Institute of Information Theory and Automation

Publication details

Model for Difference of Two Series of Poisson-like Count Data

Conference Paper (international conference)

Volf Petr


serial: Proceedings of 26th International Conference Mathematical Methods in Economics 2008 , Eds: Řehořová Pavla, Maršíková Kateřina

action: 26th International Conference Mathematical Methods in Economics 2008, (Liberec, CZ, 17.09.2008-19.09.2008)

research: CEZ:AV0Z10750506

project(s): GA402/07/1113, GA ČR

keywords: Poisson distribution, count data, Skellam distribution, MCMC

preview: Download

abstract (eng):

When the discrete count data are analyzed, we are often facing the problems with insufficient flexibility of Poisson distribution. However, in many instances the variable of the interest is the difference of two count variables. For these cases, so called Skellam distribution is available, derived originally as the difference of two correlated Poissons. The model contains latent variables, which leads quite naturally to the use of Bayes approach and to data augmentation via the Markov Chain Monte Carlo generation.

abstract (cze):

Při používání Poissonova rozdělení pravděpodobnosti často narážíme na problém jeho malé flexibility. Shrneme postupy, jak vhodně tuto distribuci modifikovat. Další možnost nabízejí situace, kdy analyzujeme rozdíl dvou Poissonovských veličin. Pro tento případ bylo odvozeno Skellamovo rozdělení. Ukážeme metodu statistické analýzy v tomto případě. Model zahrnuje latentní proměnné, proto je k analýze použito procedur MCMC (Markov Chain Monte Carlo).

RIV: BB

Responsible for information: admin
Last modification: 21.12.2012
Institute of Information Theory and Automation