@inproceedings{bell97agent, title = {Dynamic goal hierarchies}, address = {Cairns, Australia}, author = {John Bell and Zhisheng Huang}, booktitle = {Workshop on Intelligent Agent Systems: Theoretical and Practical Issues}, journal = {LNCS}, month = {August}, pages = {88--103}, url = {http://dx.doi.org/10.1007/3-540-62686-7_30}, volume = {1209}, year = {1996}, biburl = {http://www.bibsonomy.org/bibtex/2d85f53012722af1944d9c3471de09841/neilernst}, description = {SpringerLink - Book Chapter}, abstract = {In this paper we introduce and formalise dynamic goal hierarchies. We begin with a formal definition of goals, according to which they are rational desires. In particular, we require that an agent's goals are coherent; that is, that the agent believes that each goal is jointly realisable with all of the goals which the agent considers to be more important. Thus an agent's goals form a hierarchy, and new goals are defined with reference to it. We then show how preferential entailment can be used to formalise the rational revision of goals and goal hierarchies. ER -}, keywords = {goal revision } }