thu-ml/tianshou

Support Dict observation spaces

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#1065 opened on Feb 26, 2024

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 (8 comments) (0 reactions) (0 assignees)Python (7,121 stars) (1,072 forks)batch import
documentationenhancementgood first issuetentative

Description

Maybe also action spaces.

I'm not sure what the status of the current support is, and I can't estimate the complexity.

It's probably not a priority, but if an external contributor wants to look into it, we could review this. The solution should come with proper documentation

Looking at how other projects support complex action/observation spaces might be a good start.

Related issues: #1064

Contributor guide

Tech stack
pythonpytorch
Domain
machine learning
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
PythonPyTorchreinforcement learning basicsGymnasium's Dict space
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Examine how other RL libraries (e.g., Stable Baselines3) handle Dict observation spaces. Review the current state of Tianshou's environment wrapper (e.g., in tianshou/env/) and related issue #1064. Implement a solution that properly registers and processes Dict spaces, ensuring backward compatibility. Add unit tests and documentation.