Datamining - PowerPoint PPT Presentation

精确搜索

精确搜索. 邹权博士、助理教授 http://datamining.xmu.edu.cn. 介绍. 数据挖掘数据搜索（与数据库相关）数据分析（与机器学习相关）举例给定一段 DNA 序列，找出特定的基因在互联网中，找出与“刘德华、朱丽倩婚姻相关”的网页. 精确搜索. 最简单、也是最难的问题字符串精确匹配（ Exact String Matching ）问题可以描述如下：给定一个长字符串 T 和一个短字符串 P ，其中它们的长度分别是 |T|=m, |P|=n ，利用最理想的时间和空间找出全部的 T 中与 P 完全匹配的子串。

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540 views • 34 slides

Ecogrid &amp; Virtual Laboratory for e-Science

Ecogrid &amp; Virtual Laboratory for e-Science. from field observation to spatial knowledge. Willem Bouten, project leader Floris Sluiter, design &amp; implementation Guido van Reenen, data analysis Victor Mensing, Vlinderstichting Dirk Zoetebier, Sovon

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408 views • 26 slides

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Datamining - PowerPoint PPT Presentation

精确搜索

Ecogrid &amp;amp; Virtual Laboratory for e-Science

Ecogrid & Virtual Laboratory for e-Science