public function getIndex()
{
$visualizations = [];
for ($i = 0; $i < 8; $i++) {
$visualizations[] = \App\Visualization::all()[$i];
}
return view('user.userpreference', ['visualizations' => $visualizations]);
}
public function generateUserRating($visualizationid, $neighbors, $minVisRating)
{
$visualizationVectors = $this->generateVectors();
$vectors = [];
$vector = $visualizationVectors[$visualizationid - 1];
for ($i = 1; $i <= count($visualizationVectors); $i++) {
if (count(Visualization::all()[$i - 1]->users) >= $minVisRating) {
$similaritem = (object) [];
if ($i == $visualizationid) {
} else {
$similaritem->similarity = $this->vectorSimilarity($vector, $visualizationVectors[$i]);
$similaritem->visualization = $i;
$vectors[] = $similaritem;
}
} else {
// skip if the visualization does not have enough rating by the users
}
}
// sort mapping
usort($vectors, array("App\\Http\\Controllers\\RatingController", "compareSimilarity"));
$similaritems = [];
for ($i = 0; $i < $neighbors && $i < count($vectors); $i++) {
$similaritems[] = $vectors[$i];
}
if (count($similaritems) === 0) {
return null;
} else {
return $this->generatePrediction($similaritems, $visualizationVectors);
}
}
