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

opensearch-project/opensearch-neural-sparse-encoding-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 31.1K
Corpus p50 57.0ms
Query TPS 3.2K
Query p50 52.8ms
Reference →

CosQA

technology retrieval en

Code search with natural language queries

Corpus: 6,267 Queries: 500
Performance L4 b1 c16
Corpus TPS 13.5K
Corpus p50 51.4ms
Query TPS 2.1K
Query p50 45.3ms
Reference →

FiQA2018

finance retrieval en

Financial opinion mining and question answering

Corpus: 57,599 Queries: 648
Performance L4 b1 c16
Corpus TPS 37.0K
Corpus p50 59.3ms
Query TPS 3.8K
Query p50 47.5ms
Reference →

LegalBenchConsumerContractsQA

legal retrieval en

Question answering on consumer contracts

Corpus: 153 Queries: 396
Performance L4 b1 c16
Corpus TPS 91.6K
Corpus p50 73.7ms
Query TPS 5.2K
Query p50 49.9ms
Reference →

NFCorpus

medical retrieval en

Biomedical literature search from NutritionFacts.org

Corpus: 3,593 Queries: 323
Quality
ndcg at 10 0.3373
map at 10 0.1278
mrr at 10 0.5548
Performance L4 b1 c16
Corpus TPS 61.6K
Corpus p50 68.8ms
Query TPS 1.6K
Query p50 49.3ms
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 42.4K
Corpus p50 60.4ms
Query TPS 3.5K
Query p50 49.6ms
Reference →

SciFact

scientific retrieval en

Scientific claim verification using research literature

Corpus: 5,183 Queries: 300
Performance L4 b1 c16
Corpus TPS 54.4K
Corpus p50 68.2ms
Query TPS 5.1K
Query p50 50.1ms
Reference →

StackOverflowQA

technology retrieval en

Programming question answering from Stack Overflow

Corpus: 19,931 Queries: 1,994
Performance L4 b1 c16
Corpus TPS 46.0K
Corpus p50 66.2ms
Query TPS 69.8K
Query p50 66.0ms
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.