Redis Roaring

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R64.JACCARD ​

CategoryDescription
SyntaxR64.JACCARD key1 key2
Time complexityO(M)
Supports structuresBitmap64
Command descriptionRetrieves the Jaccard similarity coefficient of two Roaring keys. The higher the coefficient, the higher the similarity..

Parameter ​

  • key1: The name of the Roaring bitmap key.
  • key2: The name of the Roaring bitmap key.

Output ​

  • If the operation is successful, a double-typed Jaccard similarity coefficient is returned.
  • If both keys are empty -1 is returned.
  • Otherwise, an error message is returned.

Examples ​

Basic Usage ​

bash
$ redis-cli
127.0.0.1:6379> R64.SETINTARRAY foo1 1 2 3
OK

127.0.0.1:6379> R64.SETINTARRAY foo2 1 2 4
OK

R64.JACCARD foo1 foo2
"0.5"