The research of types of information retrieval includes focused retrieval, image retrieval, video retrieval, and cooperation filtering, machine transliteration and wireless mesh community network.

• 有关特征选择的研究；有关领域相关词的研究。信息检索类型的研究主要包括焦点检索、图像检索、视频检索、合作过滤、机器音译、无线网中网。