Decision boundaries (green contours) defined by the hyperplanes found by the SVM classification model for a 24 h time boundary that are best at separating the outputs of the linear regression dataset. NF (green dots) constitutes the class representing nonflaring active regions. The NF data points are well separated from the flaring classes (data points in blue and red), whereas the separation boundary for flares occurring within the next 24 hours is more diffuse.