@paper{FLAIRS09138,
author = {Zina Ibrahim and Ahmed Tawfik and Alioune Ngom},
title = {A Surprise-based Qualitative Calculus},
conference = {Florida Artificial Intelligence Research Society Conference},
year = {2009},
keywords = {qualitative reasoning; reasoning with uncertainty},
abstract = {This paper introduces a qualitative ranking function that uses signed integers to describe the surprise associated with the occurrence of events. The measure introduced, kappa++, is based on the kappa calculus but differs from it in that its semantics enable an explicit representation of complements. As a result, the kappa++ is more capable of enforcing probability theory-like constraints to carry on reasoning.},
url = {http://www.aaai.org/ocs/index.php/FLAIRS/2009/paper/view/138}
}