| CPC G06Q 30/0242 (2013.01) | 21 Claims | 

| 
               1. A computing system to determine census-based audience metrics of media across multiple demographics, the computing system comprising: 
            memory; and 
                one or more processors coupled to the memory and configured to: 
              determine a plurality of cross-demographic total census parameter values based on ratios of third-party impression counts and third-party audience sizes; 
                  select a first cross-demographic total census parameter value as an upper bound constraint from the plurality of cross-demographic total census parameter values based on comparisons between ones of the plurality of cross-demographic total census parameter values; 
                  select a second cross-demographic total census parameter value from the plurality of cross-demographic total census parameter values based on the second cross-demographic total census parameter value being less than the upper bound constraint; 
                  determine a first census-level audience size based on the second cross-demographic total census parameter value; 
                  determine a first census-level impression count based on the second cross-demographic total census parameter value; 
                  store the first census-level audience size and the first census-level impression count in the memory; and 
                  send the first census-level audience size and the first census-level impression count to a network-connected device. 
                 |