Why do you use VhGraphEnv environment?

[TienyuZuo]

Very good work, thank you, it inspired me a lot. I am a new virtuhome environment, I have some questions when reading your code, I hope to get your help. I observed that you used VhGraphEnv, while other work also experimenting in virtuhome used UnityEnvironment. What's your reason for doing this? What's the difference between UnityEnvironment and VhGraphEnv?

Hope to get your help, thank you in advance.

[WeihaoTan]

Thanks for reaching out. Both UnityEnvironment and VhGraphEnv maintain the same graph node file, which contains all the information for the env. The only difference between them is that UnityEnvironment renders the file with the engine, which usually costs more computational resources, while VhGraphEnv does not. Since we apply a LLM, which does not need images as input. We simply use the VhGraphEnv for efficiency. You can refer to VirtualHome's doc (https://github.com/xavierpuigf/virtualhome) for more details.