Agile

最近在做数据统计,介绍两个好东东:) Mondrian 和Jpivot

Mondrian is an OLAP server written in Java. It enables you to interactively analyze very large datasets stored in SQL databases without writing SQL.

JPivot is a JSP custom tag library that renders an OLAP table and let users perform typical OLAP navigations like slice and dice, drill down and roll up. It uses Mondrian as its OLAP Server.

为了用它们，我硬着头皮看了看数据挖掘，昨天从网上找到了一个FP-TREE源代码，刚刚把它用到我们的数据上，但就是慢了点，45000多条数据分析将近用了两钟。我估计是从数据库中取数据慢了些，一会再调一下。

有段日子没写blog了，今天算是补一个吧:)

2007-09-03更新

刚刚发现，blogbus上传文件的空间增大，我正好在把这个源代码发上来，呵呵.

FP-tree源码下载(不只是fp_tree,还有其它的一些算法实现，希望对研究dm的朋友有用)