如何向用户提高准确高效的检索功能是民文数字图书馆的核心课题。在建立检索系统的过程中,索引的建立与检索优化是两个关键的技术,本文通过对索引建立和检索优化的研究,为民文数字图书馆检索系统的建设起到了基础作用。 How to improve the user’s accurate and efficient search function is the core issue of the digital text library. In the course of establishing the retrieval system, index establishment and retrieval optimization are two key technologies. This paper studies the index establishment and retrieval optimization, which plays a fundamental role in the construction of the retrieval system of the digital library.