sentence-transformers safetensors bert feature-extraction sentence-similarity transformers rubert bi-encoder retriever msmarco ru dataset:unicamp-dl/mmarco base_model:DeepPavlov/rubert-base-cased base_model:finetune:DeepPavlov/rubert-base-cased license:mit model-index autotrain_compatible text-embeddings-inference endpoints_compatible region:us