Ah, great. Thanks!
On Fri, Apr 16, 2021 at 10:57 AM Adrien Grand wrote:
> Hi,
>
> Indeed BMW is only about disjunctions but the paper (
> http://engineering.nyu.edu/~suel/papers/bmw.pdf) shortly describes how
> block max indexes can be used to speed up conjunctions as well using a
> simple algor
Hi,
Indeed BMW is only about disjunctions but the paper (
http://engineering.nyu.edu/~suel/papers/bmw.pdf) shortly describes how
block max indexes can be used to speed up conjunctions as well using a
simple algorithm that they call Block Max And, which we implemented in the
BlockMaxConjunctionScor
I was looking at the nightly benchmarks[1] and noticed a big jump in
performance for conjunction queries when LUCENE-8060 was merged. I was
puzzled because I didn't expect BMW to help in this type of queries, but I
guess that's the "other optimizations" you were talking about? Do you have
any point
Note that any other scoring mode (COMPLETE or COMPLETE_NO_SCORES) will
mandatorily visit all hits, so there is no scope of skipping and hence
no point of using impacts.
On Thu, Jul 11, 2019 at 8:51 AM Wu,Yunfeng wrote:
>
>
> @Adrien Grand mailto:jpou...@gmail.com>>. Thanks for your
> reply.
>
>
Block-max WAND and other optimizations that improve the retrieval of
top hits (block-max WAND is about disjunctions, but we have
optimizations for conjunctions, phrases and boolean queries that mix
MUST and SHOULD clauses too) are only applied when the score mode is
TOP_SCORES indeed.
The level in
@Adrien Grand mailto:jpou...@gmail.com>>. Thanks for your
reply.
The explanation ` skip low-scoring matches` is great, I looked up some docs
and inspect some related code.
I noticed the ` block-max WAND` mode only work when ScoreMode.TOP_SCORES is
used, is right? (The basic TermQuery wo
To clarify, the scoring process is not accelerated because we
terminate early but because we can skip low-scoring matches (there
might be competitive hits at the very end of the index).
CompetitiveImpactAccumulator is indeed related to WAND. It helps store
the maximum score impacts per block of do
