There are a multitude of performance measures in statistics and data mining. These tend to have acronyms such as MAPE and RMSE. It turns out that even after spelling them out, it is not always obvious to users how they are computed. Inspired by Don Brown’s The Da Vinchi Code, I devised a deciphering method that allows simple computation of these measures. The trick is to read from right-to-left (like Hebrew or Arabic). Here are two examples: RMSE = Root Mean Squared Error1. Error: compute the errors (actual value – predicted value)2. Squared: take a square of each error3. Mean: … Continue reading Acronyms – in Hebrew???