Gzip versus bag-of-words for text classification with KNN

07/27/2023

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by   Juri Opitz, et al.

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The effectiveness of compression distance in KNN-based text classification ('gzip') has recently garnered lots of attention. In this note we show that simpler means can also be effective, and compression may not be needed. Indeed, a 'bag-of-words' matching can achieve similar or better results, and is more efficient.