An Improved TextRank Keyword Extraction Method Based on the Watts-Strogatz Model
Journal Title: Information Dynamics and Applications - Year 2024, Vol 3, Issue 2
Abstract
Traditional methods for keyword extraction predominantly rely on statistical relationships between words, neglecting the cohesive structure of the extracted keyword set. This study introduces an enhanced method for keyword extraction, utilizing the Watts-Strogatz model to construct a word network graph from candidate words within the text. By leveraging the characteristics of small-world networks (SWNs), i.e., short average path lengths and high clustering coefficients, the method ascertains the relevance between words and their impact on sentence cohesion. A comprehensive weight for each word is calculated through a linear weighting of features including part of speech, position, and Term Frequency-Inverse Document Frequency (TF-IDF), subsequently improving the impact factors of the TextRank algorithm for obtaining the final weight of candidate words. This approach facilitates the extraction of keywords based on the final weight outcomes. Through uncovering the deep hidden structures of feature words, the method effectively reveals the connectivity within the word network graph. Experiments demonstrate superiority over existing methods in terms of precision, recall, and F1-measure.
Authors and Affiliations
Aofan Li, Lin Zhang, Ashim Khadka
Keywords
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- EP ID EP744287
- DOI https://doi.org/10.56578/ida030201
- Views 43
- Downloads 1
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