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Last Updated: 2020-01-25 15:45:20
A library for machine learning that builds predictions using a linear regression.
License: MIT License
Languages: PHP
PredictionBuilder is a library for machine learning that builds predictions using a linear regression.
This project requires PHP 5.4 or higher because makes use of trait and short array syntax.
You can install the library by Composer. Add this to your project's composer.json:
"require": {
"denissimon/prediction-builder": "*"
}
Then run php composer.phar install
(or composer install
).
use PredictionBuilder\PredictionBuilder;
require_once __DIR__ . '/vendor/autoload.php';
$data = [[1,20],[2,70],[2,45],[3,81],[5,73],[6,80],[7,110]];
$x = 4.5;
// What is the expected y value for a given x value?
try {
$prediction = new PredictionBuilder($x, $data);
$result = $prediction->build(); // y = 76.65
} catch (\Exception $e) {
echo $e->getMessage(), "\n";
}
The returned object has the following properties:
$result->ln_model
linear model that fits the data: "29.56362+10.46364x"
$result->cor
correlation coefficient: 0.8348
$result->x
given x value: 4.5
$result->y
predicted y value: 76.65
Licensed under the MIT License