“…Cheung et al, 2006;Godt et al, 2006;Martelloni et al, 2012;Staley et al, 2013;Segoni et al, 2014;Lagomarsino et al, 2015;Gariano et al, 2015;Stähli et al, 2015). The method employed herein, which is called Event, Duration Matrix, Performance (EDuMaP; Calvello and Piciullo, 2016), allows us to consider aspects peculiar to territorial LEWSs that are not considered by the joint frequency distribution approach. In particular, the EDuMaP method takes into account the occurrence of concurrent multiple landslides in the warning zone, the duration of the warnings in relation to the landslides, the issued warning level in relation to the landslide spatial density in the warning zone, and the relative importance attributed, by system managers, to different types of errors.…”