Introduction

GIS Textual Knowledge Sources have been derived from three information sources: GeoRef from GeoRef Information Services, American Geological Institute (AGI), Petroleum Abstracts (PA) from Petroleum Abstracts Service, University of Tulsa, and Compendex from Engineering Information, Inc. (Ei)). There are 46 concept spaces generated automatically: 3 from GeoRef, 1 from PA, and 42 from Compendex. In addition, the GeoRef Thesaurus from GeoRef Information Services has been converted to a searchable service. All these textual knowledge sources serve the need of gathering closely related concepts in the geoscience domain area. Other than searching, a 2-dimensional categorization map, automatically generated by Kohonen-based self-organizing map (SOM) algorithm, shows categories in a sub-collection of GeoRef.

Instruction

By following the URL below, select one of the knowledge sources. A form will be presented for searching request. Both GeoRef and PA knowledge sources offer only independent concept space accessing. Compendex knowledge source provides an integrated concept space search over all possible combinations of domain areas. URL: http://ai10.bpa.arizona.edu/gis/

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