Super Fast String Matching in Python

bergvca.github.io

Traditional approaches to string matching such as the Jaro-Winkler or Levenshtein distance measure are too slow for large datasets. Using TF-IDF with N-Grams as terms to find similar strings transforms the problem into a matrix multiplication problem, which is computationally much cheaper. Using this approach made it possible to search for near duplicates in a set of 663,000 company names in 42 minutes using only a dual-core laptop.

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