基于主题模型的南水北调东线工程学术关注点研究

Finding academic concerns of South-to-North Water Transfer East Route Project based on topic modeling approach

通过搜集从2003年到2016年与南水北调东线工程相关的1 405篇中文文献,借助LDA主题模型总共识别出13个有效主题,分别为"工程施工""泵站运行优化""水泵性能研究""工程成本研究""水环境模型""河流水污染""信息自动化""湖泊富营养化""水体污染物""水泵结构计算""水泵水力计算""生态学"和"生态环境治理",并对各主题的内容进行了分析,揭示出其内在的知识结构.然后使用了2个文献计量指标(主题占比和主题演变趋势)来描述南水北调东线工程的学术关注情况,发现"工程施工"为最热门主题,其次是"泵站运行优化"和"水泵性能研究".而"水环境模型"和"湖泊富营养化"正逐渐成为研究热点.结果反映了学术界的关注情况,也为南水北调东线工程的后评价提供了决策依据.

From 2003 to 2016,a total of 13 valid topics were identified by LDA（ latent dirichlet allocation） topic model through the collection of 1405 Chinese documents related to the South-to-North Water Transfer East Route Project. The topics include ＂ engineering construction＂, ＂ pump station operation optimization＂, ＂ water pump performance study＂, ＂ engineering cost research＂, ＂ water environment model＂, ＂ river water pollution＂, ＂ information automation＂, ＂ lake eutrophication＂, ＂ water pollutant＂, ＂pump structure calculation＂, ＂ pump hydraulic calculation ＂, ＂ ecology ＂ and ＂ ecological environment management＂. Two novel bibliometric indicators,including topic proportion and trend,were constructed to describe the academic concerns of the South-to-North Water Transfer East Route Project,finding that ＂ engineering construction＂ is the most popular topic,followed by ＂ pump station operation optimization＂ and ＂ water pump performance study＂. However the ＂ water environment model＂ and ＂ lake eu-trophication＂ are becoming a hot topic. The results reflect the attention of the academic circles and provide the basis for the post-evaluation of the South-to-North Water Transfer East Route Project.