Revistes Publicacions URV: SORT - Statistics and Operations Research Transactions> 2020

Finding archetypal patterns for binary questionnaires

  • Dades identificatives

    Identificador: RP:4683
    Handle: https://hdl.handle.net/20.500.11797/RP4683
    Autors:
    Epifanio, IreneCabero, Ismael
    Resum:
    Archetypal analysis is an exploratory tool that explains a set of observations as mixtures of pure (extreme) patterns. If the patterns are actual observations of the sample, we refer to them as archetypoids. For the first time, we propose to use archetypoid analysis for binary observations. This tool can contribute to the understanding of a binary data set, as in the multivariate case. We illustrate the advantages of the proposed methodology in a simulation study and two applications, one exploring objects (rows) and the other exploring items (columns). One is related to determining student skill set profiles and the other to describing item response functions.

  • Altres:

    Autor segons l'article: Epifanio, Irene Cabero, Ismael
    Paraules clau: dichotomous item test
    Resum: Archetypal analysis is an exploratory tool that explains a set of observations as mixtures of pure (extreme) patterns. If the patterns are actual observations of the sample, we refer to them as archetypoids. For the first time, we propose to use archetypoid analysis for binary observations. This tool can contribute to the understanding of a binary data set, as in the multivariate case. We illustrate the advantages of the proposed methodology in a simulation study and two applications, one exploring objects (rows) and the other exploring items (columns). One is related to determining student skill set profiles and the other to describing item response functions.
    Any de publicació de la revista: 2020
    Tipus de publicació: ##rt.metadata.pkp.peerReviewed## info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article