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 TPS 31.0K
Corpus p50 60.2ms
Query TPS 4.1K
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 TPS 17.8K
Corpus p50 46.4ms
Query TPS 2.6K
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 TPS 43.5K
Corpus p50 56.2ms
Query TPS 4.2K
Query p50 42.8ms
Reference →

LegalBenchConsumerContractsQA

legal retrieval en

Question answering on consumer contracts

Corpus: 153 Queries: 396
Performance L4 b1 c16
Corpus TPS 104.9K
Corpus p50 72.6ms
Query TPS 6.9K
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 TPS 56.8K
Corpus p50 70.8ms
Query TPS 1.8K
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 TPS 48.7K
Corpus p50 58.5ms
Query TPS 4.7K
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 TPS 60.2K
Corpus p50 66.4ms
Query TPS 5.8K
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 TPS 49.6K
Corpus p50 70.8ms
Query TPS 77.6K
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.