Model reference · open weights

SGPT-weightedmean-msmarco-specb-bitf

Available as managed deployment Embeddings Muennighoff · community Embeddings 1 variants 879 dl/mo

SGPT-weightedmean-msmarco-specb-bitf is an open-weight embedding model from Muennighoff. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.

Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.

What it is

Released byMuennighoff
TypeEmbedding models
TaskEmbeddings
Context2k tokens
Runs withsentence-transformers
Released2022-03-02
Popularity879 downloads / month
LicenceUnknown

About

What SGPT-weightedmean-msmarco-specb-bitf is

Usage

For usage instructions, refer to our codebase: https://github.com/Muennighoff/sgpt

Evaluation Results

For eval results, refer to the eval folder or our paper: https://arxiv.org/abs/2202.08904

Read the full model card

Training

The model was trained with the parameters:

DataLoader:

torch.utils.data.dataloader.DataLoader of length 15600 with parameters:

{'batch_size': 32, 'sampler': 'torch.utils.data.sampler.RandomSampler', 'batch_sampler': 'torch.utils.data.sampler.BatchSampler'}

Loss:

sentence_transformers.losses.MultipleNegativesRankingLoss.MultipleNegativesRankingLoss with parameters:

{'scale': 20.0, 'similarity_fct': 'cos_sim'}

Parameters of the fit()-Method:

{
    "epochs": 10,
    "evaluation_steps": 0,
    "evaluator": "NoneType",
    "max_grad_norm": 1,
    "optimizer_class": "",
    "optimizer_params": {
        "lr": 0.0002
    },
    "scheduler": "WarmupLinear",
    "steps_per_epoch": null,
    "warmup_steps": 1000,
    "weight_decay": 0.01
}

Full Model Architecture

SentenceTransformer(
  (0): Transformer({'max_seq_length': 300, 'do_lower_case': False}) with Transformer model: GPTNeoModel
  (1): Pooling({'word_embedding_dimension': 768, 'pooling_mode_cls_token': False, 'pooling_mode_mean_tokens': False, 'pooling_mode_max_tokens': False, 'pooling_mode_mean_sqrt_len_tokens': False, 'pooling_mode_weightedmean_tokens': True, 'pooling_mode_lasttoken': False})
)

Citing & Authors

@article{muennighoff2022sgpt,
  title={SGPT: GPT Sentence Embeddings for Semantic Search},
  author={Muennighoff, Niklas},
  journal={arXiv preprint arXiv:2202.08904},
  year={2022}
}

From the published model card. Full card on the HuggingFace links in the sidebar.

Benchmarks

Reported results

As published on the model card — the maker's own numbers, not measured by AxForge.

TaskDatasetMetricScore
ClassificationMTEB AmazonCounterfactualClassification (en)accuracy61.239
ClassificationMTEB AmazonCounterfactualClassification (en)ap25.854
ClassificationMTEB AmazonCounterfactualClassification (en)f155.752
ClassificationMTEB AmazonCounterfactualClassification (de)accuracy56.884
ClassificationMTEB AmazonCounterfactualClassification (de)ap72.673
ClassificationMTEB AmazonCounterfactualClassification (de)f154.450
ClassificationMTEB AmazonCounterfactualClassification (en-ext)accuracy58.276
ClassificationMTEB AmazonCounterfactualClassification (en-ext)ap14.067
ClassificationMTEB AmazonCounterfactualClassification (en-ext)f148.172
ClassificationMTEB AmazonCounterfactualClassification (ja)accuracy54.647
ClassificationMTEB AmazonCounterfactualClassification (ja)ap11.777
ClassificationMTEB AmazonCounterfactualClassification (ja)f144.527
ClassificationMTEB AmazonPolarityClassificationaccuracy65.401
ClassificationMTEB AmazonPolarityClassificationap60.228
ClassificationMTEB AmazonPolarityClassificationf165.025
ClassificationMTEB AmazonReviewsClassification (en)accuracy31.166
ClassificationMTEB AmazonReviewsClassification (en)f130.909
ClassificationMTEB AmazonReviewsClassification (de)accuracy24.790
ClassificationMTEB AmazonReviewsClassification (de)f124.583
ClassificationMTEB AmazonReviewsClassification (es)accuracy26.644
ClassificationMTEB AmazonReviewsClassification (es)f126.390
ClassificationMTEB AmazonReviewsClassification (fr)accuracy26.386
ClassificationMTEB AmazonReviewsClassification (fr)f126.277
ClassificationMTEB AmazonReviewsClassification (ja)accuracy22.078

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys sgpt-weightedmean-msmarco-specb-bitf for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (sgpt-weightedmean-msmarco-specb-bitf below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/embeddings \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"sgpt-weightedmean-msmarco-specb-bitf","input":"text to embed"}'

Create an account — your API key is available in the console. 3M free tokens every 30 days with every new account.

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