I've been using the curve fitting toolbox to fix a set of point cloud data. In the goodness of fit evaluations, I can see two different RMSE: RMSE and Validation RMSE. Would someone please explain what's the difference between the two RMSEs and why they are different in value?
It feels like the "validation RMSE" is the RMSE error between the actual point cloud surface and the fitted surface. However, if this is the case, then what is the RMSE (or non-validation RMSE)? I can't find a detailed explaination online, so hope someone would help me. Thanks.