jmazanec15 commented on issue #12615:
URL: https://github.com/apache/lucene/issues/12615#issuecomment-1915207682

   @kevindrosendahl This is really cool! I had a couple questions around 
product quantization implementation. I see in 
   
[VectorSandboxVamanaVectorsWriter](https://github.com/kevindrosendahl/lucene/blob/vamana2/lucene/core/src/java/org/apache/lucene/codecs/vectorsandbox/VectorSandboxVamanaVectorsWriter.java#L295),
 you create a new codebook for each segment. Do you know roughly how long it 
took to generate?  Also, how did you choose 6 iterations of k-Means? It seems 
from the results they look pretty promising - but just curious how you arrived 
there.


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