transformers gguf llama merge medical text-generation en zh dataset:GBaker/MedQA-USMLE-4-options dataset:cognitivecomputations/samantha-data dataset:shibing624/medical base_model:sethuiyer/Dr_Samantha-7b base_model:quantized:sethuiyer/Dr_Samantha-7b license:llama2 text-generation-inference region:us