Search Results - subject:"Sampling formula"

Posterior analysis of rare variants in Gibbs-type species sampling models

Cesari, Oriana; Favaro, Stefano; Nipoti, Bernardo - In: Journal of Multivariate Analysis 131 (2014) C, pp. 79-98

Species sampling problems have a long history in ecological and biological studies and a number of statistical issues, including the evaluation of species richness, are still to be addressed. In this paper, motivated by Bayesian nonparametric inference for species sampling problems, we consider...

Persistent link: https://www.econbiz.de/10010930745

On the Jeffreys prior for the multivariate Ewens distribution

Rodríguez, Abel - In: Statistics & Probability Letters 83 (2013) 6, pp. 1539-1546

We derive the Jeffreys prior for the parameter of the Multivariate Ewens Distribution and study some of its properties. In particular, we show that this prior is proper and has no finite moments. We also investigate the impact of this prior on the a priori distribution of the number of species...

Persistent link: https://www.econbiz.de/10011040023

Mixtures and limits of symmetric random integer partitions

Gasparini, Mauro - In: METRON 70 (2012) 2, pp. 207-217

alleles of a gene, but are also common in other applied sciences. Ewens sampling formula is the first and most famous devoted … probability distribution, obtained by a geneticist, in this area of research. From a statistical point of view, Ewens sampling … formula is an example of distribution of a random integer partition, i.e. a random list of multiplicities m <Subscript>1 …

Persistent link: https://www.econbiz.de/10011000624

Unordered and ordered sample from dirichlet distribution

Huillet, Thierry - In: Annals of the Institute of Statistical Mathematics 57 (2005) 3, pp. 597-616

Persistent link: https://www.econbiz.de/10005760174

Herding and clustering: Ewens vs. Simon–Yule models

Costantini, D.; Donadio, S.; Garibaldi, U.; Viarengo, P. - In: Physica A: Statistical Mechanics and its Applications 355 (2005) 1, pp. 224-231

Clustering has often described by Ewens Sampling Formula (ESF). Focusing the attention on the evergreen problem of the …

Persistent link: https://www.econbiz.de/10010589151

A FINITARY CHARACTERIZATION OF THE EWENS SAMPLING FORMULA

GARIBALDI, U.; COSTANTINI, D.; VIARENGO, P. - In: Advances in Complex Systems (ACS) 07 (2004) 02, pp. 265-284

to many economic interpretations, often described by the Ewens Sampling Formula (ESF). In contrast with the usual complex …

Persistent link: https://www.econbiz.de/10004977687