This paper presents a pragmatic approach to Discourse Representation Theory (DRT) in an attempt to address the pragmatic limitations of DRT (Werth 1999; Simons 2003). To achieve a more pragmatic DRT model, this paper extends standard DRT framework to incorporate more pragmatic elements such as representing agents’ cognitive states and the complex process through which agents recognize utterance...

As described here, pragmatic navigation attempts to harness simple facts about a two-dimensional environment to facilitate travel through it without an explicit map. It relies upon predefined spatial representations whose explicit instances are learned during a sequence of trips through a fixed maze. Once learned, any of these instances can be applied to subsequent travel. Some of the represent...

In this paper, the semantic and pragmatic modules of a spoken dialogue system development platform are presented and evaluated. The main goal of this research is to create spoken dialogue system modules that are portable across applications domains and interaction modalities. We propose a hierarchical semantic representation that encodes all information supplied by the user over multiple dialog...

This paper investigates semantic and pragmatic presupposition in Discourse Representation Theory (DRT) and enhances the pragmatic perspective of presupposition in DRT. In doing so, it draws attention to the need to account for agent presupposition (i.e. both speaker and hearer presupposition) when dealing with pragmatic presupposition. Furthermore, this paper links this pragmatic conception of ...

The literature investigating the notion of presupposition in Discourse Representation Theory (DRT) has mainly been dubbed as being semantic (Simons 2003). This paper investigates the linguistic application of pragmatic-based constraints to the ‘semantic’ notion of presupposition in DRT. By applying pragmatic-based constraints to presuppositional phenomenon, we aim to defend DRT against the accu...

This paper focuses upon features of two-dimensional space that facilitate and/or obstruct travel through it. Three kinds of facilitators and four kinds of obstructers ate identified. For each one, learning algorithms and navigational applications ate proposed. The program described here simulates a robot that learns such features as it encounters them, and then applies them to subsequent travel...

Purpose – The purpose of this paper is to present descriptive characteristics of the historical development of concept networks. The linguistic principles, mechanisms and motivations behind the evolution of concept networks are discussed. Implications emanating from the idea of the historical development of concept networks are discussed in relation to knowledge representation and organization ...