Abstract
With the rapid progress of economy, the land prices change quickly, thus demanding frequent update that is hard to accomplish in time. This paper addresses these problems by employing geographic information system (GIS) and spatial data mining (SDM) to dynamically grade and evaluate the prices of land parcels. In the paper, the author briefly introduced the integrated techniques between GIS and SDM, and an application information system for land grading is proposed. The idea is to combine SDM with GIS and expert system and apply them to establish an intelligent land grading information system. Then a prototype system for land grading based on GIS and SDM use Visual C++ 6.0 and MapObject2.0 is designed and developed, the base algorithm of the SDM is used Decision Tree. Also, an application example (commercial land grading in Bao'an district) is presented to show the system is a transplantable and practical and extensible system.
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