KR
2010
Springer
14 years 9 months ago
2010
Springer
We consider positive rules in which the conclusion may contain existentially quantified variables, which makes reasoning tasks (such as Deduction) undecidable. These rules have t...
ICCS
2009
Springer
14 years 11 months ago
2009
Springer
This paper is an extended abstract of the talk given at ICCS’09. Rules have long been considered as an essential component of knowledge-based systems. We focus here on conceptual...