public function getRatingData()
{
require_once ROOT_DIR . '/services/API/WorkAPI.php';
$workAPI = new WorkAPI();
$groupedWorkId = $this->getGroupedWorkId();
if ($groupedWorkId == null) {
return null;
} else {
return $workAPI->getRatingData($this->getGroupedWorkId());
}
}
static function getSuggestions($userId = -1)
{
global $configArray;
//Configuration for suggestions
$doNovelistRecommendations = true;
$numTitlesToLoadNovelistRecommendationsFor = 10;
$doMetadataRecommendations = true;
$doSimilarlyRatedRecommendations = false;
$maxRecommendations = 30;
if ($userId == -1) {
global $user;
$userId = $user->id;
}
//Load all titles the user is not interested in
$notInterestedTitles = array();
$notInterested = new NotInterested();
$notInterested->userId = $userId;
$notInterested->find();
while ($notInterested->fetch()) {
$notInterestedTitles[$notInterested->groupedRecordPermanentId] = $notInterested->groupedRecordPermanentId;
}
//Load all titles the user has rated
$allRatedTitles = array();
$allLikedRatedTitles = array();
require_once ROOT_DIR . '/sys/LocalEnrichment/UserWorkReview.php';
$ratings = new UserWorkReview();
$ratings->userId = $userId;
$ratings->find();
while ($ratings->fetch()) {
$allRatedTitles[$ratings->groupedRecordPermanentId] = $ratings->groupedRecordPermanentId;
if ($ratings->rating >= 4) {
$allLikedRatedTitles[] = $ratings->groupedRecordPermanentId;
}
}
// Setup Search Engine Connection
$class = $configArray['Index']['engine'];
$url = $configArray['Index']['url'];
$db = new $class($url);
$suggestions = array();
if ($doNovelistRecommendations) {
//Get a list of all titles the user has rated (3 star and above)
$ratings = new UserWorkReview();
$ratings->whereAdd("userId = {$userId}", 'AND');
$ratings->whereAdd('rating >= 3', 'AND');
$ratings->orderBy('rating DESC, dateRated DESC, id DESC');
//Use just recent ratings to make real-time recommendations faster
$ratings->limit(0, $numTitlesToLoadNovelistRecommendationsFor);
$ratings->find();
//echo("User has rated {$ratings->N} titles<br/>");
require_once ROOT_DIR . '/services/API/WorkAPI.php';
$workApi = new WorkAPI();
if ($ratings->N > 0) {
while ($ratings->fetch()) {
$groupedWorkId = $ratings->groupedRecordPermanentId;
//echo("Found resource for $resourceId - {$resource->title}<br/>");
$ratedTitles[$ratings->groupedRecordPermanentId] = clone $ratings;
$isbns = $workApi->getIsbnsForWork($groupedWorkId);
Suggestions::getNovelistRecommendations($ratings, $groupedWorkId, $isbns, $allRatedTitles, $suggestions, $notInterestedTitles);
/*if (count($suggestions) >= $maxRecommendations){
break;
}*/
}
}
}
if ($doSimilarlyRatedRecommendations && count($suggestions) < $maxRecommendations) {
//Get a list of all titles the user has rated (3 star and above)
$ratings = new UserWorkReview();
$ratings->whereAdd("userId = {$userId}", 'AND');
$ratings->whereAdd('rating >= 3', 'AND');
$ratings->orderBy('rating DESC, dateRated DESC, id DESC');
//Use just recent ratings to make real-time recommendations faster
$ratings->limit(0, $numTitlesToLoadNovelistRecommendationsFor);
$ratings->find();
//echo("User has rated {$ratings->N} titles<br/>");
require_once ROOT_DIR . '/services/API/WorkAPI.php';
$workApi = new WorkAPI();
if ($ratings->N > 0) {
while ($ratings->fetch()) {
Suggestions::getSimilarlyRatedTitles($workApi, $db, $ratings, $userId, $allRatedTitles, $suggestions, $notInterestedTitles);
}
}
}
//Get metadata recommendations if enabled, we have ratings, and we don't have enough suggestions yet
if ($doMetadataRecommendations && count($allLikedRatedTitles) > 0 && count($suggestions) < $maxRecommendations) {
//Get recommendations based on everything I've rated using more like this functionality
$class = $configArray['Index']['engine'];
$url = $configArray['Index']['url'];
/** @var Solr $db */
$db = new $class($url);
//$db->debug = true;
$moreLikeTheseSuggestions = $db->getMoreLikeThese($allLikedRatedTitles, $notInterestedTitles);
foreach ($moreLikeTheseSuggestions['response']['docs'] as $suggestion) {
if (!array_key_exists($suggestion['id'], $allRatedTitles) && !array_key_exists($suggestion['id'], $notInterestedTitles)) {
$suggestions[$suggestion['id']] = array('rating' => $suggestion['rating'] - 2.5, 'titleInfo' => $suggestion, 'basedOn' => 'MetaData for all titles rated');
}
if (count($suggestions) == $maxRecommendations) {
break;
}
}
}
//sort suggestions based on score from ascending to descending
uasort($suggestions, 'Suggestions::compareSuggestions');
//Only return up to $maxRecommendations suggestions to make the page size reasonable
$suggestions = array_slice($suggestions, 0, $maxRecommendations, true);
//Return suggestions for use in the user interface.
return $suggestions;
}
public function getRatingData()
{
require_once ROOT_DIR . '/services/API/WorkAPI.php';
$workAPI = new WorkAPI();
return $workAPI->getRatingData($this->getPermanentId());
}
