daniel shiffman

This is a quick visualization of data from the netflix prize. A vertical bar is drawn for every customer rating a movie. Ratings go from 1 to 5 stars (represented top to bottom.) Note how “Alien” (on the left) received many ratings of 4 and 5 stars, but “Predator” (on the right) mostly received ratings [...]

Netflix recently released 100 million movie rating records as part of a contest to improve its movie recommendation system. The problem: I know how I rated a whole bunch of movies. I know how everyone else has rated a whole bunch of movies. For any given movie that I have not yet rated (but others [...]