<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kemke,Christel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Action Ontology Framework for Natural Language Interfaces to Agent Systems An Action Ontology Framework for Natural Language Interfaces to Agent Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Artificial Intelligence Review, Springer</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2007///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.68.4324</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We present in this article an ontological framework, which is specifically aimed at the development of natural language interfaces to agent systems in task-oriented applications. The ontology framework focuses on the representation of action concepts, since they provide, on the one hand, a suitable basis for natural language processing through the use of verb-centered case frames as semantic representation, and, on the other hand, they allow a connection to the action repertoire of the artificial agent system, which is supposed to respond to a user’s verbal requests with suitable actions. Action concepts are arranged in a taxonomical hierarchy and described in a formalism related to description logic. They are characterized through a set of parameters, which refer to object concepts in the knowledge base, and additional, formula-valued attributes specifying preconditions and effects, which define the dynamic aspects of an action 1 An Action Ontology Framework for Natural Language Interfaces to Agent Systems concept. This integrated representation of action and object concepts in the ontology allows us to provide a well-founded and grounded semantics for action concepts. The ontological framework has been used in the development of a variety of virtual agent systems with natural language interfaces, including an interior design system, an automated cook, a navigational and informational guide for our Computer Science Department, and several simulated household robots.</style></abstract></record></records></xml>