正交试验设计在交通意向调查中的应用

为了在保证意向调查精度的基础上精简方案数量,采用正交的方法进行方案设计。文中简要介绍了正交设计的原理,利用因素间的正交特点进行多因素多水平的方案组合,并比较了应用正交设计前后的效果。该方法降低了组合次数,也有利于提高后期数据处理的工作效率。在调查实例中,运用正交设计的停车行为意向调查问卷取得了较好的效果。

Application of Orthogonal Design on Stated Preference Survey

This paper applied orthogonal design to SP survey in order to simplify questionnaire to ensure survey quality.Based on the characteristics of SP survey.Considering SP survey contained a series of hypothetical conditions described by varying levels of attributes,decreasing scenario numbers is a key work for questionnaire design.A series of scenarios according to its orthogonal characteristics were discussed and developed comparing the effects of the orthogonal design application before and after the design,which showed that the method decreases the combinations,and improves efficiency.The method was implemented in an actual survey about city parking behavior and proved effective.