Methods and apparatus to analyze and adjust demographic information

1. A system to adjust demographic data, comprising:

means for generating a first model based on reference demographic data corresponding to panelists, and based on second demographic data and behavioral data from a database proprietor that is separate from a first entity, the reference demographic data collected from the panelists by the first entity and stored by the first entity, and the second demographic data and the behavioral data corresponding to ones of the panelists having user accounts with the database proprietor;

means for analyzing an output of the first model, the output including the second demographic data partitioned into a plurality of nodes, each node representing a respective subset of the second demographic data;

means for redistributing at least some of the second demographic data between at least some of the nodes to generate a second model; and

means for processing to:

apply the second model to third demographic data of the database proprietor; and

based on an output of the second model, determine whether to adjust at least some of the third demographic data.

2. The system as defined in claim 1 , wherein the third demographic data corresponds to registered users of the database proprietor.

3. The system as defined in claim 2 , wherein the registered users include non-panelists.

4. The system as defined in claim 1 , wherein the third demographic data corresponds to users for which impressions to advertisements are logged when the advertisements are rendered on computers of the users.

5. The system as defined in claim 1 , wherein the database proprietor provides a social networking service to registered users including non-panelists and the ones of the panelists having the user accounts with the database proprietor.

6. The system as defined in claim 1 , wherein the behavioral data includes at least one of a quantity of user connections, a quantity of mobile webpage views, an indicated year of school graduation, a median year of school graduation for persons corresponding to the user connections, and a percent of friends that are female.

7. The system as defined in claim 1 , further including:

means for logging first impressions at a first internet domain of the first entity based on first network communications from client devices received at a first server of the first internet domain, the first network communications indicative of accesses to media at the client devices, the accesses to the media corresponding to the behavioral data; and

means for instructing the client devices, by sending redirect network communications from the first server of the first internet domain to the client devices, to send third network communications to a second server of a second internet domain corresponding to the database proprietor, the third network communications to cause the second server to log second impressions indicative of the accesses to the media.

8. A system to adjust demographic data, comprising:

means for generating a first model based on reference demographic data corresponding to panelists and collected by a first entity, and based on first self-reported demographic data and behavioral data from a database proprietor that is separate from the first entity, the first self-reported demographic data and the behavioral data corresponding to ones of the panelists having user accounts with the database proprietor, and the first self-reported demographic data provided to the database proprietor by the ones of the panelists having the user accounts with the database proprietor;

means for partitioning the first self-reported demographic data into a plurality of nodes based on the first model, each node representing a respective subset of the first self-reported demographic data; and

means for redistributing at least some of the first self-reported demographic data between at least some of the nodes to generate a second model, the second model structured to facilitate adjusting second self-reported demographic data of the database proprietor to correct at least one of inaccuracies or misrepresentations in the second self-reported demographic data.

9. The system as defined in claim 8 , wherein the second model is structured to facilitate correcting the second self-reported demographic data by facilitating determining whether to adjust at least some of the second self-reported demographic data based on a statistical analysis of an output of the second model.

10. The system as defined in claim 8 , wherein the second self-reported demographic data corresponds to registered users of the database proprietor.

11. The system as defined in claim 10 , wherein the registered users include non-panelists.

12. The system as defined in claim 8 , wherein the second self-reported demographic data corresponds to users for which impressions to advertisements are logged when the advertisements are rendered on computers of the users.

13. The system as defined in claim 8 , wherein the database proprietor is to provide a social networking service to registered users including non-panelists and the ones of the panelists having the user accounts with the database proprietor.

14. The system as defined in claim 8 , wherein the behavioral data includes at least one of a quantity of user connections, a quantity of mobile webpage views, an indicated year of school graduation, a median year of school graduation for persons corresponding to the user connections, or a percent of friends of a specific gender.

15. The system as defined in claim 8 , wherein the first self-reported demographic data is collected by the database proprietor from the ones of the panelists having the user accounts with the database proprietor, and the first self-reported demographic data is stored by the database proprietor.

16. A system to adjust demographic data, comprising:

a first server to:

log first impressions at a first internet domain of a first entity based on first network communications from client devices received at the first server of the first internet domain, the first network communications indicative of accesses to a webpage at the client devices, and

instruct the client devices, by sending redirect network communications from the first server of the first internet domain to the client devices, to send third network communications to a second server of a second internet domain corresponding to a database proprietor that is separate from the first entity, the third network communications to cause the second server to log second impressions indicative of the accesses to the webpage;

a modeler to generate a first model based on reference demographic data corresponding to panelists, and based on second demographic data and behavioral data from the database proprietor, the behavioral data corresponding to the second impressions indicative of the accesses to the webpage, the reference demographic data collected from the panelists by the first entity and stored by the first entity, and the second demographic data and the behavioral data corresponding to ones of the panelists having user accounts with the database proprietor;

an analyzer to analyze an output of the first model, the output including the second demographic data partitioned into a plurality of nodes, each node representing a respective subset of the second demographic data;

an adjuster to redistribute at least some of the second demographic data between at least some of the nodes to generate a second model; and

a processor to:

apply the second model to third demographic data of the database proprietor, and

based on an output of the second model, determine whether to adjust at least some of the third demographic data.

17. The system as defined in claim 16 , wherein the third demographic data corresponds to registered users of the database proprietor.

18. The system as defined in claim 17 , wherein the registered users include non-panelists.

19. The system as defined in claim 16 , wherein the third demographic data corresponds to users for which impressions to advertisements are logged when the advertisements are rendered on computers of the users.

20. The system as defined in claim 16 , wherein the database proprietor provides a social networking service to registered users including non-panelists and the ones of the panelists having the user accounts with the database proprietor.

21. The system as defined in claim 16 , wherein the behavioral data includes at least one of a quantity of user connections, a quantity of the accesses to the webpage, an indicated year of school graduation, a median year of school graduation for persons corresponding to the user connections, and a percent of friends that are female.