Autori: Cazzaro, Manuela , Nicolussi, Federica
Titolo: Context-specific independencies in hierarchical multinomial marginal models
Periodico: Statistical methods & applications : Journal of the Italian Statistical Society
Anno: 2020 - Volume: 29 - Fascicolo: 4 - Pagina iniziale: 767 - Pagina finale: 786

This paper focuses on studying the relationships among a set of categorical (ordinal) variables collected in a contingency table. Besides the marginal and conditional (in)dependencies, thoroughly analyzed in the literature, we consider the context-specific independencies holding only in a subspace of the outcome space of the conditioning variables. To this purpose we consider the hierarchical multinomial marginal models and we provide several original results about the representation of context-specific independencies through these models. The theoretical results are supported by an application concerning the innovation degree of Italian enterprises.


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SICI: 1618-2510(2020)29:4<767:CIIHMM>2.0.ZU;2-P

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