Curiosity-Driven Exploration - pytorch implementation w/ CartPole (Simple version)

Paper: Curiosity-driven Exploration by Self-supervised Prediction, D. Pathak, 2017

Dependencies

• python 3.6.8 (Anaconda)
• pytorch 1.0.0
• gym 0.12.1

Usage

• Easy easy. Install the dependencies and run the below command.

	python main.py

Performance (sparse reward mode. only final penelty)

• Red: A2C with ICM, Blue: A2C w/o ICM
• A2C w/ ICM seems to converge slightly faster than the other on average in my experiments.

Notes

• I trained the model in CartPole environment. However, it is not the best choice for experiment of curiosity
• I modified overall model architecture.
  • A2C instead of A3C (Just Actor Critic using Advantage, not parallel technique).
  • Very simple inverse model and forward model. Because the observation of CartPole is already some feature representations, not image.
  • Larger scaling factor of intrinsic rewards.

Other Codes

• Author's TensorFlow implementation with Doom