在影响文献检索的查全率和查准率的诸因素中,标引质量是最关键的因素。但实践结果表明,标引的一致性相当低,这是提高检索效率的一大障碍。因此,如何提高标引的一致性,已经成为文献检索工作中的重要研究课题。我们从实践中体会到,标引中出现的不一致,固然部分是由于对文献所讨论的主题理解不同,标引的出发点和要求不同,以及专业的角度不同 Among the factors that influence the recall and accuracy of document retrieval, indexing quality is the most critical factor. However, the practice results show that the consistency of indexing is quite low, which is a big obstacle to improve the retrieval efficiency. Therefore, how to improve the consistency of indexing has become an important research topic in document retrieval. We have learned from practice that the inconsistencies in the indexing are due in part to the different understanding of the subject matter discussed in the literature, the different starting points and requirements of the indexing, and the different professional perspectives