Construction of urban land demand model base system based on web services

This paper explores a series of methods and models of urban land demand forecast, and these methods and models were dived into the urban land quantitative forecast and urban land pattern forecast two types. In this instance, we designed a model base system framework, including the following steps: data processing, forecasting, forecast type select, forecast way select, model checking and multi-schema evaluation, results output. On the basis of the basic flow, object-oriented analysis technique was adopted for the developments of prediction models and prediction flow, and then a model base system with discreteness characteristic were produced, which was extendable and reusable. Finally, based on Web Service technique, we designed urban land demand model base system framework, which provides an integration scheme for the GIS service and application services.