artificial neural network in a tic tac toe symfony console application - symfonycon 2014

with PHP on a Symfony Console TicTacToe game

Artificial Neural Networks

ANN with PHP SymfonyCon Madrid 2014

Agenda

1. Demo

2. Symfony Console

3. Symfony Console Helpers

4. ANN Theory

6. PHP + FANN

7. Show me the code

8. Demo

9. Q&A


Demo

vs.


Symfony Console


Symfony Console - Installation

#!/usr/bin/env php<?phprequire __DIR__ . ‘/../vendor/autoload.php';

use Symfony\Component\Console\Application; $app = new Application(); $app->run();

bin/console

{ ... "require": { "symfony/console": "~2.5" } ...}

composer.json


Symfony Console - Installation

#!/usr/bin/env php<?phprequire __DIR__ . ‘/../vendor/autoload.php';

use Symfony\Component\Console\Application; $app = new Application(); $app->run();

bin/console

{ ... "require": { "symfony/console": "~2.5" } ...}

composer.json

$ php bin/console

$ chmod +x bin/console$ bin/console


Symfony console style guidehttps://github.com/symfony/symfony-docs/issues/4265

Created by @javiereguiluzImproved by Symfony community

https://github.com/symfony/symfony-docs/issues/4265


Symfony Console Helpers

Progress bar

Table

Question

Formatter


<?php// create a new progress bar (10 units)$progress = new ProgressBar($output, 10); // start and displays the progress bar$progress->start(); $i = 0; while ($i++ < 10) { // ... do some work // advance the progress bar 1 unit $progress->advance(); } // ensure that the progress bar is at 100%$progress->finish();

Command.php

Progress bar


We all techies love progress bars


Table

<?php $table = new Table($output); $table ->setHeaders(array('Component', 'Package')) ->setRows(array( array('Console', 'symfony/console'), array('Form', 'symfony/form'), array('Finder', 'symfony/finder'), array('Config', 'symfony/config'), array('...', '...'), )) ; $table->render();

Command.php


Question

<?php

$helper = $this->getHelper('question'); $question = new ConfirmationQuestion( 'Dou you want to play again? ', false ); if (!$helper->ask($input, $output, $question)) { $output->writeln("Bye bye!"); return; } $output->writeln("Let's play again!");

Command.php


Formatter

<?php $formatter = $this->getHelper('formatter'); $formattedLine = $formatter->formatSection( 'Game finished', 'Player one wins.'); $output->writeln($formattedLine); $errorMessages = array( 'Error!', 'Move already done.’ ); $formattedBlock = $formatter ->formatBlock($errorMessages, 'error'); $output->writeln($formattedBlock);

Command.php


Our helper


Board

<?php

// Board example usage $board = new Board( $output, $this->getApplication() ->getTerminalDimensions(), 3, // Board size false // Don’t override the screen );

// Update and display the board status$board->updateGame(0,0,1);

Command.php


Board

<?php

// Board example - four in a row$board = new BoardHelper( $output, $this->getApplication() ->getTerminalDimensions(), 4, // Board size false // Don’t override screen true // Board with backgrounded cells );

// Update the board status (Player 1) $board->updateGame(0,0,1);

// Update the board status (Player 2) $board->updateGame(0,1,2);

Command.php


Board

<?php

// Example TicTacToe with overwrite$board = new TicTacToeHelper( $output, $this->getApplication() ->getTerminalDimensions(), 3, // Board size true // Overwrite screen);

// Update the board status and display$board->updateGame(1,1,1); $board->updateGame(0,0,2); $board->updateGame(2,0,1); $board->updateGame(0,2,2); $board->updateGame(0,1,1); $board->updateGame(2,1,2); $board->updateGame(1,0,1); $board->updateGame(1,2,2); $board->updateGame(2,2,1);

Command.php


Board<?phpnamespace PHPGames\Console\Helper; class Board{ /** * @var \Symfony\Component\Console\Output\OutputInterface */ private $output; /** * Clears the output buffer */ private function clear() { $this->output->write("\e[2J"); } // ...

Board.php

Instruction thatclears the screen


There is a bonus helper


Symfony Console - HAL

<?php

$hal = new HAL($output); $hal->sayHello();

Command.php


Computer model that intends to simulate how the brain works

Artificial Neural Networks


Input neuron

A typical ANN

Hidden neuron

Output neuron

Signal & weight


Activation FunctionsFunctions to process the input and produce a signal as output


Activation Functions• Step - output is 0 or 1

• Linear Combination - output is input sum plus a linear bias

• Continuous Log-Sigmoid


BackpropagationBackward propagation of errors

Passes error signals backwards through the network during training to update the weights of the network


ANN Types


ANN types• Feedforward neural network

Information goes only in one direction, forward.

• Radial basis function network (RBF) Interpolation in multidimensional space.

• Kohonen self-organizing network A set of artificial neurons learn to map points in an input space to coordinates in an output space.


ANN Learning


ANN Learning

• Supervised

• Unsupervised

• Reinforcement

• Supervised

• Unsupervised

• Reinforcement


ANN Learning

• Supervised

• Unsupervised

• Reinforcement


With some slights adaptations to solve

We've used Reinforcement Learning


Temporal Credit Assignment Problem


(WTF) ANN withArtificial Neural Networks with PHP

What The Fann


Meet libfann & PECL fann$~> sudo apt-get install libfann; sudo pecl install fann

(WTF) ANN with


(WTF) ANN with OS X1. Install autoconf 2. Install cmake 3. Compile FANN 4. Install php fann extension with PECL 5. Add the extension to php.ini

$ brew install autoconf



$ brew install cmake



$ cd FANN-2.2.X-Source $ cmake . $ sudo make install



$ sudo pecl install fann



extension=fann.so


Enjoy!

(WTF) ANN with


Show me the code!

(WTF) ANN with


Demo

vs.


The two neurons behind this talk


Eduardo Gulias

• EmailValidator (Symfony >= 2.5, Drupal 8).

• ListenersDebugCommandBundle (ezPublish 5).

• PHPMad UG co-founder (Former Symfony Madrid).

• Team leader at

@egulias


Ariel Ferrandini

• Symfony simple password encoder service. (Symfony >=2.6).

• Symfony DX application collaborator.

• PHPMad UG co-founder.

• Team leader at Paradigma Tecnológico

@aferrandini


Resources• Wikipedia (http://en.wikipedia.org/wiki/Artificial_neural_network)

• Introduction for beginners (http://arxiv.org/pdf/cs/0308031.pdf)

• Introduction to ANN (http://www.theprojectspot.com/tutorial-post/introduction-to-artificial-neural-networks-part-1/7)

• Reinforcement learning (http://www.willamette.edu/~gorr/classes/cs449/Reinforcement/reinforcement0.html)

• PHP FANN (http://www.php.net/fann)


Resources

• Repo PHPGames (https://github.com/phpgames/ANNTicTacToe)

• Repo Board helper (https://github.com/phpgames/BoardHelper)

• Repo HAL helper (https://github.com/phpgames/HALHelper)


Thank you!

https://joind.in/12951


Questions?

https://joind.in/12951

artificial neural network in a tic tac toe symfony console application - symfonycon 2014

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