基于Lotka-Volterra捕食者-猎物模型的概念间相关关系研究  

Research on associative relationship of concepts based on Lotka-Volterra Predator-Prey Model

作　　者：郑影 常春[1] ZHENG Ying;CHANG Chun(Institute of Scientific and Technical Information of China,Beijing 100038,China)

机构地区：[1]中国科学技术信息研究所,北京100038

出　　处：《中华医学图书情报杂志》2022年第12期7-13,共7页Chinese Journal of Medical Library and Information Science

基　　金：2019年科技基础资源调查专项“汉语主题词表(生物医学农业卷)编制标准、平台构建及词表融合”(2019FY202401)。

摘　　要：目的:相关关系是叙词表中一种重要的概念关系。对具有相关关系的概念间属性进行研究,对叙词表相关关系的构建和更新维护有重要意义。方法:假设具有“捕食”关系的概念数量变化符合生态学中Lotka-Volterra捕食者-猎物模型,以农业领域中一个主题概念为起点,获取相关关系概念网络,在对各组相关关系进行判断之后,在中国知网(CNKI)中获取各个概念2000-2021年历年文献量,使用SPSS软件对数据进行统计分析。结果:80%具有“捕食”关系的概念符合Lotka-Volterra捕食者-猎物模型。结论:可通过概念间词频的关系来为叙词表的编制和维护工作提供参考建议。Objective The associative relationship plays a key role in thesaurus,and the research on the attributes of concepts with associative relationship is of great significance to the construction,updating and maintenance of associative relationship in thesaurus.Methods Assuming that the variation in the number of concepts with"predator"relationship fit the Lotka-Volterra predator-prey model in ecology,the concept network of associative relationship was obtained starting from a topic concept in the agricultural field.After the associative relationship of each group was determined,the literature volume of each concept from 2000 to 2021 was obtained from CNKI,and the data were statistically analyzed by SPSS software.Results 80%of the concepts with“predator”relationship fit the Lotka-Volterra predator-prey model.Conclusion The relationship of word frequency between concepts can provide a reference for the compilation and maintenance of thesaurus.

关 键 词：LOTKA-VOLTERRA模型 捕食关系 叙词表 概念 词频 

分 类 号：G254.2[文化科学—图书馆学] G254.0