01.06.2016 | Regular Article
Varying uncertainty in CUB
models
Erschienen in: Advances in Data Analysis and Classification | Ausgabe 2/2016
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Abstract
CUB
model, the response probabilities are defined as a convex combination of shifted Binomial and discrete Uniform random variables. Our proposal introduces uncertainty distributions with different shapes, which could capture response style and indecision of respondents with greater effectiveness. Since we consider several alternative specifications that are nonnested, we suggest the implementation of a Vuong test for choosing among them. In this regard, some simulation experiments and real case studies confirm the usefulness of the approach.