This repository shows how you can use Neataptic to succesfully teach neural networks to trace targets. You can see the genomes live in action here. These genomes have been trained for over 100 generations and are very effective. Visualisation done with P5.js. The next step would be adding collisions, to possibly reveal some interesting tactics.
Read an article on this repo here.
These forks of this library are interesting to check out as well:
- corpr8's fork gives each neural agent its own acceleration, as well as letting each arrow remain in the same place after each generation. This creates a much more 'fluid' process.
If you manage to optimize the settings, please perform either a pull request or create an issue here.
WIDTHset the width of the playing fieldHEIGHTset the height of the playing fieldMAX_SPEEDset the maximal multiplier speed a genome can have (smaller genomes move faster)START_Xset the x-location from which each genome (and the target) startsSTART_Yset the y-location from which each genome (and the target) startsSCORE_RADIUSset the distance to the target from where genomes get assigned scorePLAYER_AMOUNTset the amount of genomes that play on the field (population size)ITERATIONSset the amount of iterations/frames each generation is tested forSTART_HIDDEN_SIZEset the amount of hidden nodes each genome starts witchMUTATION_RATEset the mutation rateELITISMset the amount of elitism
Most important setting:
USE_TRAINED_POPsetting this tofalsewill start the evolution from scratch (USE THIS WHEN OPTIMIZING THE SETTINGS), setting this totruewill use the pre-trained population
var WIDTH = $('#field').width();
var HEIGHT = 800;
var MAX_SPEED = 5;
var START_X = WIDTH/2;
var START_Y = HEIGHT/2;
var SCORE_RADIUS = 100;
// GA settings
var PLAYER_AMOUNT = Math.round(2.3e-4 * WIDTH * HEIGHT);
var ITERATIONS = 250;
var MUTATION_RATE = 0.3;
var ELITISM = Math.round(0.1 * PLAYER_AMOUNT);
// Trained population
var USE_TRAINED_POP = true;