song9/embeddinggemma-300m-KorSTS

SentenceTransformer based on google/embeddinggemma-300m

This is a sentence-transformers model finetuned from google/embeddinggemma-300m. It maps sentences & paragraphs to a 768-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: google/embeddinggemma-300m
• Maximum Sequence Length: 2048 tokens
• Output Dimensionality: 768 dimensions
• Similarity Function: Cosine Similarity
• Languages: multilingual, ko
• License: cc-by-sa-4.0

Model Sources

• Training Code: skier-song9/DL_study/codes/nlp/Finetune_Kor_STS.ipynb

• 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': 2048, 'do_lower_case': False, 'architecture': 'Gemma3TextModel'})
  (1): Pooling({'word_embedding_dimension': 768, '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})
  (2): Dense({'in_features': 768, 'out_features': 3072, 'bias': False, 'activation_function': 'torch.nn.modules.linear.Identity'})
  (3): Dense({'in_features': 3072, 'out_features': 768, 'bias': False, 'activation_function': 'torch.nn.modules.linear.Identity'})
  (4): Normalize()
)

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("song9/embeddinggemma-300m-KorSTS")
# Run inference
queries = [
    "한 소녀가 머리를 스타일링하고 있다.",
]
sentences = [
    '한 소녀가 머리를 빗고 있다.',
    '한 무리의 소년들이 해변에서 축구를 하고 있다.',
    '한 여자는 다른 여자의 발목을 측정한다.',
    '한 남자가 키보드를 연주하고 있다.',
    '한 남자가 하프를 연주하고 있다.',
]
query_embeddings = model.encode(queries)
sentences_embeddings = model.encode(sentences)
print(query_embeddings.shape, sentences_embeddings.shape)
# (1, 768) (5, 768)

# Get the similarity scores for the embeddings
similarities = model.similarity(query_embeddings, sentences_embeddings)
print(similarities)
# tensor([[0.7389, 0.1011, 0.0921, 0.0836, 0.1487]])

Evaluation

Metrics

Semantic Similarity

• Datasets: korsts-dev and korsts-test
• Evaluated with EmbeddingSimilarityEvaluator

Metric	korsts-dev	korsts-test
pearson_cosine	0.8305	0.7765
spearman_cosine	0.8285	0.7633

• There are NaN data in korsts-test. After dropping NaN data in korsts-test, spearman_cosine increases.

  Metric	korsts-test (w/o NaN)
  pearson_cosine	0.7829
  spearman_cosine	0.7689

Semantic Similarity

• Dataset: korsts-dev
• Evaluated with EmbeddingSimilarityEvaluator

Metric	Value
pearson_cosine	0.7765
spearman_cosine	0.7633

Training Details

Training Dataset

KorSTS-train Dataset

• Size: 5,696 training samples
• Columns: sentence1, sentence2, and label
• Approximate statistics based on the first 1000 samples:

  	sentence1	sentence2	label
  type	string	string	float
  details	min: 8 tokens mean: 13.14 tokens max: 35 tokens	min: 8 tokens mean: 12.96 tokens max: 30 tokens	min: 0.0 mean: 0.45 max: 1.0

• Samples:

  sentence1	sentence2	label
  비행기가 이륙하고 있다.	비행기가 이륙하고 있다.	1.0
  한 남자가 큰 플루트를 연주하고 있다.	남자가 플루트를 연주하고 있다.	0.76
  한 남자가 피자에 치즈를 뿌려놓고 있다.	한 남자가 구운 피자에 치즈 조각을 뿌려놓고 있다.	0.76

• Loss: CosineSimilarityLoss with these parameters:

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

Evaluation Dataset

KorSTS-dev Dataset

• Size: 1,466 evaluation samples
• Columns: sentence1, sentence2, and label
• Approximate statistics based on the first 1000 samples:

  	sentence1	sentence2	label
  type	string	string	float
  details	min: 7 tokens mean: 19.41 tokens max: 159 tokens	min: 2 tokens mean: 19.24 tokens max: 51 tokens	min: 0.0 mean: 0.42 max: 1.0

• Samples:

  sentence1	sentence2	label
  안전모를 가진 한 남자가 춤을 추고 있다.	안전모를 쓴 한 남자가 춤을 추고 있다.	1.0
  어린아이가 말을 타고 있다.	아이가 말을 타고 있다.	0.95
  한 남자가 뱀에게 쥐를 먹이고 있다.	남자가 뱀에게 쥐를 먹이고 있다.	1.0

• Loss: CosineSimilarityLoss with these parameters:

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

Training Hyperparameters

Non-Default Hyperparameters

• eval_strategy: steps
• gradient_accumulation_steps: 2
• torch_empty_cache_steps: 20
• learning_rate: 2e-06
• max_steps: 800
• lr_scheduler_type: cosine
• bf16: True
• bf16_full_eval: True
• load_best_model_at_end: True
• push_to_hub: True
• hub_model_id: song9/embeddinggemma-300m-KorSTS
• hub_strategy: end
• auto_find_batch_size: 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: 2
• eval_accumulation_steps: None
• torch_empty_cache_steps: 20
• learning_rate: 2e-06
• weight_decay: 0.0
• adam_beta1: 0.9
• adam_beta2: 0.999
• adam_epsilon: 1e-08
• max_grad_norm: 1.0
• num_train_epochs: 3
• max_steps: 800
• lr_scheduler_type: cosine
• lr_scheduler_kwargs: {}
• warmup_ratio: 0.0
• 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: True
• fp16: False
• fp16_opt_level: O1
• half_precision_backend: auto
• bf16_full_eval: True
• 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}
• deepspeed: None
• label_smoothing_factor: 0.0
• optim: adamw_torch
• 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: True
• resume_from_checkpoint: None
• hub_model_id: song9/embeddinggemma-300m-KorSTS
• hub_strategy: end
• hub_private_repo: None
• hub_always_push: False
• 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: True
• 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
• 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

Epoch	Step	Training Loss	Validation Loss	korsts-dev_spearman_cosine	korsts-test_spearman_cosine
0.5618	100	0.0881	0.0300	0.8188	-
1.1236	200	0.0627	0.027	0.8362	-
1.6854	300	0.0382	0.0275	0.8334	-
2.2472	400	0.0277	0.0276	0.8340	-
2.8090	500	0.016	0.0277	0.8320	-
3.3708	600	0.0105	0.0280	0.8296	-
3.9326	700	0.0078	0.0281	0.8289	-
4.4944	800	0.0054	0.0282	0.8285	-
-1	-1	-	-	0.7633	0.7633

• The bold row denotes the saved checkpoint.

Framework Versions

• Python: 3.11.13
• Sentence Transformers: 5.1.1
• Transformers: 4.52.4
• PyTorch: 2.6.0+cu124
• Accelerate: 1.8.1
• Datasets: 3.6.0
• Tokenizers: 0.21.2

Citation

@article{ham2020kornli,
  title={KorNLI and KorSTS: New Benchmark Datasets for Korean Natural Language Understanding},
  author={Ham, Jiyeon and Choe, Yo Joong and Park, Kyubyong and Choi, Ilji and Soh, Hyungjoon},
  journal={arXiv preprint arXiv:2004.03289},
  year={2020}
}

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",
}