Discovering Significant Sequential Patterns in Data Stream by an Efficient Two-Phase Procedure

Figure 3

A case of creating a subtree and a header table. (a) Subtree of item “F,” (b) the subtree of itemset <C and F>, (c) subtree of item “E,” and (d) subtree of itemset <B and E>.

(a)

(b)

(c)

(d)