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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Train system models with new data available.
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*
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* @package tool_analytics
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* @copyright 2017 David Monllao {@link http://www.davidmonllao.com}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace tool_analytics\task;
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defined('MOODLE_INTERNAL') || die();
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/**
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* Train system models with new data available.
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*
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* @package tool_analytics
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* @copyright 2017 David Monllao {@link http://www.davidmonllao.com}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class train_models extends \core\task\scheduled_task {
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/**
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* get_name
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*
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* @return string
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*/
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public function get_name() {
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return get_string('trainmodels', 'tool_analytics');
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}
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/**
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* Executes the prediction task.
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*
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* @return void
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*/
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public function execute() {
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global $OUTPUT, $PAGE;
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if (!\core_analytics\manager::is_analytics_enabled()) {
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mtrace(get_string('analyticsdisabled', 'analytics'));
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return;
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}
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$models = \core_analytics\manager::get_all_models(true);
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if (!$models) {
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mtrace(get_string('errornoenabledmodels', 'tool_analytics'));
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return;
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}
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foreach ($models as $model) {
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if ($model->is_static()) {
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// Skip models based on assumptions.
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continue;
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}
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if (!$model->get_time_splitting()) {
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// Can not train if there is no time splitting method selected.
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continue;
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}
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$renderer = $PAGE->get_renderer('tool_analytics');
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$result = $model->train();
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// Reset the page as some indicators may call external functions that overwrite the page context.
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\tool_analytics\output\helper::reset_page();
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if ($result) {
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echo $OUTPUT->heading(get_string('modelresults', 'tool_analytics', $model->get_name()));
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echo $renderer->render_get_predictions_results($result, $model->get_analyser()->get_logs());
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}
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}
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}
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}
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