Seminars in Statistics
Seminars in Statistics
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Seminars in Statistics Brunero Liseo (Università di Roma La Sapienza)
Seminars in Statistics Brunero Liseo (Università di Roma La Sapienza)
Modelling Preference Data with the Wallenius Distribution The Wallenius distribution is a generalisation of the Hypergeometric distribution where weights are assigned to balls of different colours. This naturally defines a model for ranking categories which can be used for classification purposes. Since, in general, the resulting likelihood is not analytically available, we adopt an approximate…
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Seminars in Statistics Theodore Kypraios (University of Nottingham)
Seminars in Statistics Theodore Kypraios (University of Nottingham)
Latent Branching Trees: Modelling and Bayesian Computation. In this talk a novel class of semi-parametric time series models will bepresented, for which we can specify in advance the marginal distributionof the observations and then build the dependence structure of theobservations around them by introducing an underlying stochastic processtermed as 'latent branching tree'. It will be…
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Seminars in Statistics Kolyan Ray (King’s College London)
Seminars in Statistics Kolyan Ray (King’s College London)
Estimating the mean response in a missing data model We study semiparametric Bayesian estimation of the mean response in a binary regression model with missing observations. We allow some dependence between the missingness and response mechanisms, which we assume are conditionally independent given some measured covariates (i.e. unconfoundedness). This model has applications in biostatistics and…