The author nails it when he/she points out that star ratings don't reveal how good a movie is for you ("the movies appeal to different kinds of people"), but then goes on to propose a 2-dimensional metric that still doesn't capture the personalization aspect ("rewatchability" doesn't say much about how good a movie is for me).
IMO movie ratings should iterate on Amazon's powerful statement "People that bought this item also bought...". That is, one should look at people with similar tastes and see how those people have rated the movie.
Easier said than done as it needs a ton of data in order for it to work, but that's the only way you're going to get close to more personalized ratings.
Yes. The scatter plot is just a different version of how others felt about the movie. It does not communicate how that movie is related to other movies (that I have rated), nor does it inform me of how similar I am to the people who rated the movie. Personalization is missing.
IMO movie ratings should iterate on Amazon's powerful statement "People that bought this item also bought...". That is, one should look at people with similar tastes and see how those people have rated the movie.
Easier said than done as it needs a ton of data in order for it to work, but that's the only way you're going to get close to more personalized ratings.