On organizing and accessing geospatial and georeferenced web resources using the G-portal system

  • Authors:

  • Ee-Peng Lim;Zehua Liu;Ming Yin;Dion Hoe-Lian Goh;Yin-Leng Theng;Wee Keong Ng

  • Affiliations:

  • Centre for Advanced Information Systems, School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore;Centre for Advanced Information Systems, School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore;Centre for Advanced Information Systems, School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore;School of Communications and Information, Nanyang Technological University, Singapore 639798, Singapore;School of Communications and Information, Nanyang Technological University, Singapore 639798, Singapore;Centre for Advanced Information Systems, School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore

  • Venue:
  • Information Processing and Management: an International Journal
  • Year:
  • 2005

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Abstract

In order to organise and manage geospatial and georeferenced information on the Web making them convenient for searching and browsing, a digital portal known as G-Portal has been designed and implemented. Compared to other digital libraries, G-Portal is unique for several of its features. It maintains metadata resources in XML with flexible resource schemas. Logical groupings of metadata resources as projects and layers are possible to allow the entire meta-data collection to be partitioned differently for users with different information needs. These metadata resources can be displayed in both the classification-based and map-based interfaces provided by G-Portal. G-Portal further incorporates both a query module and an annotation module for users to search metadata and to create additional knowledge for sharing respectively. G-Portal also includes a resource classification module that categorizes resources into one or more hierarchical category trees based on user-defined classification schemas. This paper gives an overview of the G-Portal design and implementation. The portal features will be illustrated using a collection of high school geography examination-related resources.