From data in the form of a two-way contingency table “Regions _ Sectors”, the concepts of specialization and concentration, built from the analysis of conditional distributions or profiles, is based on discrepancies among distributions: between profiles and a uniform distribution for...

We propose a conjugate and conditional conjugate Bayesian analysis of models of marginal independence with a bi-directed graph representation. We work with Markov equivalent directed acyclic graphs (DAGs) obtained using the same vertex set with the addition of some latent vertices when required....

Disertacijoje nagrinėjami kai kurie kategorinių požymių statistinės analizėsuždaviniai – ryšių struktūros bei modelio parinkimo ir jo parametrų įvertinimouždaviniai. Disertacijos tikslas – pasiūlyti ryšių struktūros tarp kategoriniųpožymių įvertinimo metodą tuo atveju,...

The dissertation considers some problems in the statistical analysis of categoricalvariables – the dependence structure between categorical variablesand the problems of selecting and assessing the models for this structure. Theaim of this dissertation is to propose the method to estimate...

There is analyzed the subjective assessment of quality of life in communities in LFA Prachatice as it perceived by the inhabitants of these villages. LFA areas are rate as less favoured areas. Most of the surveyed population is economically active and they assess their current life situation as...

In our work we analysed opinions of reasons and signs of economic weakness of villages. The respondents´ opinions of possibilities how to improve the economic weakness of villages and the importance of sources of funding in this article. LFA areas are evaluated as less favoured areas. When we...

I. J. Good (1916 – 2009) was a prolific scientist who contributed to many fields, mostly from a Bayesian standpoint. This column explains his idea of quasi- Bayes (a.k.a. pseudo-Bayes) estimation or smoothing of categorical frequencies in a contingency table, which is especially useful as a...

The concepts of faithfulness and strong-faithfulness are important for statistical learning of graphical models. Graphs are not sufficient for describing the association structure of a discrete distribution. Hypergraphs representing hierarchical log-linear models are considered instead, and the...

Common approaches to test for the economic value of directional forecasts are based on the classical Chi-square test for independence, Fisher’s exact test or the Pesaran and Timmerman (1992) test for market timing. These tests are asymptotically valid for serially independent observations....