4 ms·
I'd love to see an update here that: * Included a graph of the resulting ordering of the two dimensional plane and some examples * Included consideration of 5
by mbauman 5y ago
I'd love to see an update here that:
* Included a graph of the resulting ordering of the two dimensional plane and some examples
* Included consideration of 5- or 10-star scales.
- ScoutOrgo 5y agoThe formula still works for scales of 5 or 10, you just have to divide by the max rating first and then multiply by it again at the end. For example a 3/5 stars turns into 0.6 positive and 0.4 negative observation. Following the formula from there will give a lower bound estimation between 0 and 1, so then you just multiple by 5 again to get it between 0 and 5.
- abetusk 5y agoThey have an article about K-star rating systems [0] which uses Bayesian approximation [1] [2] (something I know little to nothing about, I'm just regurgitating the article). There's a whole section on their website that has different statistics for programmers, including rating systems [3]. [0] https://www.evanmiller.org/ranking-items-with-star-ratings.html https://www.evanmiller.org/ranking-items-with-star-ratings.h... [1] https://en.wikipedia.org/wiki/Approximate_Bayesian_computation https://en.wikipedia.org/wiki/Approximate_Bayesian_computati... [2] https://www.evanmiller.org/bayesian-average-ratings.html https://www.evanmiller.org/bayesian-average-ratings.html [3] https://www.evanmiller.org/ https://www.evanmiller.org/ ("Mathematics of user ratings" section)