Abstract
The aim of this paper is to show some perspectives of behavioral modeling in infrastructure planning from the viewpoint of the observer. We pick up the following three topics. Firstly, we interpret model building and identification as an inverse problem and clarify the methodology of representative behavior modeling. Secondly, value of information in welfare terms is defined and we investigate the fundamental principles of survey design. Thirdly, the logical and ethical problems, which may happen in evaluating the policies based on revealed preference of agencies, are introduced.
