Optimal designs for stated choice experiments that incorporate ties

Elsevier Inc
Publication Type:
Journal Article
Journal of Statistical Planning and Inference, 2010, 140 (7), pp. 1712 - 1718
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In 1970 Davidson generalised the Bradley-Terry model to allow respondents to say that the two options presented in a choice task were equally attractive. In this paper we extend this idea to the MNL model with m options in each choice set and we show that the optimal designs for the MNL model are also optimal in this setting.
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