eliasjacob/st-bert-large-portuguese-cased-assin2

SentenceTransformer based on neuralmind/bert-large-portuguese-cased

This is a sentence-transformers model finetuned from neuralmind/bert-large-portuguese-cased on the score dataset. It maps sentences & paragraphs to a 1024-dimensional dense vector space and can be used for semantic textual similarity, semantic search, paraphrase mining, text classification, clustering, and more.

Model Details

Model Description

• Model Type: Sentence Transformer
• Base model: neuralmind/bert-large-portuguese-cased
• Maximum Sequence Length: 512 tokens
• Output Dimensionality: 1024 dimensions
• Similarity Function: Cosine Similarity
• Training Dataset:
  • score

Model Sources

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

Full Model Architecture

SentenceTransformer(
  (0): Transformer({'max_seq_length': 512, 'do_lower_case': False, 'architecture': 'BertModel'})
  (1): Pooling({'word_embedding_dimension': 1024, 'pooling_mode_cls_token': False, 'pooling_mode_mean_tokens': True, 'pooling_mode_max_tokens': False, 'pooling_mode_mean_sqrt_len_tokens': False, 'pooling_mode_weightedmean_tokens': False, 'pooling_mode_lasttoken': False, 'include_prompt': True})
)

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 SentenceTransformer

# Download from the 🤗 Hub
model = SentenceTransformer("eliasjacob/st-bert-large-portuguese-cased-assin2")
# Run inference
sentences = [
    'Não tem nenhuma mulher cortando uma cebola',
    'Um cavalo está parado',
    'Tem gente fazendo música',
]
embeddings = model.encode(sentences)
print(embeddings.shape)
# [3, 1024]

# Get the similarity scores for the embeddings
similarities = model.similarity(embeddings, embeddings)
print(similarities)
# tensor([[1.0000, 0.2669, 0.4234],
#         [0.2669, 1.0000, 0.3680],
#         [0.4234, 0.3680, 1.0000]])

Evaluation

Metrics

Semantic Similarity

• Dataset: assin2_score
• Evaluated with EmbeddingSimilarityEvaluator

Metric	Value
pearson_cosine	0.836
spearman_cosine	0.7999

Semantic Similarity

• Dataset: assin2_score
• Evaluated with EmbeddingSimilarityEvaluator

Metric	Value
pearson_cosine	0.9483
spearman_cosine	0.9197

Training Details

Training Dataset

score

• Dataset: score
• Size: 6,500 training samples
• Columns: sentence1, sentence2, and label
• Approximate statistics based on the first 1000 samples:

  	sentence1	sentence2	label
  type	string	string	float
  details	min: 6 tokens mean: 13.9 tokens max: 38 tokens	min: 6 tokens mean: 13.1 tokens max: 36 tokens	min: 0.3 mean: 0.93 max: 1.0

• Samples:

  sentence1	sentence2	label
  Uma criança risonha está segurando uma pistola de água e sendo espirrada com água	Uma criança está segurando uma pistola de água	0.9
  Os homens estão cuidadosamente colocando as malas no porta-malas de um carro	Os homens estão colocando bagagens dentro do porta-malas de um carro	0.9
  Uma pessoa tem cabelo loiro e esvoaçante e está tocando violão	Um guitarrista tem cabelo loiro e esvoaçante	0.9399999618530274

• Loss: CosineSimilarityLoss with these parameters:

  {
      "loss_fct": "torch.nn.modules.loss.MSELoss"
  }
  

Evaluation Dataset

score

• Dataset: score
• Size: 2,448 evaluation samples
• Columns: sentence1, sentence2, and label
• Approximate statistics based on the first 1000 samples:

  	sentence1	sentence2	label
  type	string	string	float
  details	min: 6 tokens mean: 14.03 tokens max: 36 tokens	min: 6 tokens mean: 13.29 tokens max: 33 tokens	min: 0.2 mean: 0.71 max: 1.0

• Samples:

  sentence1	sentence2	label
  O cachorro caramelo está assistindo um cachorro castanho que está nadando em uma lagoa	Um cachorro de estimação está de pé no banco e está olhando outro cachorro, que é castanho, na lagoa	0.7599999904632568
  O cara está fazendo exercícios no chão	Um cara está fazendo exercícios	0.75
  Um cachorro grande e um cachorro pequenino estão parados ao lado do balcão da cozinha e estão investigando	Um cachorro grande e um cachorro pequenino estão de pé no balcão da cozinha e investigam	0.8800000190734864

• Loss: CosineSimilarityLoss with these parameters:

  {
      "loss_fct": "torch.nn.modules.loss.MSELoss"
  }
  

Training Hyperparameters

Non-Default Hyperparameters

• eval_strategy: epoch
• per_device_train_batch_size: 128
• per_device_eval_batch_size: 128
• learning_rate: 3e-05
• num_train_epochs: 20
• warmup_ratio: 0.1
• bf16: True
• load_best_model_at_end: True

All Hyperparameters

Click to expand

• overwrite_output_dir: False
• do_predict: False
• eval_strategy: epoch
• prediction_loss_only: True
• per_device_train_batch_size: 128
• per_device_eval_batch_size: 128
• per_gpu_train_batch_size: None
• per_gpu_eval_batch_size: None
• gradient_accumulation_steps: 1
• eval_accumulation_steps: None
• torch_empty_cache_steps: None
• learning_rate: 3e-05
• weight_decay: 0.0
• adam_beta1: 0.9
• adam_beta2: 0.999
• adam_epsilon: 1e-08
• max_grad_norm: 1.0
• num_train_epochs: 20
• max_steps: -1
• lr_scheduler_type: linear
• lr_scheduler_kwargs: {}
• warmup_ratio: 0.1
• warmup_steps: 0
• log_level: passive
• log_level_replica: warning
• log_on_each_node: True
• logging_nan_inf_filter: True
• save_safetensors: True
• save_on_each_node: False
• save_only_model: False
• restore_callback_states_from_checkpoint: False
• no_cuda: False
• use_cpu: False
• use_mps_device: False
• seed: 42
• data_seed: None
• jit_mode_eval: False
• bf16: True
• fp16: False
• fp16_opt_level: O1
• half_precision_backend: auto
• bf16_full_eval: False
• fp16_full_eval: False
• tf32: None
• local_rank: 0
• ddp_backend: None
• tpu_num_cores: None
• tpu_metrics_debug: False
• debug: []
• dataloader_drop_last: False
• dataloader_num_workers: 0
• dataloader_prefetch_factor: None
• past_index: -1
• disable_tqdm: False
• remove_unused_columns: True
• label_names: None
• load_best_model_at_end: True
• ignore_data_skip: False
• fsdp: []
• fsdp_min_num_params: 0
• fsdp_config: {'min_num_params': 0, 'xla': False, 'xla_fsdp_v2': False, 'xla_fsdp_grad_ckpt': False}
• fsdp_transformer_layer_cls_to_wrap: None
• accelerator_config: {'split_batches': False, 'dispatch_batches': None, 'even_batches': True, 'use_seedable_sampler': True, 'non_blocking': False, 'gradient_accumulation_kwargs': None}
• parallelism_config: None
• deepspeed: None
• label_smoothing_factor: 0.0
• optim: adamw_torch_fused
• optim_args: None
• adafactor: False
• group_by_length: False
• length_column_name: length
• project: huggingface
• trackio_space_id: trackio
• ddp_find_unused_parameters: None
• ddp_bucket_cap_mb: None
• ddp_broadcast_buffers: False
• dataloader_pin_memory: True
• dataloader_persistent_workers: False
• skip_memory_metrics: True
• use_legacy_prediction_loop: False
• push_to_hub: False
• resume_from_checkpoint: None
• hub_model_id: None
• hub_strategy: every_save
• hub_private_repo: None
• hub_always_push: False
• hub_revision: None
• gradient_checkpointing: False
• gradient_checkpointing_kwargs: None
• include_inputs_for_metrics: False
• include_for_metrics: []
• eval_do_concat_batches: True
• fp16_backend: auto
• push_to_hub_model_id: None
• push_to_hub_organization: None
• mp_parameters:
• auto_find_batch_size: False
• full_determinism: False
• torchdynamo: None
• ray_scope: last
• ddp_timeout: 1800
• torch_compile: False
• torch_compile_backend: None
• torch_compile_mode: None
• include_tokens_per_second: False
• include_num_input_tokens_seen: no
• neftune_noise_alpha: None
• optim_target_modules: None
• batch_eval_metrics: False
• eval_on_start: False
• use_liger_kernel: False
• liger_kernel_config: None
• eval_use_gather_object: False
• average_tokens_across_devices: True
• prompts: None
• batch_sampler: batch_sampler
• multi_dataset_batch_sampler: proportional
• router_mapping: {}
• learning_rate_mapping: {}

Training Logs

Epoch	Step	Training Loss	score loss	assin2_score_spearman_cosine
-1	-1	-	-	0.6192
1.0	26	-	0.0242	0.6936
1.9231	50	0.0201	-	-
2.0	52	-	0.0214	0.7755
3.0	78	-	0.0209	0.7941
3.8462	100	0.006	-	-
4.0	104	-	0.0198	0.7998
5.0	130	-	0.0207	0.7999
5.7692	150	0.0033	-	-
6.0	156	-	0.0209	0.7983
7.0	182	-	0.0203	0.8011
7.6923	200	0.0024	-	-
8.0	208	-	0.0214	0.8026
9.0	234	-	0.0207	0.8021
9.6154	250	0.0019	-	-
10.0	260	-	0.0207	0.8021
11.0	286	-	0.0210	0.8023
11.5385	300	0.0016	-	-
12.0	312	-	0.0212	0.8036
13.0	338	-	0.0212	0.8027
13.4615	350	0.0015	-	-
14.0	364	-	0.0213	0.8016
15.0	390	-	0.0210	0.8031
15.3846	400	0.0013	-	-
16.0	416	-	0.0213	0.8031
17.0	442	-	0.0215	0.8040
17.3077	450	0.0012	-	-
18.0	468	-	0.0211	0.8031
19.0	494	-	0.0212	0.8033
19.2308	500	0.0012	-	-
20.0	520	-	0.0212	0.8033
-1	-1	-	-	0.9197

• The bold row denotes the saved checkpoint.

Framework Versions

• Python: 3.13.5
• Sentence Transformers: 5.1.1
• Transformers: 4.57.1
• PyTorch: 2.8.0+cu128
• Accelerate: 1.11.0
• Datasets: 4.2.0
• Tokenizers: 0.22.1

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",
}