海量图书馆档案信息的快速检索方法
2018-10-24陈春阳
陈春阳


摘 要: 海量图书馆档案信息的快速检索对实现图书馆的发展具有重要意义,成为加强图书馆档案管理工作的主要策略和发展方向。传统方法主要是利用图书馆档案信息的分类顺序进行分析,忽略了档案信息的查全率和查准率。因此,提出一种基于模糊集的海量图书馆档案信息快速检索方法。利用多个向量代表档案信息的对象,建立特征向量模型对图书馆档案信息进行处理,需要在数据库中对档案信息的语义索引和语义特征向量进行处理。在对图书馆档案信息处理完成的基础上,计算索引项在档案信息中的频率,并且计算索引项的大小来决定档案信息项位置的权重,对图书馆档案信息检索式进行量化和划分,并建立权重向量,获得档案信息向量,利用档案信息向量计算相似度函数,最终实现模糊集的图书馆档案信息快速检索方法。实验结果表明,所提方法具有查全率和查准率高的优点,对海量图书馆档案信息检索起到重要作用。
关键词: 图书馆档案信息; 快速检索; 模糊集; 分类顺序; 查全率; 查准率
中图分类号: TN911.2?34; TP311 文献标识码: A 文章编号: 1004?373X(2018)20?0042?03
Abstract: In the traditional method, the classification order of library archive information is mainly used for analysis, in which the recall rate and precision rate of archive information are ignored. Therefore, a rapid retrieval method of massive library archive information is proposed based on fuzzy sets, in which multiple vectors are used to represent the objects of archive information. The feature vector model is established to process library archive information, which needs to process the semantic indexes and semantic feature vectors of archive information in the database. On the basis of completion of library archive information processing, the frequency of the index item in archive information is calculated, and the size of the index item is calculated to determine the location weight of the archive information item. The retrieval formulas of library archive information are quantified and divided, and the weight vector is established, so as to obtain the archive information vector. The similarity function is calculated by using the archive information vector to realize the fuzzy set based rapid retrieval method of library archive information. The experimental results show that the proposed method has the advantages of high recall ratio and precision rate, which plays an important role in retrieval of massive library archive information.
Keywords: library archive information; rapid retrieval; fuzzy set; classification order; recall ratio; precision rate
0 引 言
在信息無序的社会中,有价值的档案信息和无价值的档案信息相互交错并且混乱,需要从海量的图书馆档案信息中检索出所需要的档案信息进行整理[1],这一方法成为人们研究的难题和热点,信息快速检索方法也是计算机科学与技术专业的重要学习方法。……
