sentence-transformers safetensors bert sentence-similarity feature-extraction generated_from_trainer dataset_size:985575 loss:CosineSimilarityTripleEncoderLoss loss:ContrastiveLoss arxiv:1908.10084 base_model:UKPLab/triple-encoders-dailydialog base_model:finetune:UKPLab/triple-encoders-dailydialog autotrain_compatible text-embeddings-inference endpoints_compatible region:us