add normalization option

kakao / n2

TOROS N2 - lightweight approximate Nearest Neighbor library which runs fast even with large datasets

Apache License 2.0

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Closed js1010 closed 5 years ago

js1010 commented 6 years ago

One may need nearest neighbors based on the distance between "unnormalized" features.

This PR adds an option not to apply normalization when adding feature data to HnswIndex.