sentence-transformers safetensors roberta sentence-similarity feature-extraction generated_from_trainer dataset_size:11354 loss:BatchAllTripletLoss arxiv:1908.10084 arxiv:1703.07737 base_model:FacebookAI/roberta-base base_model:finetune:FacebookAI/roberta-base autotrain_compatible text-embeddings-inference endpoints_compatible region:us