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README.md

Udacity Deep Reinforcement Learning Nanodegree Project: Reacher

Project Details

The objective of this project is to solve the Unity ML-Agents task, Reacher, in which continuous control of 2-link robot arms are maintained in the attempt to keep the robot arms within a moving goal volume. A video of the environment is available here.

Specifics of the Task

  • The state space is made of 33 observations of continuous features that exist in the range of [-1, 1].
  • The action space consists of 4 continuous actions representing the torques applied to the 2 joints. The values for each feature of the action must be within [-1, 1].
  • This version of the environment runs 20 agents in parallel.
  • Agents are rewarded with a score of 0.1 for each step in which the end of the robot arm is within the floating goal volume, and a score of 0.0 for each step in which the robot arm does not end within the floating goal volume.
  • The environment is considered solved when all 20 agents obtain an average episode score of +30.0 over the course of 100 episodes.

Installation

This repository runs within the provided docker environment. The base image upon which this repository's docker image is built is freely available from my DockerHub, ccthompson82/drlnd:0.0.7. No downloads are necessary if the instructions below are followed.

Dependencies

  • Python 2.7 or Python 3.5
  • Docker version 17 or later

Setup the docker image

  1. Update the data directory in the Makefile of this project's repository.

    • Modify the environment variable definition on line 37. It can be advantageous to mount a storage directory, though a default option would simply be DATA_SOURCE=$(PWD)/data to keep and track data locally in this repository.
  2. Setup the development environment in a Docker container with the following command:

    • make init

    This command gets the resources for training and testing, and then prepares the Docker image for the experiments.

Launching the docker container

  1. After creating the Docker image, run the following command.
  • make create-container

    The above command creates a Docker container from the Docker image which we create with make init, and then login to the Docker container. This command needs to be run only once after creating the docker image. After the container hs been created with the command above, use the following command to enter the existing container: make start-container.

Credits

This package was created with Cookiecutter and the cookiecutter-docker-science project template.

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