Short introduction to Vector Space Model (VSM) In information retrieval or text mining, the term frequency - inverse document frequency also called tf-idf, is
P. Xia, S. Wu, and B. Van Durme. Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP), page 7516--7533. Association for Computational Linguistics, (November 2020)
Y. Han, and J. Tang. Proceedings of the 21th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 407--416. New York, NY, USA, ACM, (2015)
C. Wang, and D. Blei. Proceedings of the 17th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 448--456. New York, NY, USA, ACM, (2011)
K. Chan, I. King, and M. Yuen. Proceedings of the International Conference on Computational Science and Engineering, CSE '09, 4, page 1205--1210. (August 2009)