual modeling method describing particle's dimensi
在windows下，使用hadoop-1.0.4自带的hadoop-core-1.0.4.jar时，会抛出权限异常：cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Administrator\mapred\staging\Administrator-2070047262\.staging to 0700 上述jar包，是修改了源码FileUtil.java后，编译得到的hadoop-core-1
图像编码，this paper presents a modified block truncation coding(BTC) algorithm for image compression.Similar block in an image are mergrd intoa cluster and represented with the cluster center.
在 Blog 盛行的今天,一些 Web 应用需要解析大量的 RSS Feed .如何提高效率是个非常重要的问题．在 MagpieRSS 的 Features 中列举了这样的一条： HTTP Conditional GETs Save bandwidth and speed up download times with intelligent use of Last-Modified and ETag.. 这里的 Etag 引起了我的注意．
什么是 Etag ?
通过阅读 RFC 2616 ,
