Event-based Specification for Managing Change History of Geographic Information
نویسندگان
چکیده
In this paper, we propose a data model to manage dynamic aspects of geographic information. In our model, a geographic change is represented as an event. Three relations are defined on events: they are is-a relation, partof relation, and event-driven relation. We implemented a prototype system, and confirmed that our model is adaptable to searching dynamic aspects of geographic information based on real world phenomena.
منابع مشابه
Implementation of a Rule-based Framework for Managing Updates in an Object-oriented Vpf Database
This paper presents an approach for supporting reactive capability in an objectoriented GIS database, through the use of an event interface comprising an event generator and rule objects. This interface supports specification of events spanning sets of geographic-feature objects, and detection of primitive and complex events. Rules can be specified to apply either at a class level (i.e., to all...
متن کاملValidation of Volunteered Geographic Information Landuse Change Using Satellite Imagery
Land use change monitoring is one of the main concerns of managers and urban planners due to human activities and unbalanced physical development in urban areas. In this paper, a combination of remote sensing data and volunteered geographic information was used to assess the quality of volunteered geographic information on land use and land cover changes monitoring. For this purpose, the ORBVIE...
متن کاملLand cover land use mapping and change detection analysis using geographic information system and remote sensing
Land cover/land use categories are relevant components in land management. Understanding how land cover/land use change over time is necessary to assess the consequences of humans and natural stressors on the earth’s environment and resources. The aim of the study was to map and monitor the spatial and temporal change in land cover/land use for the periods of 1977, 1991 and 2016 and to predict ...
متن کاملThe National Historical Geographic Information System (nhgis)
The National Historical Geographic Information System (NHGIS) is a five-year NSF-funded project designed to create a comprehensive U.S. census databaseat the census tract and county levelfor both the geographical and attribute data. Technological change presents an unprecedented opportunity to make these data readily available for social science research; thus bringing the complete census wit...
متن کاملPotential site selection in ecotourism planning using spatial decision support tool
Northern areas of Pakistan have blessed with extremely beautiful natural landscapes, waterfalls, glaciated mountains, biodiversity rich valleys and forests and have extraordinary potential for ecotourism. Study is designed to propose potential sites for ecotourism in Kohistan, which is a least developed but biodiversity rich area of Pakistan. Poor planning and mismanagement of tourism practice...
متن کامل