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Ventura, Laura (2002) Use of approximate marginal likelihood for model selection. [Working Paper] WORKING PAPER SERIES, 18/2002 . , PADOVA (Inedito)

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Abstract (english)

Optimal invariant tests for model discrimination exist when the two models under hypotheses represent scale-regression families. These tests are based on the ratio of the marginal likelihoods of the two families, based on the maximal invariant statistics, in order to eliminate the unknown parameters from the likelihood function. However, even in cases where these functions can in principle be found, it may be difficult to make the calculations required, since the resulting formula is expressed in terms of a multidimensional integral. In this paper a simple approximation to optimal invariant tests based on the Laplace formula is discussed. The main regularity condition required is that the maximum likelihood estimates of the scale and regression parameters exist.

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EPrint type:Working Paper
Anno di Pubblicazione:December 2002
Settori scientifico-disciplinari MIUR:Area 13 - Scienze economiche e statistiche > SECS-S/01 Statistica
Struttura di riferimento:Dipartimenti > Dipartimento di Scienze Statistiche
Codice ID:7327
Depositato il:15 Dec 2014 12:44
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