gguf arxiv ggml quantized q2_k q3_k_m q4_k_m q5_k_m q6_k text-generation en base_model:AlgorithmicResearchGroup/phi-2-arxiv-physics-instruct base_model:quantized:AlgorithmicResearchGroup/phi-2-arxiv-physics-instruct license:apache-2.0 region:us