review bots

Strange distribution of ratings on episode one of Oshi no Ko, which is extremely likely to be caused by bots. There are a lot of 8, 7, 6, 5, 2, and 1 ratings, and looking at the ratings by country shows how strange the distributions are. The country with the most ratings is Colombia, and it essentially only has 8, 7, and 6 ratings and a small amount of 10 and 9 ratings, which are likely to be legitimate ones as they match what the episode’s total weighted mean used to look like. The unweighted mean is 7.1, while the weighted score shows 6.8, so the weighing system likely allowed the fraudulent reviews to pass but not the real ones. The bots are probably also not exclusive to Colombia as you can still see the trend of 8, 7, 6 and some 5 ratings from other countries.

https://www.imdb.com/title/tt27033613/ratings/

This image I got from archive.org is what the distribution used to look like