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selfx: a self explorer

DOI

The nature of self is a hot topic in human history, rich but debating. Reinforcement learning sheds new light on this old area. In this project, we investigate the potential of the reflective two-world structure:

  • the outer world: the real game environment
  • the inner world: a virtual world set up by the agent

Example game

The code in selfx_billard is a reference example. In this example, the agent monster(the yellow dot) is like a plankton living in water swarmed by small algae (the green dots), and the obstacles(the red disc) are also part of the enviroment.

Both the action of idle and swimming will cost energy, the only way for monster to survive is to eat algae to charge energy.

The longer the monster live, the higher the game score is.

In the output video, the screen is divided into three parts:

  • the local view from the point of the monster
  • the global view of the inner world
  • the global view of the outer world

Only the first two views - the local view and the global view of the inner world - are accessible by the monster and uses them as inputs of neural network.

demo

After training for 98 episode, the monster was learned to avoid obstacles, but it could merely draw randomly on the inner world.

Setup and training

This project follow the standard of gym proposed by OpenAI.

Setup the enviroment

git clone https://github.com/mountain/selfx.git
cd selfx
. hello

Testing the gym env

Assuming the current directory is in the root of selfx

. hello
python -m main

Trainning the program

Assuming the current directory is in the root of selfx

. hello
python -m mainq -g 0 -n 1000

Inference a model

Assuming the current directory is in the root of selfx

. hello
python -m demo