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CAGRA binary Hamming distance support #610

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@enp1s0 enp1s0 commented Jan 24, 2025

This PR adds the binary Hamming distance support to CAGRA.

TODO:

  • Add Hamming distance dist_op for CAGRA search
    • Add DistanceType::BinaryHamming (because HammingUnexpanded is not bitwise operation)
  • Support graph build
    • Want to use the iterative graph build method that uses the CAGRA search for graph build (anaruse@5a80659) because otherwise the binary Hamming distance support for IVFPQ or NN Descent is additionally required.
  • Add CI test
    • GT creation
    • Add test cases
  • Test on some benchmark datasets

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@enp1s0 enp1s0 self-assigned this Jan 24, 2025
@enp1s0 enp1s0 added feature request New feature or request non-breaking Introduces a non-breaking change labels Jan 24, 2025
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