sentence-transformers safetensors mpnet sentence-similarity feature-extraction dataset_size:1M<n<10M loss:MultipleNegativesRankingLoss en dataset:sentence-transformers/gooaq arxiv:1908.10084 arxiv:1705.00652 base_model:microsoft/mpnet-base base_model:finetune:microsoft/mpnet-base license:apache-2.0 model-index co2_eq_emissions autotrain_compatible endpoints_compatible region:us