计算机应用研究2013，Vol.30Issue(4)：1099-1101,1104,4.DOI:10.3969/j.issn.1001-3695.2013.04.037
基于概率支持向量回归的产品设计时间预测模型
Forecast model for product design time based on probabilistic support vector regression
摘要
Abstract
This paper proposed a forecast model based on probabilistic support vector regression ( PSVR) to overcome the problems of small samples and heteroscedastic noise in design time forecast, and provided useful information in addition to the forecast value. Firstly, it designed probability-constraints on the basis of heteroscedastic regression model, and made sure that for every sample the forecast value was in a neighborhood of the target value with high probability. It formulated the optimization objective in the form of support vector regression with parameter-insensitive loss function, and proposed PSVR. Then, it embedded prior knowledge of maximum completion time into the constraints of PSVR, and provided the size of the neighborhood of the target value. It applied the combination of genetic algorithm and cross validation to determine the relevant parameters of PSVR. Finally, it analyzed the application in injection mold designs. The results verify that the time forecast method based on PSVR can simultaneously provide effective forecast values and forecast intervals.关键词
概率支持向量回归/产品设计/设计时间/异方差回归/先验知识Key words
probabilistic support vector regression/ product design/ design time/ heteroscedastic regression/ prior knowledge分类
信息技术与安全科学引用本文复制引用
商志根,严洪森..基于概率支持向量回归的产品设计时间预测模型[J].计算机应用研究,2013,30(4):1099-1101,1104,4.基金项目
国家自然科学基金资助项目(50875046,60934008) （50875046,60934008）
