sentence-transformers safetensors roberta sentence-similarity feature-extraction dataset_size:1K<n<10K loss:CoSENTLoss ca arxiv:1908.10084 base_model:projecte-aina/roberta-base-ca-v2 base_model:finetune:projecte-aina/roberta-base-ca-v2 model-index autotrain_compatible text-embeddings-inference endpoints_compatible region:us