prepositions

Applying Computational Models of Spatial Prepositions to Visually Situated Dialog

Journal Volume: 
35
Journal Issue: 
2
Pages: 
271–306
Authors: 
John D. Kelleher, Fintan J. Costello
Article Link: 

This article describes the application of computational models of spatial prepositions to visually situated dialog systems. In these dialogs, spatial prepositions are important because people often use them to refer to entities in the visual context of a dialog. We first describe a generic architecture for a visually situated dialog system and highlight the interactions between the spatial cognition module, which provides the interface to the models of prepositional semantics, and the other components in the architecture.

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The Syntax and Semantics of Prepositions in the Task of Automatic Interpretation of Nominal Phrases and Compounds: A Cross-Linguistic Study

Journal Volume: 
35
Journal Issue: 
2
Pages: 
185–228
Authors: 
Roxana Girju
Article Link: 

In this article we explore the syntactic and semantic properties of prepositions in the context of the semantic interpretation of nominal phrases and compounds. We investigate the problem based on cross-linguistic evidence from a set of six languages: English, Spanish, Italian, French, Portuguese, and Romanian. The focus on English and Romance languages is well motivated. Most of the time, English nominal phrases and compounds translate into constructions of the form N P N in Romance languages, where the P (preposition) may vary in ways that correlate with the semantics.

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Exploiting Semantic Role Resources for Preposition Disambiguation

Journal Volume: 
35
Journal Issue: 
2
Pages: 
151–184
Authors: 
Tom O'Hara, Janyce Wiebe
Article Link: 

This article describes how semantic role resources can be exploited for preposition disambiguation. The main resources include the semantic role annotations provided by the Penn Treebank and FrameNet tagged corpora. The resources also include the assertions contained in the Factotum knowledge base, as well as information from Cyc and Conceptual Graphs. A common inventory is derived from these in support of definition analysis, which is the motivation for this work.

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