Search Results for author: Fabrizio Leisen

Found 6 papers, 1 papers with code

A Pólya-Gamma Sampler for a Generalized Logistic Regression

1 code implementation6 Sep 2019 Luciana Dalla Valle, Fabrizio Leisen, Luca Rossini, Weixuan Zhu

In this paper we introduce a novel Bayesian data augmentation approach for estimating the parameters of the generalised logistic regression model.

Methodology Computation Other Statistics

Bayes Calculations from Quantile Implied Likelihood

no code implementations2 Feb 2018 George Karabatsos, Fabrizio Leisen

In statistical practice, a realistic Bayesian model for a given data set can be defined by a likelihood function that is analytically or computationally intractable, due to large data sample size, high parameter dimensionality, or complex likelihood functional form.

Methodology

Modelling Preference Data with the Wallenius Distribution

no code implementations27 Jan 2017 Clara Grazian, Fabrizio Leisen, Brunero Liseo

The Wallenius distribution is a generalisation of the Hypergeometric distribution where weights are assigned to balls of different colours.

General Classification

Modelling and computation using NCoRM mixtures for density regression

no code implementations2 Aug 2016 Jim Griffin, Fabrizio Leisen

Normalized compound random measures are flexible nonparametric priors for related distributions.

regression

Generalized Species Sampling Priors with Latent Beta reinforcements

no code implementations4 Dec 2010 Edoardo M. Airoldi, Thiago Costa, Federico Bassetti, Fabrizio Leisen, Michele Guindani

We evaluate the performance of the prior and the robustness of the resulting inference in a simulation study, providing a comparison with popular Dirichlet Processes mixtures and Hidden Markov Models.

Clustering

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