yosefw / SPLADE-BERT-Tiny-distil-v5

SPLADE-BERT-Tiny-Distil

This is a SPLADE Sparse Encoder model finetuned from prajjwal1/bert-tiny using the sentence-transformers library. It maps sentences & paragraphs to a 30522-dimensional sparse vector space and can be used for semantic search and sparse retrieval.

Model Details

Model Description

• Model Type: SPLADE Sparse Encoder
• Base model: prajjwal1/bert-tiny
• Maximum Sequence Length: 512 tokens
• Output Dimensionality: 30522 dimensions
• Similarity Function: Dot Product
• Language: en
• License: mit

Model Sources

• Documentation: Sentence Transformers Documentation
• Documentation: Sparse Encoder Documentation
• Repository: Sentence Transformers on GitHub
• Hugging Face: Sparse Encoders on Hugging Face

Full Model Architecture

SparseEncoder(
  (0): MLMTransformer({'max_seq_length': 512, 'do_lower_case': False, 'architecture': 'BertForMaskedLM'})
  (1): SpladePooling({'pooling_strategy': 'max', 'activation_function': 'relu', 'word_embedding_dimension': 30522})
)

Usage

Direct Usage (Sentence Transformers)

First install the Sentence Transformers library:

pip install -U sentence-transformers

Then you can load this model and run inference.

from sentence_transformers import SparseEncoder

# Download from the 🤗 Hub
model = SparseEncoder("yosefw/SPLADE-BERT-Tiny-distil-v5")
# Run inference
queries = [
    "lists of narcotic medications",
]
documents = [
    'The following list of narcotics is just a sample of some of the names you may hear either in a medical setting or on the streets: 1  Heroin. 2  Opium. 3  Oxycontin. Oxycodone. 4  Hydrocodone. Hydromorphone. 5  Fentanyl. Buprenorphine. 6  Levorphanol. 7  Codeine. Lorcet. 8  Lortab. 9  Norco. 10  Oncet. Procet. 11  Vicodin.  Xodol. Zydone.',
    'When used in a legal context in the U.S., a narcotic drug is simply one that is totally prohibited, or one that is used in violation of governmental regulation, such as heroin or cannabis. In the medical community, the term is more precisely defined and generally does not carry the same negative connotations.',
    'Tomb is a vault for the dead (an enclosed grave). Raider means someone who attacks the enemy or steals. The term applies to grave robbers. Or treasure hunters. It is also the name of a popular multi platform video game(Tomb Raider). Which features a main character who is a explorer/treasure hunter(Lara Croft).',
]
query_embeddings = model.encode_query(queries)
document_embeddings = model.encode_document(documents)
print(query_embeddings.shape, document_embeddings.shape)
# [1, 30522] [3, 30522]

# Get the similarity scores for the embeddings
similarities = model.similarity(query_embeddings, document_embeddings)
print(similarities)
# tensor([[14.6490, 16.3028,  1.8537]])

Evaluation

Metrics

Sparse Information Retrieval

• Evaluated with SparseInformationRetrievalEvaluator

Training Details

Training Dataset

Unnamed Dataset

• Size: 1,400,000 training samples
• Columns: query , positive , negative , and label
• Approximate statistics based on the first 1000 samples:

  	query	positive	negative	label
  type	string	string	string	list
  details	min: 4 tokens mean: 8.98 tokens max: 40 tokens	min: 20 tokens mean: 80.67 tokens max: 298 tokens	min: 17 tokens mean: 76.49 tokens max: 238 tokens	size: 1 elements

• Samples:

  query	positive	negative	label
  what was the congressional reconstruction act?	On Mar. 2, 1867, Congress enacted the Reconstruction Act, which, supplemented later by three related acts, divided the South (except Tennessee) into five military districts in which the authority of the army commander was supreme.y Aug., 1868, six states (Arkansas, North Carolina, South Carolina, Louisiana, Alabama, and Florida) had been readmitted to the Union, having ratified the Fourteenth Amendment as required by the first Reconstruction Act.	Reconstruction Acts of 1867-1868. Johnson s vetoes of these measures were overridden by Congress, repeating a familiar pattern. Nearly two years following the end of the Civil War, Congress finally forged a complete plan for reconstruction.Three measures were passed in 1867 as well as additional legislation the following year.early two years following the end of the Civil War, Congress finally forged a complete plan for reconstruction. Three measures were passed in 1867 as well as additional legislation the following year.	[0.25]
  what are two similarities of atm and debit cards	Similarities of ATM Card and Debit Card ATM card and debit card are made of plastic and both have the same appearance. Both are issued by the bank and provide the facility like balance inquiry, withdrawal of money or make payment online and much more.	Debit cards offer the convenience of a credit but work in a different way. Debit cards draw money directly from your checking account when you make the purchase. They do this by placing a hold on the amount of the purchase.	[5.547402381896973]
  who makes runway enduro tires	Who makes Runway Enduro tires?	Reference.com https://www.reference.com/vehicles/runway-enduro-tires-e6fad1dc190d5183 Runway Enduro tires are manufactured by GITI Tire, one the largest tire manufacturing companies in Asia and the 10th largest in the world. GITI Tire is based in … Runway Tires Global	Passenger Car, 4×4/SUV & Light Truck/Van …

• Loss: SpladeLoss with these parameters:

  {
      "loss": "SparseMarginMSELoss",
      "document_regularizer_weight": 0.3,
      "query_regularizer_weight": 0.5
  }
  

Training Hyperparameters

Non-Default Hyperparameters

• eval_strategy : epoch
• per_device_train_batch_size : 24
• per_device_eval_batch_size : 24
• gradient_accumulation_steps : 2
• learning_rate : 8e-05
• num_train_epochs : 6
• lr_scheduler_type : cosine
• warmup_ratio : 0.025
• fp16 : True
• load_best_model_at_end : True
• optim : adamw_torch_fused
• push_to_hub : True

All Hyperparameters

Training Logs

• The bold row denotes the saved checkpoint.

Framework Versions

• Python: 3.11.11
• Sentence Transformers: 5.0.0
• Transformers: 4.53.2
• PyTorch: 2.6.0+cu124
• Accelerate: 1.5.2
• Datasets: 4.0.0
• Tokenizers: 0.21.1

Citation

BibTeX

Sentence Transformers

@inproceedings{reimers-2019-sentence-bert,
    title = "Sentence-BERT: Sentence Embeddings using Siamese BERT-Networks",
    author = "Reimers, Nils and Gurevych, Iryna",
    booktitle = "Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing",
    month = "11",
    year = "2019",
    publisher = "Association for Computational Linguistics",
    url = "https://arxiv.org/abs/1908.10084",
}

SpladeLoss

@misc{formal2022distillationhardnegativesampling,
      title={From Distillation to Hard Negative Sampling: Making Sparse Neural IR Models More Effective},
      author={Thibault Formal and Carlos Lassance and Benjamin Piwowarski and Stéphane Clinchant},
      year={2022},
      eprint={2205.04733},
      archivePrefix={arXiv},
      primaryClass={cs.IR},
      url={https://arxiv.org/abs/2205.04733},
}

SparseMarginMSELoss

@misc{hofstätter2021improving,
    title={Improving Efficient Neural Ranking Models with Cross-Architecture Knowledge Distillation},
    author={Sebastian Hofstätter and Sophia Althammer and Michael Schröder and Mete Sertkan and Allan Hanbury},
    year={2021},
    eprint={2010.02666},
    archivePrefix={arXiv},
    primaryClass={cs.IR}
}

FlopsLoss

@article{paria2020minimizing,
    title={Minimizing flops to learn efficient sparse representations},
    author={Paria, Biswajit and Yeh, Chih-Kuan and Yen, Ian EH and Xu, Ning and Ravikumar, Pradeep and P{'o}czos, Barnab{'a}s},
    journal={arXiv preprint arXiv:2004.05665},
    year={2020}
}