I came across the concept of Root Mean Square Error (RMSE) two days ago at work, while investigating 3-D localization using Google Cartographer . I was familiar with the difference between RMSE and standard deviation previously, but at work I seemed to have gotten them mixed up (again). Like various other concepts that I frequently learned to forget, I figured I should write it down somewhere in case I need a quick refresher, hence this post. To get started, let's begin with their similarities. The standard deviation, generally represented by the Greek lowercase sigma letter \sigma, and the RMSE are similar mathematically: they are both metrics to measure the variance of a variable from a reference . Put simply, they tell you how much a variable you are measuring/estimating 1 vary from a reference. For example, if you get a high value in \sigma or RMSE, you know that the variable that you are measuring/esti...
Untitled, for now.
An account of my learning experience.