Hi Michael
Thanks very much for your feedback!
I have added a FAQ
https://cwiki.apache.org/confluence/display/LUCENE/LuceneFAQ#LuceneFAQ-DoesLucenesupportANN/kNNsearch?
and will update it when there will be more information available.
Thanks
Michael
Am 24.05.21 um 16:00 schrieb Michael McCandless:
Hi Michael,
I'll let others closer to the ongoing vectors developments answer with
more technical detail, but one high level answer:
The new ANN/kNN feature is not yet released! It will be in Lucene
9.0.0, when that is released (maybe soonish -- there is a running
thread about remaining 9.0 blockers
<https://markmail.org/thread/sga3dzbymnn5qdx4>). This is a major new
feature, requiring a new Codec component, and will not be backported
to Lucene 8.x.
Also, we already benchmark indexing/searching of vectors every night
in Lucene's nightly benchmarks
<https://home.apache.org/~mikemccand/lucenebench/> (hmm, they haven't
run for the past few nights ... I'll try to fix).
Mike McCandless
http://blog.mikemccandless.com <http://blog.mikemccandless.com>
On Sun, May 23, 2021 at 7:39 AM Michael Wechner
<michael.wech...@wyona.com <mailto:michael.wech...@wyona.com>> wrote:
Hi
If I understand correctly the source version of Lucene contains an
HNSW
implementation for k-nn search
https://issues.apache.org/jira/browse/LUCENE-9004
<https://issues.apache.org/jira/browse/LUCENE-9004>
and another algorithm based on coarse quantization is in development
https://issues.apache.org/jira/browse/LUCENE-9322
<https://issues.apache.org/jira/browse/LUCENE-9322>
Also there are various efforts to benchmark the Lucene HNSW
implementation according to
https://github.com/erikbern/ann-benchmarks
<https://github.com/erikbern/ann-benchmarks>
https://www.mail-archive.com/issues@lucene.apache.org/msg42711.html
<https://www.mail-archive.com/issues@lucene.apache.org/msg42711.html>
https://github.com/jtibshirani/lucene/pull/1
<https://github.com/jtibshirani/lucene/pull/1>
and
https://github.com/alexklibisz/ann-benchmarks-lucene
<https://github.com/alexklibisz/ann-benchmarks-lucene>
But what is not so clear to me is what is the current status of these
developments and what are the next steps planned?
Thanks
Michael
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