Abstract: Methods and apparatus to assign demographic information to panelists are disclosed.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. An example disclosed apparatus disclosed herein includes a database proprietor identifier (DPID) extractor to extract a panelist database proprietor identifier from a cookie, the panelist database proprietor identifier associated with credentials used by a panelist to access a website.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. An example disclosed apparatus disclosed herein includes a database proprietor identifier (DPID) extractor to extract a panelist database proprietor identifier from a cookie, the panelist database proprietor identifier associated with credentials used by a panelist to access a website.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. An example disclosed method includes generating decoy database proprietor identifiers to protect privacies of members of panelist households corresponding to panelist database proprietor identifiers, the decoy database proprietor identifiers to be determined based on a probability density function so that a quantity of the decoy database proprietor identifiers is less than would be used if the decoy database proprietor identifiers were selected by a random selection process. The example method also includes querying a server at a database proprietor using the panelist database proprietor identifiers and the decoy database proprietor identifiers, to obtain demographic information and assigning, by executing an instruction with a processor, the panelist database proprietor identifiers to panelists in the panelist households based on the demographic information obtained from the server at the database proprietor.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. An example disclosed method includes generating decoy database proprietor identifiers to protect privacies of members of panelist households corresponding to panelist database proprietor identifiers, the decoy database proprietor identifiers to be determined based on a probability density function so that a quantity of the decoy database proprietor identifiers is less than would be used if the decoy database proprietor identifiers were selected by a random selection process. The example method also includes querying a server at a database proprietor using the panelist database proprietor identifiers and the decoy database proprietor identifiers, to obtain demographic information and assigning, by executing an instruction with a processor, the panelist database proprietor identifiers to panelists in the panelist households based on the demographic information obtained from the server at the database proprietor.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. Example disclosed apparatus include a decoy generator to generate decoy database proprietor identifiers to protect privacies of members of panelist households corresponding to panelist database proprietor identifiers, the decoy database proprietor identifiers to be determined by the decoy generator based on a probability density function so that a quantity of the decoy database proprietor identifiers is less than would be used if the decoy database proprietor identifiers were selected by a random selection process. The example apparatus also includes a query handler to query, via a network, a server at a database proprietor using the panelist database proprietor identifiers and the decoy database proprietor identifiers, to obtain demographic information.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. Example disclosed apparatus include a decoy generator to generate decoy database proprietor identifiers to protect privacies of members of panelist households corresponding to panelist database proprietor identifiers, the decoy database proprietor identifiers to be determined by the decoy generator based on a probability density function so that a quantity of the decoy database proprietor identifiers is less than would be used if the decoy database proprietor identifiers were selected by a random selection process. The example apparatus also includes a query handler to query, via a network, a server at a database proprietor using the panelist database proprietor identifiers and the decoy database proprietor identifiers, to obtain demographic information.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. Example disclosed methods include generating decoy database proprietor identifiers based on probability density functions. The example method also include querying a database proprietor using panelist database proprietor identifiers and the decoy database proprietor identifiers to obtain demographic information associated with the panelist database proprietor identifiers. The example method also include assigning the panelist database proprietor identifiers to panelists based on the demographic information obtained from the database proprietor.

Abstract: Methods and apparatus to assign demographic information to panelists are disclosed. Example disclosed methods include generating decoy database proprietor identifiers based on probability density functions. The example method also include querying a database proprietor using panelist database proprietor identifiers and the decoy database proprietor identifiers to obtain demographic information associated with the panelist database proprietor identifiers. The example method also include assigning the panelist database proprietor identifiers to panelists based on the demographic information obtained from the database proprietor.