These dependencies can be exploited to further improve the ED performance for cybersecurity domain in the future research (Li et al., 2013;Nguyen et al., 2016a;Nguyen and Nguyen, 2019).
among the sentences in CySecED, 45.4% of the sentences do not contain any event triggers, 50.0% of the sentences host at least two event triggers, and only 4.6% of the sentences involve a single event trigger.