/**
* method returns object IDs that user interacted (explicit/implicit) with
* usable for decision which method to use
* @param $eventType type of the interaction: "implicit" or "explicit"
* @return <type> array of objectIDs
*/
public static function getInteractedObjects($eventType)
{
if ($eventType == "implicit") {
$table = Config::$implicitEventStorageTable;
} else {
if ($eventType == "explicit") {
$table = Config::$explicitEventStorageTable;
} else {
return false;
}
}
$query = "select distinct `objectID` from `" . $table . "`\n where `userID`=" . ComponentCore::getUserId() . " ";
$database = ComponentDatabase::get_instance();
$qr = $database->executeQuery($query);
$objectsList = $qr->getResponseList();
while ($record = $database->getNextRow($objectsList)) {
$res[] = $record["objectID"];
}
return $res;
}
<?php
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
echo $_POST["objectID"] . $_POST["eventName"] . $_POST["eventValue"];
require_once "../public/ComponentCore.php";
ComponentCore::loadCoreEvents();
if (strpos($_POST["objectID"], ",") !== false) {
$object = explode(",", $_POST["objectID"]);
} else {
$object = $_POST["objectID"];
}
$aggregatedEvent = new AggregatedDataEvent($object, $_POST["eventName"], $_POST["eventValue"]);
$eHandler = new AggregatedEventHandler($aggregatedEvent);
$eHandler->saveEvent();
/**
* find for the userID of the existing user or creates a new one
*/
private static function createUser()
{
$userHandler = new UserHandler();
ComponentCore::$userID = $userHandler->getUserID();
ComponentCore::$sessionID = $userHandler->getSession();
}
/**
*returns $noOfObjects of the best rated objects for the group of $usersArray users
* method aggregates object scores in eventValues for users specified in $usersArray of events from $implicitEventsList and $explicitEventsList
* @param <type> $usersArray array of ("userID => weight(similarity) of user:element of (0,1] interval )
* @param <type> $noOfObjects number of similar objects, we search for
* @param <type> $implicitEventsList array of calculated implicitEvents
* @param <type> $explicitEventsList array of calculated explicitEvents
* @return <type> array( objectID => score ) )
* @return <type>
*/
public function getBestObjectForUsers($usersArray, $noOfObjects, $objectList = "", $implicitEventsList = "", $explicitEventsList = "")
{
$implicitTable = Config::$implicitEventStorageTable;
$explicitTable = Config::$explicitEventStorageTable;
$this->users = $usersArray;
$this->objectToScoreArray = array();
$this->userID = ComponentCore::getUserId();
$database = ComponentDatabase::get_instance();
$objectRestrictionQuery = "\n SELECT distinct (`objectID`)\n FROM `" . $implicitTable . "`\n WHERE `userID`=" . $this->userID . " \n and `eventType`= \"object_shown_in_list\"\n and `eventValue` >= 3\n ";
$objectAllowedQuery = "\n SELECT distinct (`objectID`)\n FROM `" . $implicitTable . "`\n WHERE `userID`=" . $this->userID . " \n and `eventType`= \"pageview\"\n and `eventValue` >= 1\n ";
$shownArray = array();
$qrs = $database->executeQuery($objectRestrictionQuery);
$shownObjects = $qrs->getResponseList();
while ($recordSL = $database->getNextRow($shownObjects)) {
$shownArray[] = $recordSL["objectID"];
}
$allowedArray = array();
$qra = $database->executeQuery($objectAllowedQuery);
$allowedObjects = $qra->getResponseList();
while ($recordAO = $database->getNextRow($allowedObjects)) {
$allowedArray[] = $recordAO["objectID"];
}
$restrictedObjects = array_diff($shownArray, $allowedArray);
if (sizeof($restrictedObjects) > 0) {
$objectQuery = "`objectID` not in (" . implode(", ", $restrictedObjects) . ")";
} else {
$objectQuery = " 1 ";
}
//forming user array into the query
if (is_array($this->users) and sizeof($this->users) != 0) {
$userQuery = "`userID` in (";
$first = 1;
foreach ($this->users as $user => $val) {
if ($first) {
$first = 0;
$userQuery .= $user;
} else {
$userQuery .= ", " . $user;
}
}
$userQuery .= ")";
} else {
return false;
}
//implicit events
if (is_array($implicitEventsList) and sizeof($implicitEventsList) != 0) {
//forming $implicitEventsList into the query
$eventQuery = "`eventType` in (";
$first = 1;
foreach ($implicitEventsList as $eType) {
if ($first) {
$first = 0;
$eventQuery .= "\"" . $eType . "\"";
} else {
$eventQuery .= ", \"" . $eType . "\"";
}
}
$eventQuery .= ")";
$queryImplicit = "select distinct `userID`,`objectID`,`eventType`,`eventValue`\n from `" . $implicitTable . "`\n where " . $userQuery . " and " . $eventQuery . " and " . $objectQuery . "\n order by `objectID` ";
echo "<!--QueryCollaborativeNegPref " . $queryImplicit . "-->";
$this->usersToObjectRate($queryImplicit);
}
if (is_array($explicitEventsList) and sizeof($explicitEventsList) != 0) {
//forming $implicitEventsList into the query
$eventQuery = "`eventType` in (";
$first = 1;
foreach ($explicitEventsList as $eType) {
if ($first) {
$first = 0;
$eventQuery .= "\"" . $eType . "\"";
} else {
$eventQuery .= ", \"" . $eType . "\"";
}
}
$eventQuery .= ")";
$queryExplicit = "select distinct `userID`,`objectID`,`eventType`,`eventValue`\n from `" . $explicitTable . "`\n where " . $userQuery . " and " . $eventQuery . "\n order by `objectID` ";
//echo $queryExplicit;
$this->usersToObjectRate($queryExplicit);
}
if (!$useImplicit and !$useExplicit) {
$errLog = ErrorLog::get_instance();
$errLog->logError("No implicit or explicit events specified, no prediction made", "Standard");
}
//rating of object finished - filter, sort + return the best
arsort($this->objectToScoreArray);
if (is_array($objectList) and sizeof($objectList) != 0) {
$i = 0;
$j = 0;
$all_objects = array_keys($this->objectToScoreArray);
$res_objects = array();
while ($i < $noOfObjects and $j <= sizeof($all_objects)) {
if (in_array($all_objects[$j], $objectList)) {
$res_objects[$all_objects[$j]] = $this->objectToScoreArray[$all_objects[$j]];
$i++;
}
$j++;
}
echo "<!-- resObjectCollab";
print_r($res_objects);
echo "-->";
return $res_objects;
} else {
return array_slice($this->objectToScoreArray, 0, $noOfObjects, TRUE);
}
}
