Using Fractal Neural Networks to Play SimCity 1 and Conway's Game of Life at Variable Scales

• URL: http://arxiv.org/abs/2002.03896v1
• Date: Wed, 29 Jan 2020 19:10:31 GMT
• Title: Using Fractal Neural Networks to Play SimCity 1 and Conway's Game of Life at Variable Scales
• Authors: Sam Earle
• Abstract summary: Gym-city is a Reinforcement Learning environment that uses SimCity 1's game engine to simulate an urban environment. We focus on population, and analyze our agents' ability to generalize to larger map-sizes than those seen during training.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We introduce gym-city, a Reinforcement Learning environment that uses SimCity 1's game engine to simulate an urban environment, wherein agents might seek to optimize one or a combination of any number of city-wide metrics, on gameboards of various sizes. We focus on population, and analyze our agents' ability to generalize to larger map-sizes than those seen during training. The environment is interactive, allowing a human player to build alongside agents during training and inference, potentially influencing the course of their learning, or manually probing and evaluating their performance. To test our agents' ability to capture distance-agnostic relationships between elements of the gameboard, we design a minigame within the environment which is, by design, unsolvable at large enough scales given strictly local strategies. Given the game engine's extensive use of Cellular Automata, we also train our agents to "play" Conway's Game of Life -- again optimizing for population -- and examine their behaviour at multiple scales. To make our models compatible with variable-scale gameplay, we use Neural Networks with recursive weights and structure -- fractals to be truncated at different depths, dependent upon the size of the gameboard.

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