sentence-transformers safetensors bert sentence-similarity feature-extraction generated_from_trainer dataset_size:6235 loss:MegaBatchMarginLoss arxiv:1908.10084 base_model:sentence-transformers/use-cmlm-multilingual base_model:finetune:sentence-transformers/use-cmlm-multilingual autotrain_compatible text-embeddings-inference endpoints_compatible region:us