sed和awk是一般用户，程序员和系统管理员们处理文本文件的有力工具。本书重点是编写sed和awk脚本来快速解决用户各种各样的问题。-sed and awk is a powerful tool for general users, programmers and system administrators who work with text files. The book focus is to write sed and awk scr ipts to quickly resolve th

基于文本相似度计算的文本聚类算法研究与实现，这是中文信息处理的重要分支。-The text clustering algorithm based on text similarity computing research and implementation, this is an important branch of Chinese information processing.