Why did we open-source our inference engine? Read the post

opensearch-project/opensearch-neural-sparse-encoding-doc-v2-distill

The model should be selected considering search relevance, model inference and retrieval efficiency(FLOPS). We benchmark models' zero-shot performance on a subset of BEIR benchmark: TrecCovid,NFCorpus,NQ,HotpotQA,FiQA,ArguAna,Touche,DBPedia,SCIDOCS,FEVER,Climate FEVER,SciFact,Quora.

Architecture
DistilBERT
Parameters
67M
Tasks
Encode
Outputs
Sparse
Dimensions
Sparse: 30,522
Max Sequence Length
512 tokens
License
apache-2.0
Languages
en

Benchmarks

CQADupstackPhysicsRetrieval

scientific retrieval en

Duplicate question retrieval from StackExchange Physics

Corpus: 38,314 Queries: 1,039
Performance L4 b1 c16
Corpus 31.0K tok/s
Corpus p50 60.2ms
Query 4.1K tok/s
Query p50 41.5ms
Reference →

CosQA

technology retrieval en

Code search with natural language queries

Corpus: 6,267 Queries: 500
Performance L4 b1 c16
Corpus 17.8K tok/s
Corpus p50 46.4ms
Query 2.6K tok/s
Query p50 37.3ms
Reference →

FiQA2018

finance retrieval en

Financial opinion mining and question answering

Corpus: 57,599 Queries: 648
Performance L4 b1 c16
Corpus 43.5K tok/s
Corpus p50 56.2ms
Query 4.2K tok/s
Query p50 42.8ms
Reference →

LegalBenchConsumerContractsQA

legal retrieval en

Question answering on consumer contracts

Corpus: 153 Queries: 396
Performance L4 b1 c16
Corpus 104.9K tok/s
Corpus p50 72.6ms
Query 6.9K tok/s
Query p50 37.3ms
Reference →

NFCorpus

medical retrieval en

Biomedical literature search from NutritionFacts.org

Corpus: 3,593 Queries: 323
Quality
ndcg at 10 0.3398
map at 10 0.1303
mrr at 10 0.5489
Performance L4 b1 c16
Corpus 56.8K tok/s
Corpus p50 70.8ms
Query 1.8K tok/s
Query p50 41.7ms
Reference →

SCIDOCS

scientific retrieval en

Citation prediction, document classification, and recommendation for scientific papers

Corpus: 25,656 Queries: 1,000
Performance L4 b1 c16
Corpus 48.7K tok/s
Corpus p50 58.5ms
Query 4.7K tok/s
Query p50 37.7ms
Reference →

SciFact

scientific retrieval en

Scientific claim verification using research literature

Corpus: 5,183 Queries: 300
Performance L4 b1 c16
Corpus 60.2K tok/s
Corpus p50 66.4ms
Query 5.8K tok/s
Query p50 44.1ms
Reference →

StackOverflowQA

technology retrieval en

Programming question answering from Stack Overflow

Corpus: 19,931 Queries: 1,994
Performance L4 b1 c16
Corpus 49.6K tok/s
Corpus p50 70.8ms
Query 77.6K tok/s
Query p50 52.3ms
Reference →

Self-hosted inference for search & document processing

Cut API costs by 50x, boost quality with 85+ SOTA models, and keep your data in your own cloud.

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