采用了基于加权向量空间法的信息过滤技术，对成员搜索引擎返回的结果进行过滤。
Make use of the technology of information filtering based on TFIDF to filter the results returned by the searching engine.
该系统改进了信息搜索引擎，实现了多线程分布启发式搜索策略，并提出了目标文本模糊搜索空间模型。
A search engine of document information is improved and a heuristic search strategy with multithreading and distributing is implemented. It introduces fuzzy retrieval model on the object documents.
然而，由于目前搜索引擎自身的局限性，使用关键字检索到的结果，仍然存在垃圾信息而造成时间和空间上的浪费。
However search engine has its own location, the result exists useless information because of using keywords searching, so resulting in wasting time and space.
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