Concept Tree-Based Event Matching Algorithm in Publish/Subscribe Systems

Table 1

Parameter settings.

Parameter name	Parameter value	Memo
Attribute number with concept tree	6
Attribute value number with concept tree	4
Attribute value number with basic type	2	xsd:decimal
Height of concept tree	1∼5	Tree with only root node has height 0
Width of concept tree	2	Each nonleaf node has 2 child nodes
Nodes (edges) of subscription/event graph	7(6)	7 nodes, 6 edges
Subscription number	500 ∼ 10000
Event number	1000