84views more  JGS 2000»
13 years 5 months ago
Mapping rates associated with polygons
Abstract. Suppose that geographic data under investigation are rates associated with polygons. For example, disease incidence, mortality, and census undercount data may be displaye...
Noel Cressie, Hal S. Stern, Deanne Reber Wright
146views more  VLC 2008»
13 years 5 months ago
Interactive visual analysis of geographic data on mobile devices based on dynamic queries
The capabilities of current mobile devices, especially PDAs, are making it possible to design and develop mobile applications that employ visual techniques for using geographic da...
Stefano Burigat, Luca Chittaro
101views more  IJVR 2007»
13 years 5 months ago
Playful Geospatial Data Acquisition by Location-based Gaming Communities
—The success of Web 2.0 communities demonstrates that the users of an information service are willing to participate in the content creation process on a voluntary basis. In this...
Sebastian Matyas
116views more  ENGL 2007»
13 years 5 months ago
Evacuation Planning using Answer Set Programming: An initial approach
—This paper describes a methodology based on Answer Set Programming (ASP) to work with incomplete geographic data. Source geographic data which describes a risk zone is translate...
Claudia Zepeda, David Sol
161views more  WSCG 2003»
13 years 7 months ago
A Visualization-based Approach to Explore Geographic Metadata
The paper presents a visualization-based approach to explore large databases of geographic metadata. The aim of the data exploration is to search and acquire expressive geographic...
Riccardo Albertoni, Alessio Bertone, Monica De Mar...
13 years 7 months ago
Geographic data clearinghouse activity in GSI
Preparation of geographic metadata and development of geographic data clearinghouses take a very important role to promote dissemination of Geographic data. We would like to intro...
Noriyuki Takakuwa
13 years 7 months ago
Tight Bounds for Point Recolouring
In their paper on delineating boundaries from geographic data, Reinbacher et al. [9] use a recolouring method to reclassify points so that the boundaries that separate points of d...
Yurai Núñez Rodríguez, David ...
13 years 7 months ago
On the Complexity of Point Recolouring in Geometric Graphs
Given a collection of points representing geographic data we consider the task of delineating boundaries based on the features of the points. Assuming that the features are binary...
Henk Meijer, Yurai Núñez Rodrí...
117views Database» more  ER 2009»
13 years 8 months ago
An Ontology-Based Framework for Geographic Data Integration
Ontologies have been extensively used to model domain-specific knowledge. Recent research has applied ontologies to enhance the discovery and retrieval of geographic data in Spatia...
Vânia Maria Ponte Vidal, Eveline R. Sacramen...
13 years 9 months ago
Spatial Data Integrity Constraints in Object Oriented Geographic Data Modeling
An important activity in the design of a particular database application consists in identifying the integrity constraints that must hold on the database, and that are used to det...
Karla A. V. Borges, Alberto H. F. Laender, Clodove...