[FEATURE REQUEST] Ratings average should be weighted towards most recent semester

[dcrosby9]

In the case of course https://www.omscentral.com/courses/introduction-to-computer-vision/reviews, it sounds like the ratings were in the 4's years ago, but in the 1's more recently. This site is still showing an overall average of nearly 4 making it look like an excellent class, which could entirely mislead a student and defeat the purpose of having an average of the review scores in the first place.

If it is difficult to weight more recent reviews more heavily, then simply limit the time threshold for the average to about 1 year or so.