New version of patch with readme and some bugfixes.
Some new tests with fast build parameters variations are on the wiki page. While I doubt to interpret some results of tests, because it looks strange for me. I particular I can't explain why decrease of buffer size affects index quality so much (in my expectation decrease of buffer size should make all build parameters closer to regular build). I'm going to recheck my experiments, probably I'm missing something.
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With best regards,
Alexander Korotkov.