Chengxia Liu's scientific contributions
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It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
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Publication (1)
Textrank algorithm is an approach to exact keywords in articles which will be the premise to find useful information in massive network data. After analysing the characteristics of this algorithm, this paper improves the accuracy of keyword extraction by adding degree adverbs. Based on the function of the original algorithm, a degree adverb table i...
Citations
... The extracted keywords meet two conditions: (1) The keywords of learning resources appear more frequently in learning resources; (2) The keywords of learning resources appear more frequently in learning resources than in other resources. According to the two conditions, keyword extraction can be completed by the TextRank algorithm [28] or the TF-IDF algorithm [29]. The TF-IDF algorithm determines keywords through the positive correlation between occurrence frequency and importance but ignores the internal relationship between keywords. ...
