六十年代以来我国标引深度研究综述

SUMMARY OF THE INDEXING DEPTH SINCE 1960s

本文综述了６０年代以来我国标引深度研究的主要问题，包括：①标引深度的涵义；②标引深度的计算和度量；③标引深度与检索效率，④标引深度的控制等一系列问题。

s The main problems of indexing depth since 1960s are summarized in this paper,including the implications,calculation and control of indexing depth,the indexing depth versus retrieval ratio,and so on.