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N-gram IDF

Proceedings of the 24th International Conference on World Wide Web, 2015
This paper first reveals the relationship between Inverse Document Frequency (IDF), a global term weighting scheme, and information distance, a universal metric defined by Kolmogorov complexity. We concretely give a theoretical explanation that the IDF of a term is equal to the distance between the term and the empty string in the space of information ...
Masumi Shirakawa   +2 more
openaire   +1 more source

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