mmBERT-small reranker (LambdaLoss NDCG2++)

Model Details

Model Description

• Model Type: Cross Encoder
• Base model: jhu-clsp/mmBERT-small
• Maximum Sequence Length: 256 tokens
• Number of Output Labels: 1 label
• Training Dataset:
  • product_similarity_dataset
• Languages: multilingual, fr, de, zh, ru, pl, es, it, ja, ar, hi, pt, nl
• License: mit

Model Sources

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

Usage

Direct Usage (Sentence Transformers)

Evaluation

Metrics

Cross Encoder Reranking

• Dataset: rerank
• Evaluated with CrossEncoderRerankingEvaluator with these parameters:
  json

  1{ 2 "at_k": 10, 3 "always_rerank_positives": false 4}

Training Details

Training Dataset

product_similarity_dataset

• Dataset: product_similarity_dataset at 7aba3ef
• Size: 9,358 training samples
• Columns: query, documents, and scores
• Approximate statistics based on the first 1000 samples:

  	query	documents	scores
  type	string	list	list
  details	min: 6 characters mean: 57.18 characters max: 197 characters	size: 16 elements	size: 16 elements

• Samples:

  query	documents	scores
  Premier 26764 Car Spinner, Santa, 25 by 19-1/2-Inch	['Premier 26764 Tourbillon pour voiture, Santa, 25 x 19-1/2 pouces', 'BNTS, ЧИПСЫ ИЗ ФАСОЛИ NV И МОРСКАЯ СОЛЬ', 'Beanitos, Чипс из фасоли navy, Сыр на чо', 'K2 स्केट व्हील (4 का पैक)', 'BLST BALL МЯЧ ДЛЯ КИКА (2 ШТ.)', ...]	[1.0, 0.0, 0.0, 0.0, 0.0, ...]
  Juice Cocktail Blend From Concentrate, Apple Blueberry	['Mélange de cocktail de jus à base de concentré, pomme myrtille', 'Orange Juice From Concentrate With Pulp', 'Tropical Juice Splash From Concentrate', 'BLUEBERRY JUICE DRNK', 'APPLE NECTAR JUICE DRINK FROM CNCNTRT', ...]	[1.0, 0.4, 0.35, 0.65, 0.55, ...]
  Fruity Sour Strips Fruit-Flavored Chewy Candy	['Fruity Sour Strips Fruit-Flavored Chewy Candy', 'SR CANDIES, FRUIT SOUR', 'Fruit Candy, Fruit', 'FRT SNCK TUTTI FRUITY', 'Fruit Strips, Peach Passion', ...]	[1.0, 0.95, 0.7, 0.55, 0.9, ...]

• Loss: LambdaLoss with these parameters:
  json

  1{ 2 "weighting_scheme": "sentence_transformers.cross_encoder.losses.LambdaLoss.NDCGLoss2PPScheme", 3 "k": null, 4 "sigma": 1.0, 5 "eps": 1e-10, 6 "reduction_log": "binary", 7 "activation_fn": "torch.nn.modules.linear.Identity", 8 "mini_batch_size": null 9}

Training Hyperparameters

Non-Default Hyperparameters

• eval_strategy: steps
• learning_rate: 2e-05
• num_train_epochs: 1
• warmup_ratio: 0.1
• fp16: True
• load_best_model_at_end: True
• gradient_checkpointing: True

All Hyperparameters

Click to expand

• overwrite_output_dir: False
• do_predict: False
• eval_strategy: steps
• prediction_loss_only: True
• per_device_train_batch_size: 8
• per_device_eval_batch_size: 8
• 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: 2e-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: 1
• 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
• use_ipex: False
• bf16: False
• fp16: True
• 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
• 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: True
• 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: False
• 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: False
• prompts: None
• batch_sampler: batch_sampler
• multi_dataset_batch_sampler: proportional
• router_mapping: {}
• learning_rate_mapping: {}

Training Logs

Framework Versions

• Python: 3.12.11
• Sentence Transformers: 5.1.0
• Transformers: 4.56.1
• PyTorch: 2.8.0+cu126
• Accelerate: 1.10.1
• Datasets: 2.20.0
• Tokenizers: 0.22.0

Citation

BibTeX

Sentence Transformers

LambdaLoss