the user Id
the client Id or None
the siteId or None
the features related to this query
the client Id or None
the client Id or None
the features related to this query
the features related to this query
the siteId or None
the siteId or None
the user Id
Represents a query to retrieve a recommendation for a user id.
the user Id
the client Id or None
the siteId or None
the features related to this query