关键词: 群体决策, 数据仓库, 主动数据更新

Abstract: To construct a data warehouse supporting group decisions,a model of multi-data warehouse supporting group decisions was proposed based on limitation analysis of the traditional data refresh algorithm and data warehouse model. Intermediate processing layer was added between data source of tradition data warehouse model and data warehouse in order to support flexible update and management of multi-data warehouse. Based on this model,an active data refresh algorithm to support multi-data warehouse was given. The model and the algorithm were then evaluated and validated through implementations and analysis. Experiments indicated that this method could refresh the group decisions information more effectively in multi-data warehouse.

Key words: group decision, data warehouse, active data refresh