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What's next. Just a thumb up like on Facebook? Rating is a hard problem. No system works universally well. IMDb (Amazon property) for example uses 10 stars, Am

by frik 10y ago

What's next. Just a thumb up like on Facebook? Rating is a hard problem. No system works universally well. IMDb (Amazon property) for example uses 10 stars, Amazon uses five stars. Facebook use thumb up ("likes"). Games ratings are often in percent 1-100% (summarized by metacritics.com and others). School systems around the world use A, B, etc or numbers like 1-5 or 1-6 for grades.

eli 10y ago
HN uses upvotes and flags
lorenzhs 10y ago
You're lumping together different kinds of rating systems. Netflix just wants to recommend you stuff you might like, which is a very different problem from scoring things on an absolute scale (grades, IMDb, game critics). Facebook likes have a social interaction component that's not there in Netflix, so it isn't comparable either.
jerf 10y ago
Netflix lacks the issues that lead Facebook not to implement a thumbs-down. Netflix should still want a thumbs-down. You should also distinguish between aggregate ratings and individual ratings. Metacritic and other aggregators normalize to some scale, but not all the individual reviews use the normalized granularity. A common movie case is Metacritic having to normalize a 5-star, in half-star increments, review to a 100-point scale. I believe Metacritic also allows user reviews to use a 10-point scale, but present the average on a 100-point scale (the first ten integers but with one decimal point, technically allowing 101 ratings from 0.0 to 10.0). Aggregate ratings always have more detail than their constituent parts.
throwaway91111 10y ago
I can safely say up/down voting is pretty terrible across all social media. You end up with HN and Reddit: popularity contests. Meanwhile, popular movies are rarely the ones worth watching, and the top 100 movies on metacritic is a grab bag of (great) movies that probably don't fit your taste profile. Meanwhile, I have to like all the things the same amount. This is just going to lead to me not rating the vast majority of mediocre content on the platform. Why not let you choose as a user?

by frik 10y ago

eli 10y ago

HN uses upvotes and flags

lorenzhs 10y ago

You're lumping together different kinds of rating systems. Netflix just wants to recommend you stuff you might like, which is a very different problem from scoring things on an absolute scale (grades, IMDb, game critics). Facebook likes have a social interaction component that's not there in Netflix, so it isn't comparable either.

jerf 10y ago

Netflix lacks the issues that lead Facebook not to implement a thumbs-down. Netflix should still want a thumbs-down. You should also distinguish between aggregate ratings and individual ratings. Metacritic and other aggregators normalize to some scale, but not all the individual reviews use the normalized granularity. A common movie case is Metacritic having to normalize a 5-star, in half-star increments, review to a 100-point scale. I believe Metacritic also allows user reviews to use a 10-point scale, but present the average on a 100-point scale (the first ten integers but with one decimal point, technically allowing 101 ratings from 0.0 to 10.0). Aggregate ratings always have more detail than their constituent parts.

throwaway91111 10y ago

I can safely say up/down voting is pretty terrible across all social media. You end up with HN and Reddit: popularity contests. Meanwhile, popular movies are rarely the ones worth watching, and the top 100 movies on metacritic is a grab bag of (great) movies that probably don't fit your taste profile. Meanwhile, I have to like all the things the same amount. This is just going to lead to me not rating the vast majority of mediocre content on the platform. Why not let you choose as a user?