Tictactemoji

To start your Phoenix server:

• Run mix setup to install and setup dependencies
• Start Phoenix endpoint with mix phx.server or inside IEx with iex -S mix phx.server

Now you can visit localhost:4000 from your browser.

tictactemoji.mp4

Tech Notes

• Wanted to learn more about https://github.com/elixir-nx
• Used variation of tic tac toe where only last 3 moves are kept
• Created neural network with Axon. Uses supervised learning.
• Meant to run locally. Not deploying this anywhere.
• The training data included is not explained. Maybe later. It's a lot to write.
• The grid is represented as a list from 0-8

0 | 1 | 2
3 | 4 | 5
6 | 7 | 8

• Each potential move is scored. The output on the console looks like:

PREDICTION: [
  {0.9915338158607483, 3},
  {0.003853111295029521, 6},
  {0.001458177575841546, 5},
  {9.841511491686106e-4, 2},
  {9.607021347619593e-4, 7},
  {9.043502504937351e-4, 8},
  {2.5609220028854907e-4, 4},
  {2.5914539946825244e-5, 1},
  {2.355606557102874e-5, 0}

Helpful resources

• https://pragprog.com/titles/smelixir/machine-learning-in-elixir/
• https://introtodeeplearning.com
• https://www.youtube.com/playlist?list=PLOspHqNVtKAC-FUNMq8qjYVw6_semZHw0
• https://the-mvm.github.io/deep-q-learning-tic-tac-toe.html