TF-IDF了解
摘要：
http://en.wikipedia.org/wiki/Tf%E2%80%93idf 阅读全文
posted @ 2014-12-13 14:04 Stomach_ache 阅读(103) 评论(0) 推荐(0) 编辑
Linux 命令之head, tail, tr, sort, uniq, grep
摘要：
head [filename]head -n 11 [filename] -> First 11 lines head -c 20 [filename] -> First 20 characters head默认为显示前10行。tail [filename]tail -n 11 [filena... 阅读全文
posted @ 2014-12-13 12:43 Stomach_ache 阅读(416) 评论(0) 推荐(0) 编辑
