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NovaSearch/stella_en_1.5B_v5

Architecture
Parameters
1.5B
Tasks
Encode
Outputs
Dense
Dimensions
Dense: 1,024
Max Sequence Length
512 tokens
License

Benchmarks

CQADupstackPhysicsRetrieval

scientific retrieval en

Quality
ndcg at 10 0.5293
map at 10 0.4592
mrr at 10 0.5136
Performance L4 b1 c16
Corpus TPS 11.7K
Corpus p50 180.9ms
Query TPS 2.0K
Query p50 73.7ms

CosQA

technology retrieval en

Quality
ndcg at 10 0.3239
map at 10 0.2437
mrr at 10 0.2626
Performance L4 b1 c16
Corpus TPS 8.5K
Corpus p50 100.4ms
Query TPS 1.2K
Query p50 71.8ms

FiQA2018

finance retrieval en

Quality
ndcg at 10 0.6050
map at 10 0.5203
mrr at 10 0.6769
Performance L4 b1 c16
Corpus TPS 13.0K
Corpus p50 222.0ms
Query TPS 2.2K
Query p50 74.6ms

LegalBenchConsumerContractsQA

legal retrieval en

Quality
ndcg at 10 0.8108
map at 10 0.7641
mrr at 10 0.7653
Performance L4 b1 c16
Corpus TPS 16.7K
Corpus p50 522.2ms
Query TPS 2.7K
Query p50 84.9ms

NFCorpus

medical retrieval en

Quality
ndcg at 10 0.4170
map at 10 0.1630
mrr at 10 0.6201
Performance L4 b1 c16
Corpus TPS 12.8K
Corpus p50 406.0ms
Query TPS 1.0K
Query p50 70.5ms

NanoFiQA2018Retrieval

finance retrieval en

Quality
ndcg at 10 0.6555
map at 10 0.5859
mrr at 10 0.6764
Performance L4 b1 c16
Corpus TPS 1.2K
Corpus p50 1.5s
Query TPS 1.1K
Query p50 117.8ms

SCIDOCS

scientific retrieval en

Quality
ndcg at 10 0.2666
map at 10 0.1649
mrr at 10 0.4293
Performance L4 b1 c16
Corpus TPS 12.5K
Corpus p50 257.9ms
Query TPS 2.0K
Query p50 77.3ms

SciFact

scientific retrieval en

Quality
ndcg at 10 0.8004
map at 10 0.7557
mrr at 10 0.7662
Performance L4 b1 c16
Corpus TPS 12.8K
Corpus p50 356.8ms
Query TPS 3.0K
Query p50 80.0ms

StackOverflowQA

technology retrieval en

Quality
ndcg at 10 0.9134
map at 10 0.8970
mrr at 10 0.8970
Performance L4 b1 c16
Corpus TPS 14.2K
Corpus p50 265.9ms
Query TPS 15.6K
Query p50 329.0ms

Self-hosted inference for search & document processing

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Github
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