OLMo Support For 7B models In DeepChem

According to the Google Summer of Code (GSoC) project ideas listed for One proposed DeepChem project involves adding support for the OLMo Large Language Model (LLM) family to the DeepChem repository using the Hugging Face Model wrapper. The goal of this project is to enable DeepChem users to perform tasks such as text generation, classification, and continued pretraining with large language models, including Open Language Model (OLMo). I have already contributed several improvements to DeepChem’s HuggingFaceModel integration, including improving typing and validation for the fill mask method and implementing a new generate() function that wraps HuggingFace’s text generation API. I have also already demonstrated partial compatibility with OLMo models through recent contributions to the generate() function and example scripts using allenai/OLMo-1B-hf. I have also added support for causal language modeling in the HuggingFaceModel wrapper, including integration with AutoModelForCausalLM and end-to-end validation through unit tests. My contributions demonstrate familiarity with the DeepChem codebase and provide the foundation for extending DeepChem to support large language models such as OLMo.