## Star Rating System Implemented

Instructables can now be rated on a 5-star rating scale. So instead of saying that you like an Instructable, you can now say just how much you like it!
Some fancy mathematical formulas were used to convert the previous ratings to the new scale, providing the scores that you see now. These formulas will be getting tweaked as we get some kinks out of the system and fine tune the results, but all of the new ratings will be saved for more accurate results in the future.
So for now, go out and use the stars to more accurately rate new and older Instructables! More ratings will help fine tune future searches and encourage more people to post better Instructables.

active| newest | oldestregardless of how many + votes it got. That seems to indicate that each + simply got translates to a 4-star rating. Unfortunately, that means that a new instructable with a single 5-star vote would get ranked higher than an old favorite with 300 + votes...Most voting schemes like this use something called a

Bayesian estimator, which essentially down-weights options with fewer votes, even if they were high votes. That way, 300 + votes would get ranked ahead of 10 + votes, and 10 + votes should get ranked higher than one 5-star vote.Rating systems are a fairly active area of research - mainly due to their increasing use on the web. Imdb, for example has been using Bayesian estimators and various other tricks for a while, to rank movies based on user votes (there's big money in encouraging or

discouragingpeople to go see movies).Bayesian Rating - how to implement a weighted rating system

Internet Movie Database - Ranking

What does true Bayesian estimate mean in connection with the IMDb Top 250 ratings?

nobodywants to see that many digits! :-D