transformers gguf reasoning preference_learning nca en dataset:openbmb/UltraInteract_pair dataset:openbmb/UltraFeedback base_model:jukofyork/Eurus-70b-nca-fixed base_model:quantized:jukofyork/Eurus-70b-nca-fixed license:apache-2.0 endpoints_compatible region:us conversational