Just an FYI,the Yi license is a custom license an is not what I would describe an "open license": https://huggingface.co/01-ai/Yi-34B/blob/main/LICENSE It's non-commercial only: "If you plan to use the Yi Series Models and Derivatives for Commercial Purposes, you should contact the Licensor in advance" and "Your use of the Yi Series Models must comply with the Laws and Regulations as well as applicable legal requirem…
Worth noting they include synthetic data and training other models as derivatives: > “Derivatives” refers to all modifications to Yi Series Models, work based on Yi Series Models, or any other models created or initialized by transferring the weights, parameters, activations, or output patterns of Yi Series Models to other models to achieve similar performance, including but not limited to methods that require using…
The question of whether the weights can be copyrighted is separate, but I also honestly don't think so. I think all these model weight licenses are an emperor's new clothes scenario, where everyone is too afraid to call out the obvious.