Efstratios Kontopoulos, Nick Bassiliades, Grigoris Antoniou:
Visual Stratification of Defeasible Logic Rule Bases.

In: Proceedings of
19th IEEE International Conference on Tools with Artificial Intelligence (ICTAI 2007), Patras, Greece (29th - 31st October 2007), Organization: IEEE 2, 238-245, October 2007
© IEEE Computer Society

Logic and proofs constitute key factors in increasing the user trust towards the Semantic Web. Defeasible reasoning is a useful tool towards the development of the Logic layer of the Semantic Web architecture. However, having a solid mathematical notation, it may be confusing to end users, who often need graphical trace and explanation mechanisms for the derived conclusions. In a previous work of ours, we outlined a methodology for representing defeasible logic rules, utilizing directed graphs that feature distinct node and connection types. However, visualizing a defeasible logic rule base also involves the placement of the multiple graph elements in an intuitive way, a non-trivial task that aims at improving user comprehensibility. This paper presents a stratification algorithm for visualizing defeasible logic rule bases that query and reason about RDF data as well as a tool that applies this algorithm.



	author = {Efstratios Kontopoulos and Nick Bassiliades and Grigoris Antoniou},
	title = {Visual Stratification of Defeasible Logic Rule Bases},
	booktitle = {Proceedings of 19th IEEE International Conference on Tools with Artificial Intelligence, Patras, Greece (29th--31st October 2007)},
	year = {2007},
	volume = {2},
	organization = {IEEE},
	pages = {238--245},
	url = {}