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A study for extracting keywords from data with deep learning and suffix array

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Abstract

While a suffix index built on a suffix array is capable of supporting full-text searches over any data, its search speed can be accelerated using a keyword index for the set of keywords extracted from data. We attempt to design a method for extracting keywords from data using deep learning and a suffix array in this article. In particular, the study starts with Chinese texts because many word segmentation results on Chinese are available for performance evaluation. A new method combining the use of a neural network and a suffix array of training data is proposed for Chinese word segmentation. The suffix array of training data is constructed to divide long sentences in the input text into short fragments for better word segmentation by our neural network method without a context window. Our experiments on the typical datasets reveal that the proposed method achieves encouraging results in terms of the precision, recall and \(F_1\) score compared to other existing advanced methods while avoiding the drawback of a context window. This study provides some helpful experience for designing a general solution to extract keywords from data using a suffix array.

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Notes

  1. https://www.elastic.com/cn/blog/elastic-search-7-2-0-released

  2. http://sighan.cs.uchicago.edu/bakeoff2005/

  3. https://dumps.wikimedia.org/zhwiki/20210101/zhwiki-20210101-pages-articles-multistream.xml.bz2

  4. https://radimrehurek.com/gensim/index.html

  5. https://github.com/BYVoid/OpenCC

  6. https://github.com/fxsjy/jieba/

  7. https://catalog.ldc.upenn.edu/LDC2007T36

  8. https://github.com/lancopku/PKUSeg-python

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Acknowledgements

This work was funded by the National Natural Science Foundation of China (Grant number 61872391), the Special Funds for Guangzhou Scientific and Technological Innovation and Development (Grant number 201802010011).

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  1. School of Computer Science and Engineering, Sun Yat-sen University, Guangzhou, China

    Wentao Xu & Ge Nong

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  1. Wentao Xu
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Correspondence to Ge Nong.

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Xu, W., Nong, G. A study for extracting keywords from data with deep learning and suffix array. Multimed Tools Appl 81, 7419–7437 (2022). https://doi.org/10.1007/s11042-021-11762-7

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