METHODS AND APPARATUS TO CATEGORIZE MEDIA IMPRESSIONS BY AGE

摘要

Methods, apparatus, and articles of manufacture are disclosed to categorize audience members by age. An example method disclosed herein includes assigning a weight to each audience member record. In the example method, the weight is based on a quantity of audience members in a same age group as the audience member record. The example method includes, at the child nodes, calculating an effective quantity of audience member records based on the weights of the audience member record assigned to the corresponding child node. In the example method, when the effective quantity of audience member records satisfies a minimum leaf size, splitting the corresponding child node into additional ones of the child nodes based on a corresponding child node attribute-value pair. In the example method, when the effective quantity of audience member records does not satisfy the minimum leaf size, designating the corresponding child node as a terminal node.

主权项

1. A method to categorize a media impression, the method comprising:
generating, by executing an instruction with a processor, a plurality of audience member records by associating ages of audience members from a first memory of a first database proprietor at a first Internet domain to the corresponding activity data obtained from a second memory of a second database proprietor at a second Internet domain; assigning, by executing an instruction with the processor, a weight to each audience member record, the weight being based on a quantity of audience members in a same age group as the audience member record; generating, by executing an instruction with the processor, an age-correction model by:
at an initial node, splitting the plurality of audience member records into child nodes based on an initial attribute-value pair;at the child nodes:
calculating an effective quantity of audience member records based on the weight of the audience member record assigned to the corresponding child node;when the effective quantity of audience member records satisfies a minimum leaf size, splitting the corresponding child node into additional ones of the child nodes based on a corresponding child node attribute-value pair; andwhen the effective quantity of audience member records does not satisfy the minimum leaf size, designating the corresponding child node as a terminal node;generating probability density functions to infer probabilities reflecting underrepresented ages in the probability density functions, the probability density functions based on the audience member records assigned to the respective terminal node that includes the underrepresented age samples; and correcting, based on the age-correction model, the age characteristic associated with the media impression, the media impression indicative of a person being exposed to media presented by a media presentation device, the correcting to generate more accurate audience measurement information by including ages that are underrepresented in the probability density functions without consuming additional memory and processor resources to monitor additional audience members in the underrepresented ages.