The Application of Baum-Welch Algorithm in Multistep Attack

Table 8

The comparison of results.

	𝑝(alerts∣DDoS_HMM)	𝑝(alerts∣FTP Bounce_HMM)	𝑝(alerts∣DDoS_HMM)
			𝑝(alerts∣FTP Bounce_HMM)
Before training	0.1225	0.0079	15.5
After training	0.2989	0.0036	83.0