Journal Article: Investigating the single ideal assumption using Ideal Profile Method (2013)

Abstract: Ideal point modeling is a type of multivariate mapping in which consumers are assumed to use internal ideals in their hedonic evaluation of products. In their calculation processes, these techniques typically assume that consumers have a unique ideal for the product set tested. But this assumption is difficult to verify from the liking...

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Journal Article: Analysis and Thurstonian scaling of applicability scores (2013)

Abstract: Check-all-that-apply (CATA) lists are commonly used in both survey research and sensory science. A related technique, referred to in this paper as applicability scoring, requires respondents to respond positively or negatively to the item of interest – applicability scoring differs from CATA as CATA only requires a check when the item applies to...

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Journal Article: A Thurstonian ranking model with rank-induced dependencies (2013)

Abstract: A Thurstonian model for ranks is introduced in which rank-induced dependencies are specified through correlation coefficients among ranked objects that are determined by a vector of rank-induced parameters. The ranking model can be expressed in terms of univariate normal distribution functions, thus simplifying a previously computationally intensive problem. A theorem is proven that...

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Journal Article: A comparison of adaptive choice-based conjoint and choice-based conjoint to determine key choice attributes of sour cream with limited sample size (2012)

Abstract: Adaptive choice-based conjoint (ACBC) analysis is a technique that uses choice data and incorporates it into an adaptive interviewing experience. ACBC analysis has been suggested to provide more accurate information at the individual level, which can lead to better predictions even when using smaller sample sizes. A comparison of a traditional choice-based conjoint...

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Journal Article: A large-scale experimental comparison of the tetrad and triangle tests in children (2012)

Abstract: Interest in the Tetrad test as an alternative to the Triangle test is growing as theoretical results indicate that the Tetrad test has relatively high power for an unspecified method. But a large-scale experimental comparison of the Tetrad test with the Triangle test for the same stimuli has not yet appeared in the...

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Journal Article: Guiding the switch from triangle testing to tetrad testing (2012)

Abstract: Tetrad testing is theoretically more powerful than Triangle testing, yet the addition of a fourth stimulus raises questions – it is possible that the addition of a fourth stimulus places such an additional demand on subjects that the theoretical advantage of the Tetrad test is lost. In this paper, we provide a guideline...

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Journal Article: Assignment-minimal clique coverings (2012)

Abstract: The search for minimum clique coverings of graphs appears in many practical guises and with several possible minimization goals. One reasonable goal is to minimize the number of overall cliques in a covering, while a second less well-studied but equally reasonable goal is to minimize the number of individual assignments of vertices to...

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Journal Article: A comparison of three commonly used methods for treating no preference votes (2012)

Abstract: The treatment of no preference votes continues to be an issue in sensory science, especially as the proper treatment of these votes has recently gained importance in advertising claims support. There are currently three main methods in common use: dropping the no preference votes, splitting the votes equally and splitting the votes proportionally...

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Journal Article: Justifying count-based comparisons (2012)

Abstract: Count-based comparisons such as “7 out of 10” or “2 to 1” are often used to quantify superior product performance. Because of experimental variability, statistics are needed to ensure confidence in such comparisons. Even so, count-based comparisons commonly appear without any statistical treatment of the data. In this article, we discuss statistics to...

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Journal Article: A group level validation of the supercombinatorality property: Finding high-quality ingredient combinations using pairwise information (2012)

Abstract: This study tested the principle of supercombinatorality, i.e. that food combinations (of more than two items) that are fully compatible on a pairwise basis are more compatible than combinations that are not fully compatible pairwise. Previous work has shown this to hold for salad ingredient combinations predicted for individuals, but this has not...

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