Yun Ni created SPARK-18454:
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Summary: Changes to fix Multi-Probe Nearest Neighbor Search for LSH
Key: SPARK-18454
URL: https://issues.apache.org/jira/browse/SPARK-18454
Project: Spark
Issue Type: Improvement
Reporter: Yun Ni
We all agree to do the following improvement to Multi-Probe NN Search:
(1) Use approxQuantile to get the {{hashDistance}} threshold instead of doing
full sort on the whole dataset
Currently we are still discussing the following:
(1) What {{hashDistance}} (or Probing Sequence) we should use for {{MinHash}}
(2) How we should change the current MultiProbe implementation to make it align
with the MultiProbe NN Search from the origin paper:
http://www.cs.princeton.edu/cass/papers/mplsh_vldb07.pdf
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