工程预算决策中数据仓库的数学描述及构建

The Mathematics Description and Establishment of the Data Warehouse in Engineering Budget Decision-Making

针对目前的工程预算决策系统精确性不高的问题,本文提出一种基于数据仓库的工程预算决策模型,首先将数据仓库进行数学描述,然后对数据仓库中的关联规则进行权值优化,包括垂直权值优化和水平权值优化,接着以工程预算中的预测模型为例引入衰减因子构建算法模型,最后对其算法性能实验。仿真试验结果表明,基于数据仓库的工程预算决策模型具有良好的精确性和可扩展性,值得推广使用。

In view that the accuracy of the current engineering budget decision-making system is not high, this thesis proposes a engineering budget decision-making model based on data warehouse, and first of all, execute mathematical description to the data warehouse, and then execute weight optimization to the associated rules in data warehouse, which includes vertical weight optimization and level weight optimization, and then introduce attenuation factor establishment algorithm model taking the forecast model of the engineering budget as example, and at last, experiment on the performance of the algorithm. Simulation results show that the engineering budget decision-making model based on data warehouse has a good accuracy and scalability, which is worthy to wildly use.