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Add minhash token filter #20345

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softwaredoug opened this issue Sep 6, 2016 · 2 comments
Closed

Add minhash token filter #20345

softwaredoug opened this issue Sep 6, 2016 · 2 comments

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@softwaredoug
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softwaredoug commented Sep 6, 2016

It would be nice to be able to use the minhash token filter, using minHash token filter added to Lucene.

The minhash algorithm implements locality-sensitive hashing. Basically, every token is hashed into a hash table. The hash table is then sampled to generate a smaller set of representative tokens.

This has several applications

  • Dimensionality reduction that preserves information that can be used in similarity calculations. For example, efficient deduplication over large sets of text, more like this, etc.
@softwaredoug
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weird this wasn't linked, associated PR

@jasontedor
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Duplicates #20149

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