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✏️ Editing: evaluate_model.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Evaluates the provided model.
 *
 * @package    tool_analytics
 * @copyright  2016 David Monllao {@link http://www.davidmonllao.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

define('CLI_SCRIPT', true);

require_once(__DIR__ . '/../../../../config.php');
require_once($CFG->libdir.'/clilib.php');

$help = "Evaluates the provided model.

Options:
--modelid              Model id
--list                 List models
--non-interactive      Not interactive questions
--analysisinterval     Restrict the evaluation to 1 single analysis interval (Optional)
--mode                 'configuration' or 'trainedmodel'. You can only use mode=trainedmodel when the trained" .
    " model was imported" . "
--reuse-prev-analysed  Reuse recently analysed courses instead of analysing the whole site. Set it to false while" .
    " coding indicators. Defaults to true (Optional)" . "
-h, --help             Print out this help

Example:
\$ php admin/tool/analytics/cli/evaluate_model.php --modelid=1 --analysisinterval='\\core\\analytics\\time_splitting\\quarters'
";

// Now get cli options.
list($options, $unrecognized) = cli_get_params(
    array(
        'help'                  => false,
        'modelid'               => false,
        'list'                  => false,
        'analysisinterval'      => false,
        'mode'                  => 'configuration',
        'reuse-prev-analysed'   => true,
        'non-interactive'       => false,
    ),
    array(
        'h' => 'help',
    )
);

if ($options['help']) {
    echo $help;
    exit(0);
}

if (!\core_analytics\manager::is_analytics_enabled()) {
    echo get_string('analyticsdisabled', 'analytics') . PHP_EOL;
    exit(0);
}

if ($options['list']) {
    \tool_analytics\clihelper::list_models();
    exit(0);
}

if ($options['modelid'] === false) {
    // All actions but --list require a modelid.
    echo $help;
    exit(0);
}

if ($options['mode'] !== 'configuration' && $options['mode'] !== 'trainedmodel') {
    cli_error('Error: The provided mode is not supported');
}

if ($options['mode'] == 'trainedmodel' && $options['analysisinterval']) {
    cli_error('Sorry, no analysis interval can be specified when using \'trainedmodel\' mode.');
}

// We need admin permissions.
\core\session\manager::set_user(get_admin());

$model = new \core_analytics\model($options['modelid']);

mtrace(get_string('analysingsitedata', 'tool_analytics'));

if ($options['reuse-prev-analysed']) {
    mtrace(get_string('evaluationinbatches', 'tool_analytics'));
}

$renderer = $PAGE->get_renderer('tool_analytics');

$analyseroptions = array(
    'timesplitting' => $options['analysisinterval'],
    'reuseprevanalysed' => $options['reuse-prev-analysed'],
    'mode' => $options['mode'],
);
// Evaluate its suitability to predict accurately.
$results = $model->evaluate($analyseroptions);

// Reset the page as some indicators may call external functions that overwrite the page context.
\tool_analytics\output\helper::reset_page();

echo $renderer->render_evaluate_results($results, $model->get_analyser()->get_logs());

// Check that we have, at leasa,t 1 valid dataset (not necessarily good) to use.
foreach ($results as $result) {
    if ($result->status !== \core_analytics\model::NO_DATASET &&
            $result->status !== \core_analytics\model::GENERAL_ERROR) {
        $validdatasets = true;
    }
}

if (!empty($validdatasets) && !$model->is_enabled() && $options['non-interactive'] === false) {

// Select a dataset, train and enable the model.
    $input = cli_input(get_string('clienablemodel', 'tool_analytics'));
    while (!\core_analytics\manager::is_valid($input, '\core_analytics\local\time_splitting\base') && $input !== 'none') {
        mtrace(get_string('errorunexistingtimesplitting', 'analytics'));
        $input = cli_input(get_string('clienablemodel', 'tool_analytics'));
    }

if ($input === 'none') {
        exit(0);
    }

// Refresh the instance to prevent unexpected issues.
    $model = new \core_analytics\model($options['modelid']);

// Set the time splitting method file and enable it.
    $model->enable($input);

mtrace(get_string('trainandpredictmodel', 'tool_analytics'));

// Train the model with the selected time splitting method and start predicting.
    $model->train();
    $model->predict();
}

exit(0);

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