The ASS-test

The ASS-test The Area Skill Score (ASS)-test is a derivative of the Molchan-test and provides a single robust measure of how well a reference forecast has approximated the observed target earthquake distribution. ASS trajectories -- the normalized area above the corresponding Molchan trajectories as a function of the fraction of space-time occupied by alarm -- are presented for each forecast. The ASS test does not consider the forecasted or observed number of earthquakes.