Title
An integrated algorithm for the optimal design of stated choice experiments with partial profiles An integrated algorithm for the optimal design of stated choice experiments with partial profiles
Author
Faculty/Department
Faculty of Applied Economics
Publication type
article
Publication
Oxford ,
Subject
Economics
Source (journal)
Transportation research: part B: methodological. - Oxford
Volume/pages
93(2016) , p. 648-669
ISSN
0191-2615
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Stated choice experiments are conducted to identify the attributes that drive peoples preferences when choosing between competing options. They are widely used in transportation in order to support the decision making of companies and governmental authorities. A large number of attributes might increase the complexity of the choice task in a choice experiment, and have a detrimental effect on the quality of the results obtained. In order to reduce the cognitive effort required by the experiment, researchers may resort to experimental designs where the levels of some attributes are held constant within a choice situation. These designs are called partial profile designs. In this paper, we propose an integrated algorithm for the generation of D-optimal designs for stated choice experiments with partial profiles. This algorithm optimizes the set of constant attributes and the levels of the varying attributes simultaneously. An extensive computational experiment shows that the designs produced by the integrated algorithm outperform those obtained by existing algorithms, and match the optimal designs that have been analytically derived for a number of benchmark instances. Additionally, we evaluate the performance of the algorithm under varying experimental conditions and study the structure of the designs generated. We also revisit two stated choice experiments in transportation, and describe how the integrated algorithm could help to improve their designs.
E-info
https://repository.uantwerpen.be/docman/iruaauth/39574e/135306.pdf
Handle