Query Logs Click data can also be aggregated to remove noise Click distribution information can be used to identify clicks that have a higher frequency than would be expected high correlation with relevance e. g using click deviation to filter clicks for preference-generation policies 16/NQuery Logs • Click data can also be aggregated to remove noise • Click distribution information – can be used to identify clicks that have a higher frequency than would be expected – high correlation with relevance – e.g., using click deviation to filter clicks for preference-generation policies 16/N