Seeking Information on the Origin of ollama Models

[aaronyy9]

Who can tell me where the models in ollama are downloaded from? For example, is gemma:7b-instruct-fp16, as in ollama run gemma:7b-instruct-fp16, sourced from Hugging Face? If so, who can tell me the specific source, or are the large models in ollama all newly quantized or fine-tuned by themselves?