public function testTwoNodesTwoEdgesNull()
{
$edges = [new Edge("yes", null, new DecisionTreeNode("yes", [new Edge("yes", 4, null)])), new Edge("no", null, new DecisionTreeNode("yes", [new Edge("yes", 8, null)]))];
$decision_tree = new DecisionTree(new DecisionTreeNode("no", $edges));
$score = $decision_tree->calcScore(null, null);
$this->assertEquals(null, $score, "Scores didn't match.");
}
<?php
include 'inc.general.php';
$cmd = Util::makeVar('cmd');
$treeID = Util::makeVar('treeID');
$branchID = Util::makeVar('branchID');
$branchContent = Util::makeVar('branchContent');
$forks = Util::makeVar('forks');
$revision = Util::makeVar('revision');
$tree = new DecisionTree($treeID);
if (!empty($revision)) {
$tree->loadRevision($revision);
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Interactive Decision Tree - Editor</title>
<link href="css/editor.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/editor.js"></script>
</head>
<body>
<h1>Interactive Decision Tree - Editor</h1>
<div id="debug"></div>
<?php
switch ($cmd) {
case 'edit-tree':
case 'new-tree':
<?php
error_reporting(E_ALL | E_STRICT);
echo "Using training data to generate Decision tree...\n";
$dec_tree = new DecisionTree('historical_data.csv', 0);
echo "Decision tree using ID3:\n";
$dec_tree->display();
echo "Prediction on new data set\n";
$dec_tree->predict_outcome('input_data.csv');
exit;
class Tree
{
protected $root;
private $currentNode;
public function __construct($root)
{
$this->root = $root;
}
public function display()
{
$this->root->display(0);
}
}
class Node
{
public $value;
public $namedBranches;
public function __construct($new_item)
{
$this->value = $new_item;
$this->namedBranches = array();
