SentenceTransformer

Model Details

Model Description

• Model Type: Sentence Transformer

• Maximum Sequence Length: inf tokens
• Output Dimensionality: 1024 dimensions
• Similarity Function: Cosine Similarity
• Training Dataset:
  • gooaq
• Language: en

Model Sources

• Documentation: Sentence Transformers Documentation
• Repository: Sentence Transformers on GitHub
• Hugging Face: Sentence Transformers on Hugging Face

Full Model Architecture

SentenceTransformer(
  (0): StaticEmbedding(
    (embedding): EmbeddingBag(256000, 1024, mode='mean')
  )
)

Usage

Direct Usage (Sentence Transformers)

Training Details

Training Dataset

gooaq

• Dataset: gooaq at b089f72
• Size: 3,012,496 training samples
• Columns: question and answer
• Approximate statistics based on the first 1000 samples:

  	question	answer
  type	string	string
  details	min: 18 characters mean: 43.23 characters max: 96 characters	min: 55 characters mean: 253.36 characters max: 371 characters

• Samples:

  question	answer
  what is the difference between broilers and layers?	An egg laying poultry is called egger or layer whereas broilers are reared for obtaining meat. So a layer should be able to produce more number of large sized eggs, without growing too much. On the other hand, a broiler should yield more meat and hence should be able to grow well.
  what is the difference between chronological order and spatial order?	As a writer, you should always remember that unlike chronological order and the other organizational methods for data, spatial order does not take into account the time. Spatial order is primarily focused on the location. All it does is take into account the location of objects and not the time.
  is kamagra same as viagra?	Kamagra is thought to contain the same active ingredient as Viagra, sildenafil citrate. In theory, it should work in much the same way as Viagra, taking about 45 minutes to take effect, and lasting for around 4-6 hours. However, this will vary from person to person.

• Loss: MatryoshkaLoss with these parameters:
  json

  1{ 2 "loss": "MultipleNegativesRankingLoss", 3 "matryoshka_dims": [ 4 1024, 5 768, 6 512, 7 256, 8 128, 9 64, 10 32 11 ], 12 "matryoshka_weights": [ 13 1, 14 1, 15 1, 16 1, 17 1, 18 1, 19 1 20 ], 21 "n_dims_per_step": -1 22}

Evaluation Dataset

gooaq

• Dataset: gooaq at b089f72
• Size: 3,012,496 evaluation samples
• Columns: question and answer
• Approximate statistics based on the first 1000 samples:

  	question	answer
  type	string	string
  details	min: 18 characters mean: 43.17 characters max: 98 characters	min: 51 characters mean: 254.12 characters max: 360 characters

• Samples:

  question	answer
  how do i program my directv remote with my tv?	['Press MENU on your remote.', 'Select Settings & Help > Settings > Remote Control > Program Remote.', 'Choose the device (TV, audio, DVD) you wish to program. ... ', 'Follow the on-screen prompts to complete programming.']
  are rodrigues fruit bats nocturnal?	Before its numbers were threatened by habitat destruction, storms, and hunting, some of those groups could number 500 or more members. Sunrise, sunset. Rodrigues fruit bats are most active at dawn, at dusk, and at night.
  why does your heart rate increase during exercise bbc bitesize?	During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it.

• Loss: MatryoshkaLoss with these parameters:
  json

  1{ 2 "loss": "MultipleNegativesRankingLoss", 3 "matryoshka_dims": [ 4 1024, 5 768, 6 512, 7 256, 8 128, 9 64, 10 32 11 ], 12 "matryoshka_weights": [ 13 1, 14 1, 15 1, 16 1, 17 1, 18 1, 19 1 20 ], 21 "n_dims_per_step": -1 22}

Training Hyperparameters

Non-Default Hyperparameters

• eval_strategy: steps
• per_device_train_batch_size: 2048
• per_device_eval_batch_size: 2048
• learning_rate: 0.2
• num_train_epochs: 1
• warmup_ratio: 0.1
• bf16: True
• batch_sampler: no_duplicates

All Hyperparameters

Training Logs

Framework Versions

• Python: 3.11.11
• Sentence Transformers: 3.3.1
• Transformers: 4.47.1
• PyTorch: 2.5.1+cu121
• Accelerate: 1.2.1
• Datasets: 3.2.0
• Tokenizers: 0.21.0

NanoBEIREvaluator > 0.8

{
    "NanoDBPedia_cosine_accuracy@3": 0.86,
    "NanoDBPedia_cosine_accuracy@5": 0.92,
    "NanoDBPedia_cosine_accuracy@10": 0.96,
    "NanoFEVER_cosine_accuracy@3": 0.86,
    "NanoFEVER_cosine_accuracy@5": 0.92,
    "NanoFEVER_cosine_accuracy@10": 0.96,
    "NanoHotpotQA_cosine_accuracy@3": 0.82,
    "NanoHotpotQA_cosine_accuracy@5": 0.84,
    "NanoHotpotQA_cosine_accuracy@10": 0.88,
    "NanoQuoraRetrieval_cosine_accuracy@1": 0.88,
    "NanoQuoraRetrieval_cosine_accuracy@3": 0.96,
    "NanoQuoraRetrieval_cosine_accuracy@5": 1.0,
    "NanoQuoraRetrieval_cosine_accuracy@10": 1.0,
    "NanoSCIDOCS_cosine_accuracy@5": 0.82,
    "NanoSCIDOCS_cosine_accuracy@10": 0.92,
    "NanoArguAna_cosine_accuracy@10": 0.92,
    "NanoSciFact_cosine_accuracy@10": 0.88,
    "NanoTouche2020_cosine_accuracy@3": 0.8367346938775511,
    "NanoTouche2020_cosine_accuracy@5": 0.9183673469387755,
    "NanoTouche2020_cosine_accuracy@10": 0.9387755102040817,
    "NanoBEIR_mean_cosine_accuracy@10": 0.8583673469387756
}

All NanoBEIREvaluator

Citation

BibTeX

Sentence Transformers

MatryoshkaLoss

MultipleNegativesRankingLoss