Methods and apparatus for audience measurement using global signature representation and matching

摘要

Disclosed example methods to determine a time offset between a first media content signature comprising a first sequence of first data pairs and a second media content signature comprising a second sequence of second data pairs include determining a histogram comprising a plurality of bins representative of a plurality of determined time differences. The plurality of determined time differences include each respective time difference determined between each first data pair and second data pair combination. Each respective bin of the histogram represents a respective window of time differences and has a respective value representative of a number of the plurality of determined time differences lying within the respective window of time differences represented by the respective bin. Such disclosed example methods also include selecting at least one bin of the histogram to correspond to the time offset between the first signature and the second signature.