Reinforce-PixelCopter

🚁 Reinforce Agent on Pixelcopter-PLE-v0

This repository contains a trained Reinforce (Policy Gradient) agent that successfully plays the Pixelcopter-PLE-v0 environment.

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📊 Model Card

Model Name: Reinforce-Pixelcopter-PLE-v0
Environment: Pixelcopter-PLE-v0
Algorithm: Reinforce (Monte Carlo Policy Gradient)
Performance Metric:

• Achieves stable flight and obstacle avoidance across evaluation runs
• Mean reward demonstrates convergence to an effective policy

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🚀 Usage

from huggingface_hub import load_from_hub
import gym

# Load the trained Reinforce model
model = load_from_hub(
    repo_id="KraTUZen/Reinforce-Pixelcopter-PLE-v0",
    filename="reinforce.pkl"
)

# Initialize environment
env = gym.make(model["env_id"])

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🧠 Notes

• The agent is trained using the Reinforce algorithm, which updates policy parameters based on episodic returns.
• The environment is Pixelcopter-PLE-v0, a pixel-based game where the agent must keep the helicopter flying while avoiding obstacles.
• The serialized policy is stored in reinforce.pkl.

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📂 Repository Structure

• reinforce.pkl → Trained policy weights
• README.md → Documentation and usage guide

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✅ Results

• The agent learns to maintain altitude and avoid collisions with obstacles.
• Demonstrates convergence to a stable policy using policy gradient methods.

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🔎 Environment Overview

• Observation Space: Pixel-based state representation (visual input)
• Action Space: Discrete (flap or no flap)
• Objective: Keep the helicopter flying while avoiding obstacles
• Reward: Positive reward for survival, penalties for collisions

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📚 Learning Highlights

• Algorithm: Reinforce (Policy Gradient)
• Update Rule: Policy parameters updated using returns from sampled episodes
• Strengths: Effective for environments with discrete actions and episodic rewards
• Limitations: High variance in updates, mitigated with sufficient training episodes