joomla k2 tag cloud random - php

Question

I am trying to use K2 Tool's tag cloud function on my joomla website but the only setting I can pick is by X Popular Tags which doesn't actually specific what makes the tag popular.
So I am trying to make it so that the tag cloud works as X Random instead. So everytime the page/module is reloaded, X say 20 would display 20 randomly chosen tags.
I look through the module's code and found the function in helper.php but I don't understand how the code select the tags. My guess is if I want to change it to use X random instead of X popular, I would need to change the query for $query?
function tagCloud(&$params) {
$mainframe = &JFactory::getApplication();
$user = &JFactory::getUser();
$aid = (int) $user->get('aid');
$db = &JFactory::getDBO();
$jnow = &JFactory::getDate();
$now = $jnow->toMySQL();
$nullDate = $db->getNullDate();
$query = "SELECT i.id FROM #__k2_items as i";
$query .= " LEFT JOIN #__k2_categories c ON c.id = i.catid";
$query .= " WHERE i.published=1 ";
$query .= " AND ( i.publish_up = ".$db->Quote($nullDate)." OR i.publish_up <= ".$db->Quote($now)." ) ";
$query .= " AND ( i.publish_down = ".$db->Quote($nullDate)." OR i.publish_down >= ".$db->Quote($now)." )";
$query .= " AND i.trash=0 ";
if(K2_JVERSION=='16'){
$query .= " AND i.access IN(".implode(',', $user->authorisedLevels()).") ";
}
else {
$query .= " AND i.access <= {$aid} ";
}
$query .= " AND c.published=1 ";
$query .= " AND c.trash=0 ";
if(K2_JVERSION=='16'){
$query .= " AND c.access IN(".implode(',', $user->authorisedLevels()).") ";
}
else {
$query .= " AND c.access <= {$aid} ";
}
$cloudCategory = $params->get('cloud_category');
if(is_array($cloudCategory)) {
$cloudCategory = array_filter($cloudCategory);
}
if ($cloudCategory) {
if(!is_array($cloudCategory)){
$cloudCategory = (array)$cloudCategory;
}
foreach($cloudCategory as $cloudCategoryID){
$categories[] = $cloudCategoryID;
if($params->get('cloud_category_recursive')){
$children = modK2ToolsHelper::getCategoryChildren($cloudCategoryID);
$categories = #array_merge($categories, $children);
}
}
$categories = #array_unique($categories);
JArrayHelper::toInteger($categories);
if(count($categories)==1){
$query .= " AND i.catid={$categories[0]}";
}
else {
$query .= " AND i.catid IN(".implode(',', $categories).")";
}
}
if(K2_JVERSION == '16') {
if($mainframe->getLanguageFilter()) {
$languageTag = JFactory::getLanguage()->getTag();
$query .= " AND c.language IN (".$db->Quote($languageTag).", ".$db->Quote('*').") AND i.language IN (".$db->Quote($languageTag).", ".$db->Quote('*').") ";
}
}
$db->setQuery($query);
$IDs = $db->loadResultArray();
$query = "SELECT tag.name, tag.id
FROM #__k2_tags as tag
LEFT JOIN #__k2_tags_xref AS xref ON xref.tagID = tag.id
WHERE xref.itemID IN (".implode(',', $IDs).")
AND tag.published = 1";
$db->setQuery($query);
$rows = $db->loadObjectList();
$cloud = array();
if (count($rows)) {
foreach ($rows as $tag) {
if (#array_key_exists($tag->name, $cloud)) {
$cloud[$tag->name]++;
} else {
$cloud[$tag->name] = 1;
}
}
$max_size = $params->get('max_size');
$min_size = $params->get('min_size');
$max_qty = max(array_values($cloud));
$min_qty = min(array_values($cloud));
$spread = $max_qty - $min_qty;
if (0 == $spread) {
$spread = 1;
}
$step = ($max_size - $min_size) / ($spread);
$counter = 0;
arsort($cloud, SORT_NUMERIC);
$cloud = #array_slice($cloud, 0, $params->get('cloud_limit'), true);
uksort($cloud, "strnatcasecmp");
foreach ($cloud as $key=>$value) {
$size = $min_size + (($value - $min_qty) * $step);
$size = ceil($size);
$tags[$counter]-> {'tag'} = $key;
$tags[$counter]-> {'count'} = $value;
$tags[$counter]-> {'size'} = $size;
$tags[$counter]-> {'link'} = urldecode(JRoute::_(K2HelperRoute::getTagRoute($key)));
$counter++;
}
return $tags;
}
}