To improve recall and precision ratios of this system, vector match search rather than traditional boolean search, term weighing according to the importance of terms and output sorting are used.

• 该系统采用了与传统的布尔逻辑检索截然不同的矢量匹配检索,加上标引词按重要性被赋予权值,再排序输出,从而使检索的查全率有了提高。