2009, Vol. 33, Núm. 2
Summary
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Testing for the existence of clusters
(Institut d'Estadística de Catalunya, 2009)
Article
Open AccessDetecting and determining clusters present in a certain sample has been an important concern, among researchers from different fields, for a long time. In particular, assessing whether the clusters are statistically ... -
Nonparametric estimation of the expected accumulated reward for semi-Markov chains
(Institut d'Estadística de Catalunya, 2009)
Article
Open AccessIn this paper a nonparametric estimator of the expected value of a discounted semi-Markov reward chain is proposed. Its asymptotic properties are established and as a consequence of the asymptotic normality the confidence ... -
Estimation in the Birnbaum-Saunders distribution based on scale-mixture of normals and the EM-algorithm
(Institut d'Estadística de Catalunya, 2009)
Article
Open AccessScale mixtures of normal (SMN) distributions are used for modeling symmetric data. Members of this family have appealing properties such as robust estimates, easy number generation, and efficient computation of the ML ... -
Eliciting expert opinion for cost-effectiveness analysis: a flexible family of prior distributions
(Institut d'Estadística de Catalunya, 2009)
Article
Open AccessThe Bayesian approach to statistics has been growing rapidly in popularity as an alternative to the classical approach in the economic evaluation of health technologies, due to the significant benefits it affords. One of ... -
How much Fisher information is contained in record values and their concomitants in the presence of inter-record times?
(Institut d'Estadística de Catalunya, 2009)
Article
Open AccessIt is shown that, although the distribution of inter-record time does not depend on the parent distribution, Fisher information increases when inter-record times are included. The general results concern different classes ... -
Some improved two-stage shrinkage testimators for the mean of normal distribution
(Institut d'Estadística de Catalunya, 2009)
Article
Open AccessIn this paper, we introduced some two-stage shrinkage testimators (TSST) for the mean μ when a prior estimate μ0 of the mean μ is available from the past, by considering a feasible form of the shrinkage weight function ...
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