该文主要对移动日志数据库不断更新的问题，提出了增量挖掘的方法，挖掘用户的移动模式。
An incremental mining technique is proposed in order to solve the problem of frequent updating of moving log database and mine the user mobility patterns.
用户查询日志是大量用户长期查询行为的记录，通过挖掘用户查询与用户日志之间的联系，构建相关词表，从而实现查询扩展。
Query log is a record of query behavior by a great quantity of users, it can Fred the related word list through mining the relation between query and query log, thus to realize the query extension.
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