Download e-book for kindle: A Comparison of Probabilistic Unfolding Theories for Paired by Patrick Bossuyt

By Patrick Bossuyt

ISBN-10: 3540524916

ISBN-13: 9783540524915

ISBN-10: 3642841724

ISBN-13: 9783642841729

Some data-analytic equipment excel by means of their sheer splendor. Their easy ideas appear to have a specific allure, in accordance with a complicated blend of simplicity, deliberation, and tool. and they stability at the verge of 2 disciplines, data-analysis and foundational size, or information and psychology. To me, unfolding has consistently been one in all them. the idea and the unique method have been created by means of Clyde Coombs (1912-1988) to explain and study preferential selection facts. the elemental assumptions are really psy­ chological; Unfolding relies at the concept of a unmarried peaked choice functionality over a mental similarity house, or, in another yet similar expression, at the assumption of implicit comparisons with an incredible replacement. Unfolding has proved to be a really positive data-analytic precept, and a resource of thought for lots of theories on selection habit. but the variety of functions has now not lived as much as the acclaim the speculation has bought between mathematical psychologists. one of many purposes is that it calls for way more consistency in human selection habit than will be anticipated. numerous authors have attempted to reduce those requisites by way of turning the deterministic unfolding idea right into a probabilistic one. given that Coombs first placed forth a probabilistic model of his thought, a couple of competing proposals were offered within the literature during the last thirty years. This monograph encompasses a precis and a comparability of unfolding theories for paired comparisons info, and an evaluate approach designed to evaluate the validity of those theories in empirical selection tasks.

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2. 1 Levels of stochastic transitivity necessarily fulfilled in probabilistic unfolding models MODELS STOCHASTIC TRANSITIVITY STA WST MST SST STST + + RANDOM CONFIGURATION MODELS Random coordinate models Case I (double sampling) + + + Case /I (single sampling) + + + Case 11/ (single sampling - ideal only) + + + Case IV (alternatives only) + + + + + + + + + + Strong unfolding models + + + + (a) Midpoint unfolding models + + + Random distance models RANDOM RESPONSE MODELS Note- (a) Depends on the cumulative distribution function These five fonns of stochastic transitivity are hierarchical; STA being the lowest and STST the highest fonn.

9. 3 Evaluating probabilistic unfolding theories In this section we will deal with the problem of how probabilistic unfolding theories can be evaluated. The approach that will be advocated has been hinted at in Chapter 2, in which properties of probabilistic choice behavior were explored. An examination of the properties of probabilistic choice behavior that are necessarily implied by a probabilistic choice theory resulted in a second classification of existing probabilistic unfolding theories.

The random distance theories imply strict stochastic transitivity. The BCP structures in a strong unfolding model necessarily satisfy strong stochastic transitivity, and strict stochastic transitivity if the cumulative distribution function in the model is strictly increasing. On the other hand, midpoint unfolding models necessarily satisfy moderate stochastic transitivity only. As can be concluded from this overview, the required level of stochastic transitivity is rather high for all theories.

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A Comparison of Probabilistic Unfolding Theories for Paired Comparisons Data by Patrick Bossuyt


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