Hi Mirko, Thanks for sharing both the cloud and non-cloud test scenarios here!
Earlier today I merged a (one line) change for the https://issues.apache.org/jira/browse/SOLR-16952 issue. From reading this thread is appears that it could be correlated, as you mentioned, i.e. the 0.0 in "0.0 = not in top 3" might it arise from a "1.0" rather than 1.0 explanation input? If you were able to test with the SOLR-16952 change and share your findings that would be great. Thank you, Christine From: users@solr.apache.org At: 10/23/23 16:21:09 UTC+1:00To: users@solr.apache.org Subject: Re: knn query parser, number of results and filtering by score Hi! I tested this, and it seems the problem is related to Solr cloud mode. It works perfectly in a non-cloud setup. Here is the debug response: { "responseHeader":{ "status":0, "QTime":2, "params":{ "q":"{!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0]", "defType":"lucene", "indent":"true", "fl":"id,[explain],[shard],TESTEMBEDDING_EU_3", "q.op":"OR", "debug.explain.structured":"true", "debugQuery":"true", "useParams":"", "_":"1698059075615" } }, "response":{ "numFound":3, "start":0, "numFoundExact":true, "docs":[{ "id":"Position11", "TESTEMBEDDING_EU_3":[1.0,1.0,1.0], "[explain]":"1.0 = within top 3\n", "[shard]":"[not a shard request]" },{ "id":"Position10", "TESTEMBEDDING_EU_3":[0.9,0.9,0.9], "[explain]":"0.97087383 = within top 3\n", "[shard]":"[not a shard request]" },{ "id":"Position9", "TESTEMBEDDING_EU_3":[0.8,0.8,0.8], "[explain]":"0.89285713 = within top 3\n", "[shard]":"[not a shard request]" }] }, "debug":{ "rawquerystring":"{!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0]", "querystring":"{!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0]", "parsedquery":"KnnFloatVectorQuery(KnnFloatVectorQuery:TESTEMBEDDING_EU_3[1.0,.. .][3])", "parsedquery_toString":"KnnFloatVectorQuery:TESTEMBEDDING_EU_3[1.0,...][3]", "explain":{ "Position11":{ "match":true, "value":1.0, "description":"within top 3" }, "Position10":{ "match":true, "value":0.97087383, "description":"within top 3" }, "Position9":{ "match":true, "value":0.89285713, "description":"within top 3" } }, "QParser":"KnnQParser", "timing":{ "time":2.0, "circuitbreaker":{ "time":0.0 }, "prepare":{ "time":0.0, "query":{ "time":0.0 }, "facet":{ "time":0.0 }, "facet_module":{ "time":0.0 }, "mlt":{ "time":0.0 }, "highlight":{ "time":0.0 }, "stats":{ "time":0.0 }, "expand":{ "time":0.0 }, "terms":{ "time":0.0 }, "debug":{ "time":0.0 } }, "process":{ "time":1.0, "query":{ "time":0.0 }, "facet":{ "time":0.0 }, "facet_module":{ "time":0.0 }, "mlt":{ "time":0.0 }, "highlight":{ "time":0.0 }, "stats":{ "time":0.0 }, "expand":{ "time":0.0 }, "terms":{ "time":0.0 }, "debug":{ "time":1.0 } } } } } Please let me know where to file a bug report. Is it the Jira at issues.apache.org? Mirko Am 20.10.2023 um 12:09 schrieb Alessandro Benedetti: > I agree, you can definitely raise a bug for the debug, if you do me a > favour and also test in no Cloud mode, it will help us to understand if > it's a Solr bug or Lucene bug. > > I also agree with your second point about the functional expectations, that > is a very minor though, you can create the ticket and contribute a fix if > you like, happy to review it! > -------------------------- > *Alessandro Benedetti* > Director @ Sease Ltd. > *Apache Lucene/Solr Committer* > *Apache Solr PMC Member* > > e-mail: a.benede...@sease.io > > > *Sease* - Information Retrieval Applied > Consulting | Training | Open Source > > Website: Sease.io <http://sease.io/> > LinkedIn <https://linkedin.com/company/sease-ltd> | Twitter > <https://twitter.com/seaseltd> | Youtube > <https://www.youtube.com/channel/UCDx86ZKLYNpI3gzMercM7BQ> | Github > <https://github.com/seaseltd> > > > On Thu, 19 Oct 2023 at 17:51, Mirko Sertic <mirko.ser...@web.de> wrote: > >> I've prepared a testcase. Given the following documents with >> TESTEMBEDDING_EU_3 is a DenseVectorField with length 3 and euclidean >> distance function. They are written to a collection made of two shards >> with no further routing strategy, so they should be more or less evenly >> distributed between the two shards: >> >> { >> id: 'Position1', >> TESTEMBEDDING_EU_3: [0, 0, 0] >> } >> { >> id: 'Position2', >> TESTEMBEDDING_EU_3: [0.1, 0.1, 0.1] >> } >> { >> id: 'Position3', >> TESTEMBEDDING_EU_3: [0.2, 0.2, 0.2] >> } >> { >> id: 'Position4', >> TESTEMBEDDING_EU_3: [0.3, 0.3, 0.3] >> } >> { >> id: 'Position5', >> TESTEMBEDDING_EU_3: [0.4, 0.4, 0.4] >> } >> { >> id: 'Position6', >> TESTEMBEDDING_EU_3: [0.5, 0.5, 0.5] >> } >> { >> id: 'Position7', >> TESTEMBEDDING_EU_3: [0.6, 0.6, 0.6] >> } >> { >> id: 'Position8', >> TESTEMBEDDING_EU_3: [0.7, 0.7, 0.7] >> } >> { >> id: 'Position9', >> TESTEMBEDDING_EU_3: [0.8, 0.8, 0.8] >> } >> { >> id: 'Position10', >> TESTEMBEDDING_EU_3: [0.9, 0.9, 0.9] >> } >> { >> id: 'Position11', >> TESTEMBEDDING_EU_3: [1.0, 1.0, 1.0] >> } >> >> How I'll do a {!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0] query. >> I'd expect a result with 3 documents, id:Position11 should be an exact >> macht, and the nearst neighbors should be id:Position10 and >> id:Position9. I'd also expect that the explain logging should mark these >> tree as part of the topK=3. I get the following search result: >> >> { >> "responseHeader": { >> "zkConnected": true, >> "status": 0, >> "QTime": 35 >> }, >> "response": { >> "numFound": 6, >> "start": 0, >> "maxScore": 1.0, >> "numFoundExact": true, >> "docs": [ >> { >> "id": "Position11", >> "TESTEMBEDDING_3": [ >> "1.0", >> "1.0", >> "1.0" >> ], >> "[shard]": >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/ >> ", >> "[explain]": "0.0 = not in top 3\n", >> "score": 1.0 >> }, >> { >> "id": "Position10", >> "TESTEMBEDDING_3": [ >> "0.9", >> "0.9", >> "0.9" >> ], >> "[shard]": >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/ >> ", >> "[explain]": "0.0 = not in top 3\n", >> "score": 0.97087383 >> }, >> { >> "id": "Position9", >> "TESTEMBEDDING_3": [ >> "0.8", >> "0.8", >> "0.8" >> ], >> "[shard]": >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/ >> ", >> "[explain]": "0.0 = not in top 3\n", >> "score": 0.89285713 >> }, >> { >> "id": "Position8", >> "TESTEMBEDDING_3": [ >> "0.7", >> "0.7", >> "0.7" >> ], >> "[shard]": >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/ >> ", >> "[explain]": "0.0 = not in top 3\n", >> "score": 0.78740156 >> }, >> { >> "id": "Position7", >> "TESTEMBEDDING_3": [ >> "0.6", >> "0.6", >> "0.6" >> ], >> "[shard]": >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/ >> ", >> "[explain]": "0.0 = not in top 3\n", >> "score": 0.6756757 >> }, >> { >> "id": "Position6", >> "TESTEMBEDDING_3": [ >> "0.5", >> "0.5", >> "0.5" >> ], >> "[shard]": >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/ >> ", >> "[explain]": "0.0 = not in top 3\n", >> "score": 0.5714286 >> } >> ] >> }, >> "spellcheck": { >> "suggestions": [], >> "collations": [] >> }, >> "debug": { >> "track": { >> "rid": >> >> "fusion-integ-solr-search-200gb-1.fusion-integ-solr-search-200gb-headless-465214", >> "EXECUTE_QUERY": { >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/": >> >> { >> "QTime": "23", >> "ElapsedTime": "27", >> "RequestPurpose": "GET_TOP_IDS,SET_TERM_STATS", >> "NumFound": "3", >> "Response": "{responseHeader={zkConnected=true, status=0, >> QTime=23}, >> response={numFound=3,numFoundExact=true,start=0,maxScore=1.0,docs=[SolrDocument{ id=Position11, >> >> score=1.0}, SolrDocument{id=Position10, score=0.97087383}, >> SolrDocument{id=Position7, score=0.6756757}]}, sort_values={}, >> spellcheck={suggestions={!knn={numFound=0, startOffset=1, endOffset=5, >> suggestion=[]}, =testembedding_eu_3={numFound=0, startOffset=7, >> endOffset=26, suggestion=[]}, topk={numFound=16, startOffset=28, >> endOffset=32, suggestion=[topp, topf, took, tonk, tops, topik, topo, >> tock, tope, topa, topi, to k, tork, tolk, topb, topz]}, =3={numFound=0, >> startOffset=32, endOffset=34, suggestion=[]}, [1={numFound=0, >> startOffset=35, endOffset=37, suggestion=[]}, ,1={numFound=0, >> startOffset=39, endOffset=41, suggestion=[]}, ,1={numFound=0, >> startOffset=43, endOffset=45, suggestion=[]}}, >> collations={collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topp=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=topp}, >> collationInternalRank=0}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 topf=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=topf}, collationInternalRank=1000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> took=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=took}, >> collationInternalRank=2000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 tonk=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=tonk}, collationInternalRank=3000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> tops=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=tops}, >> collationInternalRank=4000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 topik=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=topik}, collationInternalRank=5000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topo=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=topo}, >> collationInternalRank=6000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 tock=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=tock}, collationInternalRank=7000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> tope=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=tope}, >> collationInternalRank=8000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 topa=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=topa}, collationInternalRank=9000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topi=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=topi}, >> collationInternalRank=10000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 to k=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=to k}, collationInternalRank=11000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> tork=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=tork}, >> collationInternalRank=12000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 tolk=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=tolk}, collationInternalRank=13000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topb=3}[1.0,1.0,1.0], hits=6, misspellingsAndCorrections={topk=topb}, >> collationInternalRank=14000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 topz=3}[1.0,1.0,1.0], hits=6, >> misspellingsAndCorrections={topk=topz}, collationInternalRank=15000}}, >> originalTerms=[!knn, =testembedding_eu_3, topk, =3, [1, ,1, ,1]}, >> debug={timing={time=23.0, prepare={time=0.0, query={time=0.0}, >> facet={time=0.0}, facet_module={time=0.0}, mlt={time=0.0}, >> highlight={time=0.0}, stats={time=0.0}, expand={time=0.0}, >> terms={time=0.0}, spellcheck={time=0.0}, debug={time=0.0}}, >> process={time=23.0, query={time=0.0}, facet={time=0.0}, >> facet_module={time=0.0}, mlt={time=0.0}, highlight={time=0.0}, >> stats={time=0.0}, expand={time=0.0}, terms={time=0.0}, >> spellcheck={time=23.0}, debug={time=0.0}}}}}" >> }, >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/": >> >> { >> "QTime": "24", >> "ElapsedTime": "29", >> "RequestPurpose": "GET_TOP_IDS,SET_TERM_STATS", >> "NumFound": "3", >> "Response": "{responseHeader={zkConnected=true, status=0, >> QTime=24}, >> response={numFound=3,numFoundExact=true,start=0,maxScore=0.89285713,docs=[SolrDo cument{id=Position9, >> >> score=0.89285713}, SolrDocument{id=Position8, score=0.78740156}, >> SolrDocument{id=Position6, score=0.5714286}]}, sort_values={}, >> spellcheck={suggestions={!knn={numFound=0, startOffset=1, endOffset=5, >> suggestion=[]}, =testembedding_eu_3={numFound=0, startOffset=7, >> endOffset=26, suggestion=[]}, topk={numFound=16, startOffset=28, >> endOffset=32, suggestion=[topp, took, topf, tops, topo, topik, tonk, >> tope, tock, to k, topi, tork, tolk, top5, topc, topka]}, =3={numFound=0, >> startOffset=32, endOffset=34, suggestion=[]}, [1={numFound=0, >> startOffset=35, endOffset=37, suggestion=[]}, ,1={numFound=0, >> startOffset=39, endOffset=41, suggestion=[]}, ,1={numFound=0, >> startOffset=43, endOffset=45, suggestion=[]}}, >> collations={collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topp=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=topp}, >> collationInternalRank=0}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 took=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=took}, collationInternalRank=1000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topf=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=topf}, >> collationInternalRank=2000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 tops=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=tops}, collationInternalRank=3000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topo=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=topo}, >> collationInternalRank=4000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 topik=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=topik}, collationInternalRank=5000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> tonk=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=tonk}, >> collationInternalRank=6000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 tope=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=tope}, collationInternalRank=7000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> tock=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=tock}, >> collationInternalRank=8000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 to k=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=to k}, collationInternalRank=9000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topi=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=topi}, >> collationInternalRank=10000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 tork=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=tork}, collationInternalRank=11000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> tolk=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=tolk}, >> collationInternalRank=12000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 top5=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=top5}, collationInternalRank=13000}, >> collation={collationQuery={!knn f=TESTEMBEDDING_EU_3 >> topc=3}[1.0,1.0,1.0], hits=5, misspellingsAndCorrections={topk=topc}, >> collationInternalRank=14000}, collation={collationQuery={!knn >> f=TESTEMBEDDING_EU_3 topka=3}[1.0,1.0,1.0], hits=5, >> misspellingsAndCorrections={topk=topka}, collationInternalRank=15000}}, >> originalTerms=[!knn, =testembedding_eu_3, topk, =3, [1, ,1, ,1]}, >> debug={timing={time=24.0, prepare={time=0.0, query={time=0.0}, >> facet={time=0.0}, facet_module={time=0.0}, mlt={time=0.0}, >> highlight={time=0.0}, stats={time=0.0}, expand={time=0.0}, >> terms={time=0.0}, spellcheck={time=0.0}, debug={time=0.0}}, >> process={time=24.0, query={time=0.0}, facet={time=0.0}, >> facet_module={time=0.0}, mlt={time=0.0}, highlight={time=0.0}, >> stats={time=0.0}, expand={time=0.0}, terms={time=0.0}, >> spellcheck={time=24.0}, debug={time=0.0}}}}}" >> } >> }, >> "GET_FIELDS": { >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/": >> >> { >> "QTime": "1", >> "ElapsedTime": "3", >> "RequestPurpose": "GET_FIELDS,GET_DEBUG,SET_TERM_STATS", >> "NumFound": "3", >> "Response": "{responseHeader={zkConnected=true, status=0, >> QTime=1}, >> response={numFound=3,numFoundExact=true,start=0,docs=[SolrDocument{id=Position9, >> >> TESTEMBEDDING_3=[0.8, 0.8, 0.8], >> [shard]= >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/, >> >> [explain]=0.0 = not in top 3\n, score=0.89285713}, >> SolrDocument{id=Position8, TESTEMBEDDING_3=[0.7, 0.7, 0.7], >> [shard]= >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/, >> >> [explain]=0.0 = not in top 3\n, score=0.78740156}, >> SolrDocument{id=Position6, TESTEMBEDDING_3=[0.5, 0.5, 0.5], >> [shard]= >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard2_replica_p17/|http://fusion-integ-solr -search-200gb-1.fusion-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas _2023_10_08_shard2_replica_p21/|http://fusion-integ-solr-analytics-200gb-0.fusio n-integ-solr-analytics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2 _replica_t13/|http://fusion-integ-solr-analytics-200gb-1.fusion-integ-solr-analy tics-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard2_replica_t15/, >> >> [explain]=0.0 = not in top 3\n, score=0.5714286}]}, >> debug={rawquerystring={!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0], >> querystring={!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0], >> parsedquery=KnnVectorQuery(KnnVectorQuery:TESTEMBEDDING_EU_3[1.0,...][3]), >> parsedquery_toString=KnnVectorQuery:TESTEMBEDDING_EU_3[1.0,...][3], >> explain={Position9={match=false, value=0.0, description=not in top 3}, >> Position8={match=false, value=0.0, description=not in top 3}, >> Position6={match=false, value=0.0, description=not in top 3}}, >> QParser=KnnQParser, timing={time=1.0, prepare={time=0.0, >> query={time=0.0}, facet={time=0.0}, facet_module={time=0.0}, >> mlt={time=0.0}, highlight={time=0.0}, stats={time=0.0}, >> expand={time=0.0}, terms={time=0.0}, spellcheck={time=0.0}, >> debug={time=0.0}}, process={time=0.0, query={time=0.0}, >> facet={time=0.0}, facet_module={time=0.0}, mlt={time=0.0}, >> highlight={time=0.0}, stats={time=0.0}, expand={time=0.0}, >> terms={time=0.0}, spellcheck={time=0.0}, debug={time=0.0}}}}}" >> }, >> " >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/": >> >> { >> "QTime": "1", >> "ElapsedTime": "3", >> "RequestPurpose": "GET_FIELDS,GET_DEBUG,SET_TERM_STATS", >> "NumFound": "3", >> "Response": "{responseHeader={zkConnected=true, status=0, >> QTime=1}, >> response={numFound=3,numFoundExact=true,start=0,docs=[SolrDocument{id=Position10 , >> >> TESTEMBEDDING_3=[0.9, 0.9, 0.9], >> [shard]= >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/, >> >> [explain]=0.0 = not in top 3\n, score=0.97087383}, >> SolrDocument{id=Position11, TESTEMBEDDING_3=[1.0, 1.0, 1.0], >> [shard]= >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/, >> >> [explain]=0.0 = not in top 3\n, score=1.0}, SolrDocument{id=Position7, >> TESTEMBEDDING_3=[0.6, 0.6, 0.6], >> [shard]= >> http://fusion-integ-solr-search-200gb-0.fusion-integ-solr-search-200gb-headless: 8983/solr/suchpool_atlas_2023_10_08_shard1_replica_p9/|http://fusion-integ-solr- analytics-200gb-1.fusion-integ-solr-analytics-200gb-headless:8983/solr/suchpool_ atlas_2023_10_08_shard1_replica_t7/|http://fusion-integ-solr-search-200gb-1.fusi on-integ-solr-search-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_r eplica_p11/|http://fusion-integ-solr-analytics-200gb-0.fusion-integ-solr-analyti cs-200gb-headless:8983/solr/suchpool_atlas_2023_10_08_shard1_replica_t5/, >> >> [explain]=0.0 = not in top 3\n, score=0.6756757}]}, >> debug={rawquerystring={!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0], >> querystring={!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0], >> parsedquery=KnnVectorQuery(KnnVectorQuery:TESTEMBEDDING_EU_3[1.0,...][3]), >> parsedquery_toString=KnnVectorQuery:TESTEMBEDDING_EU_3[1.0,...][3], >> explain={Position10={match=false, value=0.0, description=not in top 3}, >> Position11={match=false, value=0.0, description=not in top 3}, >> Position7={match=false, value=0.0, description=not in top 3}}, >> QParser=KnnQParser, timing={time=1.0, prepare={time=0.0, >> query={time=0.0}, facet={time=0.0}, facet_module={time=0.0}, >> mlt={time=0.0}, highlight={time=0.0}, stats={time=0.0}, >> expand={time=0.0}, terms={time=0.0}, spellcheck={time=0.0}, >> debug={time=0.0}}, process={time=0.0, query={time=0.0}, >> facet={time=0.0}, facet_module={time=0.0}, mlt={time=0.0}, >> highlight={time=0.0}, stats={time=0.0}, expand={time=0.0}, >> terms={time=0.0}, spellcheck={time=0.0}, debug={time=0.0}}}}}" >> } >> } >> }, >> "timing": { >> "time": 49.0, >> "prepare": { >> "time": 0.0, >> "query": { >> "time": 0.0 >> }, >> "facet": { >> "time": 0.0 >> }, >> "facet_module": { >> "time": 0.0 >> }, >> "mlt": { >> "time": 0.0 >> }, >> "highlight": { >> "time": 0.0 >> }, >> "stats": { >> "time": 0.0 >> }, >> "expand": { >> "time": 0.0 >> }, >> "terms": { >> "time": 0.0 >> }, >> "spellcheck": { >> "time": 0.0 >> }, >> "debug": { >> "time": 0.0 >> } >> }, >> "process": { >> "time": 47.0, >> "query": { >> "time": 0.0 >> }, >> "facet": { >> "time": 0.0 >> }, >> "facet_module": { >> "time": 0.0 >> }, >> "mlt": { >> "time": 0.0 >> }, >> "highlight": { >> "time": 0.0 >> }, >> "stats": { >> "time": 0.0 >> }, >> "expand": { >> "time": 0.0 >> }, >> "terms": { >> "time": 0.0 >> }, >> "spellcheck": { >> "time": 47.0 >> }, >> "debug": { >> "time": 0.0 >> } >> } >> }, >> "rawquerystring": "{!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0]", >> "querystring": "{!knn f=TESTEMBEDDING_EU_3 topK=3}[1.0,1.0,1.0]", >> "parsedquery": >> "KnnVectorQuery(KnnVectorQuery:TESTEMBEDDING_EU_3[1.0,...][3])", >> "parsedquery_toString": >> "KnnVectorQuery:TESTEMBEDDING_EU_3[1.0,...][3]", >> "QParser": "KnnQParser", >> "explain": { >> "Position11": { >> "match": false, >> "value": 0.0, >> "description": "not in top 3" >> }, >> "Position10": { >> "match": false, >> "value": 0.0, >> "description": "not in top 3" >> }, >> "Position9": { >> "match": false, >> "value": 0.0, >> "description": "not in top 3" >> }, >> "Position8": { >> "match": false, >> "value": 0.0, >> "description": "not in top 3" >> }, >> "Position7": { >> "match": false, >> "value": 0.0, >> "description": "not in top 3" >> }, >> "Position6": { >> "match": false, >> "value": 0.0, >> "description": "not in top 3" >> } >> } >> } >> } >> >> I got 6 search results. The top 3 of them are correct, and it seems that >> two shards were queried, the results were combined and sorted correctly >> by score. From my point of view is the result set size a functional bug, >> as I requested the topK=3, but I got 6. >> >> The explain data is completely random. The description is wrong, the >> match flag is wrong, and if value should be the score, it is also wrong. >> This is a bug in the explain implementation, and regarding to this a >> debug bug. >> >> Mirko >> >> Am 18.10.2023 um 16:56 schrieb Alessandro Benedetti: >>> Let's distinguish if you are talking about a "debug" bug (the explain >>> message) or a functional bug. >>> >>> -------------------------- >>> *Alessandro Benedetti* >>> Director @ Sease Ltd. >>> *Apache Lucene/Solr Committer* >>> *Apache Solr PMC Member* >>> >>> e-mail: a.benede...@sease.io >>> >>> >>> *Sease* - Information Retrieval Applied >>> Consulting | Training | Open Source >>> >>> Website: Sease.io <http://sease.io/> >>> LinkedIn <https://linkedin.com/company/sease-ltd> | Twitter >>> <https://twitter.com/seaseltd> | Youtube >>> <https://www.youtube.com/channel/UCDx86ZKLYNpI3gzMercM7BQ> | Github >>> <https://github.com/seaseltd> >>> >>> >>> On Wed, 18 Oct 2023 at 16:17, Mirko Sertic <mirko.ser...@web.de> wrote: >>> >>>> Am 18.10.2023 um 15:44 schrieb Alessandro Benedetti: >>>>> -------------------------- >>>>> *Alessandro Benedetti* >>>>> Director @ Sease Ltd. >>>>> *Apache Lucene/Solr Committer* >>>>> *Apache Solr PMC Member* >>>>> >>>>> e-mail: a.benede...@sease.io >>>>> >>>>> >>>>> *Sease* - Information Retrieval Applied >>>>> Consulting | Training | Open Source >>>>> >>>>> Website: Sease.io <http://sease.io/> >>>>> LinkedIn <https://linkedin.com/company/sease-ltd> | Twitter >>>>> <https://twitter.com/seaseltd> | Youtube >>>>> <https://www.youtube.com/channel/UCDx86ZKLYNpI3gzMercM7BQ> | Github >>>>> <https://github.com/seaseltd> >>>>> >>>>> >>>>> On Wed, 18 Oct 2023 at 15:32, Mirko Sertic <mirko.ser...@web.de> >> wrote: >>>>>> Hi Alessandro, >>>>>> thank you for clarification! I havent't read something about "topK is >>>>>> per shard" in the documentation, but maybe I've missed that somewhere. >>>>>> From a performance and implementation perspective, this might make >>>>>> sense. From a users perspective, I'd expect that "topK" is per >>>>>> collection, and not per shard, so the same behavior as "rows". I >>>>>> should't have to think about the collection data layout while >>>>>> formulating queries and interpreting the layouts. >>>>>> Now, if "topK" is per shard, we assume that good matching results are >>>>>> evenly distributed among the shards. This might not be always the >> case. >>>>>> If we use features like collapse & expand, block/join or explicit >>>>>> document routing strategies, this might lead to strange results. In >> this >>>>>> case, it might be better to retrieve the topK per shard, join them all >>>>>> together and sort them by score, and take topK from that sorted list >> to >>>>>> get the correct overall topK. What do you think about that? >>>>>> >>>>> That is what currently *should* happen. >>>>> You can select the number of rows you like and get a subset of the >>>>> NShards*K results. >>>>> Are you observing something different? >>>> Yes, if this does work correct, there should be no "not in top x" in >>>> explain logs, but I see them, so I assume there is a bug somewhere. >>>> >>>>>> We've also found https://issues.apache.org/jira/browse/SOLR-16952, >>>> which >>>>>> might be correlated. >>>>>> >>>>> That seems to me like a bug for the stored fields functionality. >>>>> >>>>> >>>>>> I also tried to understand >>>>>> >>>>>> >> https://github.com/apache/lucene/blob/723c05b047b4a66105636162bb3e0daaf2cc1de5/l ucene/core/src/java/org/apache/lucene/search/AbstractKnnVectorQuery.java#L337 >>>> , >>>>>> but failed to get the details. >>>>>> >>>>>> I oberved the explain data further. Every document gets a score, which >>>>>> is the result of the similarity function. However, some of them are >>>>>> marked with "not in top 6 docs". So from my point of view those whould >>>>>> not be part of the search result. >>>>>> >>>>> Can you elaborate on this? maybe through a full query and response with >>>> the >>>>> debug? >>>>> Anyway, the debug score for vector-based search is currently almost >>>>> useless, the score is not really explained. >>>>> We know this and it's a Lucene level 'problem' (we haven't worked yet >> on >>>> a >>>>> better way for doing it, is your company interested in sponsoring maybe >>>> :) ) >>>>>> Mirko >>>>>> >>>>>> Am 17.10.2023 um 18:16 schrieb Alessandro Benedetti: >>>>>>> Hi Mirko, >>>>>>> the topK is per shard. >>>>>>> Then shards * k results are aggregated. >>>>>>> Does it make sense? >>>>>>> >>>>>>> In regards to the debugging, it seems a bug, they all should be with >> a >>>>>>> score and within top-k >>>>>>> -------------------------- >>>>>>> *Alessandro Benedetti* >>>>>>> Director @ Sease Ltd. >>>>>>> *Apache Lucene/Solr Committer* >>>>>>> *Apache Solr PMC Member* >>>>>>> >>>>>>> e-mail:a.benede...@sease.io >>>>>>> >>>>>>> >>>>>>> *Sease* - Information Retrieval Applied >>>>>>> Consulting | Training | Open Source >>>>>>> >>>>>>> Website: Sease.io<http://sease.io/> >>>>>>> LinkedIn<https://linkedin.com/company/sease-ltd> | Twitter >>>>>>> <https://twitter.com/seaseltd> | Youtube >>>>>>> <https://www.youtube.com/channel/UCDx86ZKLYNpI3gzMercM7BQ> | Github >>>>>>> <https://github.com/seaseltd> >>>>>>> >>>>>>> >>>>>>> On Tue, 17 Oct 2023 at 10:41, Mirko Sertic<mirko.ser...@web.de> >>>> wrote: >>>>>>>> Hey! >>>>>>>> >>>>>>>> Thank you for your help! >>>>>>>> >>>>>>>> We are running in cloud mode on GKE. Our index has 2 shards, and >> every >>>>>>>> shard has 2 replicas. The leader is a TLOG, the other replica is a >>>> PULL. >>>>>>>> Our main query is basically {!knn f=VECTOR_FIELD topK=10}[VECTOR >>>> DATA]. >>>>>>>> Thats it. >>>>>>>> >>>>>>>> I am really unsure how to debug this issue, Solr explain only gives >>>> some >>>>>>>> basic information. I really do not understand why I am getting more >>>> than >>>>>>>> topK=10 search results, and some of them do not match according to >> the >>>>>>>> explain data. >>>>>>>> >>>>>>>> Here is an example debug log of the parsed query: >>>>>>>> >>>>>>>> "rawquerystring" : "{!knn f=TEXTEMBEDDINGS_BESCHREIBUNG_768 >>>>>>>> >> topK=6}[-0.72818565,-0.41219202,0.5225889,0.53035444,0.76394194,0.7767894,0.8207 3385,0.95900697,-0.36803666,-0.21959017,0.7140104,-0.13439204,0.06747756,1.33331 43,0.2797215,1.3020324,0.13869889,-0.10991136,0.21142228,-0.36915645,-0.15180133 ,-0.62384933,-0.51568866,0.23904686,-0.61362225,0.026911864,0.36433217,-0.644379 9,0.86989623,-0.0058394694,0.360967,-0.39565668,0.4483029,-0.26269752,0.24516392 ,0.44815013,0.43040967,0.3587644,0.873287,-0.10215642,-0.25633913,-0.21385787,-0 .5121543,-0.103228725,0.3895751,-0.49162507,-0.9432531,-0.5980949,0.63356507,-0. 40455475,0.9550473,0.7282631,-0.031743232,0.439844,0.21040638,-0.36207297,0.2201 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5677915,-0.29935122,-0.42017272,-0.80567694,0.2868536,-0.40015128,-0.060443062,- 0.21671702,0.18321274,-0.20112215,-0.50728095,0.3698101,0.56871736,-0.0904237,-0 .43735075,-0.79018253,-0.0739331,0.49475756,0.014863159,-0.47107005,0.14020085,0 .28982484,0.32168245,-0.56485337,0.17436136,-0.0050138533,-0.9533212,0.036251593 ,-0.33072975,-0.87562966,-0.4379939,0.8052754,0.30534235,0.20573251]", >>>>>>>> "parsedquery" : >>>>>>>> >> "KnnVectorQuery(KnnVectorQuery:TEXTEMBEDDINGS_BESCHREIBUNG_768[-0.72818565,...][6])", >>>>>>>> "parsedquery_toString" : >>>>>>>> >> "KnnVectorQuery:TEXTEMBEDDINGS_BESCHREIBUNG_768[-0.72818565,...][6]", >>>>>>>> "QParser" : "KnnQParser", >>>>>>>> >>>>>>>> Am 17.10.2023 um 10:05 schrieb Alessandro Benedetti: >>>>>>>>> What's your full Solr query? >>>>>>>>> Are you on SolrCloud or single Solr node? >>>>>>>>> -------------------------- >>>>>>>>> *Alessandro Benedetti* >>>>>>>>> Director @ Sease Ltd. >>>>>>>>> *Apache Lucene/Solr Committer* >>>>>>>>> *Apache Solr PMC Member* >>>>>>>>> >>>>>>>>> e-mail:a.benede...@sease.io >>>>>>>>> >>>>>>>>> >>>>>>>>> *Sease* - Information Retrieval Applied >>>>>>>>> Consulting | Training | Open Source >>>>>>>>> >>>>>>>>> Website: Sease.io<http://sease.io/> >>>>>>>>> LinkedIn<https://linkedin.com/company/sease-ltd> | Twitter >>>>>>>>> <https://twitter.com/seaseltd> | Youtube >>>>>>>>> <https://www.youtube.com/channel/UCDx86ZKLYNpI3gzMercM7BQ> | >>>> Github >>>>>>>>> <https://github.com/seaseltd> >>>>>>>>> >>>>>>>>> >>>>>>>>> On Tue, 17 Oct 2023 at 09:45, Mirko Sertic<mirko.ser...@web.de> >>>>>> wrote: >>>>>>>>>> To correct me, there was a typo. I meant: >>>>>>>>>> >>>>>>>>>> If I specify topK=6, I get numFound=12, but only some of them >> match >>>>>> the >>>>>>>>>> top 6 >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Am 17.10.2023 um 09:31 schrieb Mirko Sertic: >>>>>>>>>>> Hi! >>>>>>>>>>> >>>>>>>>>>> To keep you updated, here are some observations regarding the >>>>>>>>>>> numFound/resultset size and DenseVectorQueries: >>>>>>>>>>> >>>>>>>>>>> If I specity topK=10, I get numFound=20, but only some of them >>>> match >>>>>>>> the >>>>>>>>>>> top 10 >>>>>>>>>>> >>>>>>>>>>> If I specify topK=8, I get numFound=16, but only some of them >> match >>>>>> the >>>>>>>>>>> top 8 >>>>>>>>>>> >>>>>>>>>>> If I specify topK=6, I get numFound=8, but only some of them >> match >>>>>> the >>>>>>>>>>> top 6 >>>>>>>>>>> >>>>>>>>>>> So the numFound seems always to be the double of topK. Might >> there >>>>>> be a >>>>>>>>>>> correlation with sharding? Our collection has two shards, so does >>>>>> this >>>>>>>>>>> double the results? I would't expect that, but that might be the >>>> only >>>>>>>>>>> thing relating to a constant 2 in our setup. >>>>>>>>>>> >>>>>>>>>>> Mirko >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Am 16.10.2023 um 14:46 schrieb Mirko Sertic: >>>>>>>>>>>> Hi@all >>>>>>>>>>>> >>>>>>>>>>>> We are using Solr 9.1.1, and are trying usecases with >> DenseVector >>>>>>>> Fields >>>>>>>>>>>> and knnQueries in mind. >>>>>>>>>>>> >>>>>>>>>>>> During our tests, we see the following results and are trying to >>>>>>>> figure >>>>>>>>>>>> out what is going on: >>>>>>>>>>>> >>>>>>>>>>>> a) We use the following main query : {!knn f=VECTOR_FIELD >>>>>>>>>>>> topK=10}[VECTOR DATA]. We use it as a main query because we want >>>> to >>>>>>>>>>>> apply the distance function to the document score. However, >> when I >>>>>> try >>>>>>>>>>>> do debug and explain the search results, I am getting more than >>>>>>>> topK=10 >>>>>>>>>>>> result documents, some are marked as match = true with "within >> top >>>>>>>> 10", >>>>>>>>>>>> others are marked as match = false with "not in top 10". I'd >>>> expect >>>>>>>> that >>>>>>>>>>>> only matched documents are part of the search result, but there >>>> are >>>>>> 20 >>>>>>>>>>>> result documents, but only 5 of them are matched. Did I miss >>>>>>>> something? >>>>>>>>>>>> b) The knn query results are the approximate nearest neighbors, >>>> but >>>>>>>> they >>>>>>>>>>>> might not be the best. We'd like to define some kind of cut-off >>>>>> value >>>>>>>>>>>> for knn document scores. Is this possible, and what would be a >>>> good >>>>>>>> day >>>>>>>>>>>> to do so? Implement a post-processing filter query with an >> frange >>>> on >>>>>>>> the >>>>>>>>>>>> score field? >>>>>>>>>>>> >>>>>>>>>>>> Thank you all, >>>>>>>>>>>> >>>>>>>>>>>> Mirko >>>>>>>>>>>>