Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-27 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] In order to overcome the limitation of the absolute word frequency analysis of the keywords, the hot spots and trends in the field are explored by using the multi-factor weighting and ranking of the keywords.[Method/process] It constructs the annual-key frequency matrix, processes the word frequency of horizontal and vertical weighting, and derives the formula of relative word frequency to get the weighted comprehensive score of keywords, in order to obtain more effective keyword ranking.[Result/conclusion] Based on keyword weighted ranking, three types of keywords, including keywords in large quantities & high quality, keywords in little quantities & high quality, and burst terms, can be identified, greatly benefiting focus mining and trends analysis.
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