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Performance is currently only beating linear (which is incredibly fast on modern processors) for exact search at > 1M features. This is probably beatable, but it will require some optimizations. Below is the list of optimizations and their issues that need to be made:
Performance is currently only beating linear (which is incredibly fast on modern processors) for exact search at > 1M features. This is probably beatable, but it will require some optimizations. Below is the list of optimizations and their issues that need to be made:
k-NN
packed_simd
to speed upFeatureHeap::add
search
module to use a hand-optimized iterator for each level of the treesearch
module can be sped up using SIMD or bit twiddlingswar
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