Short introduction to Vector Space Model (VSM) In information retrieval or text mining, the term frequency - inverse document frequency also called tf-idf, is
G. Feng, T. Liu, Y. Wang, Y. Bao, Z. Ma, X. Zhang, und W. Ma. Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR \textquotesingle06, ACM Press, (2006)
O. Alonso, J. Strötgen, R. Baeza-Yates, und M. Gertz. Proceedings of the 1st International Temporal Web Analytics Workshop, Volume 707 von CEUR Workshop Proceedings, Seite 1-8. CEUR-WS.org, (2011)
R. Jäschke, und S. Rudolph. Contributions to the 11th International Conference on Formal Concept Analysis, Seite 19--34. Technische Universität Dresden, (Mai 2013)