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Elastic Docs ›Elasticsearch Guide [5.0] ›Analysis ›Token Filters

Minhash Token Filter

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Minhash Token Filter

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A token filter of type min_hash hashes each token of the token stream and divides the resulting hashes into buckets, keeping the lowest-valued hashes per bucket. It then returns these hashes as tokens.

The following are settings that can be set for a min_hash token filter.

Setting Description

hash_count

The number of hashes to hash the token stream with. Defaults to 1.

bucket_count

The number of buckets to divide the minhashes into. Defaults to 512.

hash_set_size

The number of minhashes to keep per bucket. Defaults to 1.

with_rotation

Whether or not to fill empty buckets with the value of the first non-empty bucket to its circular right. Only takes effect if hash_set_size is equal to one. Defaults to true if bucket_count is greater than one, else false.
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