US8839291B1
patent
(57) Methods, systems, and apparatus, including computer pro grams encoded on a computer storage medium, forestimating demographic compositions of television audiences from audience similarities. In an aspect, pairwise cosine similari ties of segment of viewers of rated and unrated television programs are determined, demographic information of rated programs is attributed to the unrated programs from the cosine similarity measures and demographic information for the rated programs.
17 claims. 70,382 characters of text.