Mining Network Traffic with the -Means Clustering Algorithm for Stepping-Stone Intrusion Detection

Table 1

All notations used in this paper.

X	A random variable
μ	Mean of a random variable
σ	Standard derivation
k	The number of clusters
ci	The center of the i-th clusters,
C	The set of k centers
Dataset-j	A dataset of RTT values;
	Standard derivation based on the current cluster
	Standard derivation based on the updated cluster