Associative and Spatial Relationships in Thesaurus-Based Retrieval

The OASIS (Ontologically Augmented Spatial Information System) project explores terminology systems for thematic and spatial access in digital library applications. A prototype implementation uses data from the Royal Commission on the Ancient and Historical Monuments of Scotland, together with the Getty AAT and TGN thesauri. This paper describes its integrated spatial and thematic schema and discusses novel approaches to the application of thesauri in spatial and thematic semantic distance measures. Semantic distance measures can underpin interactive and automatic query expansion techniques by ranking lists of candidate terms. We first illustrate how hierarchical spatial relationships can be used to provide more flexible retrieval for queries incorporating place names in applications employing online gazetteers and geographical thesauri. We then employ a set of experimental scenarios to investigate key issues affecting use of the associative (RT) thesaurus relationships in semantic di...

• Type: Conference
• Year: 2000
• Where: ERCIMDL
• Authors: Harith Alani, Christopher B. Jones, Douglas Tudhope
• Keywords: Education, ERCIMDL 2000, Semantic Distance Measures, Spatial, Thematic Semantic Distance