摘要： 独立搜索引擎的选择策略是实现面向主题元搜索引擎的关键技术之一,独立搜索引擎序列的优劣直接影响整个系统的性能。由于每个独立搜索引擎各个方面存在着差异,它们的性能时刻变化,很难对独立搜索引擎序列进行具体的数值上的评测。利用改进后的遗传算法可以根据各个独立搜索引擎性能的变化动态调整独立搜索引擎序列,从而使系统具有较好的自适应性。

关键词: 元搜索引擎, 面向主题, 遗传算法

Abstract: The selecting strategy of independent search engines(ISE) is the key to the topic-oriented meta search engine(MSE), the sequence of ISE affects the system performance directly. But it is difficult to evaluate ISE by detailed data, because every ISE are different in lots aspects and mutative with time’s going. The sequence can be changed dynamic with the change of ISE by the improved genetic algorithms (GA), it makes the system has good adaptability.

中图分类号: 

• TP393