Wszystkie pola: Niemiro, W. - Katalog OPAC zbiorów

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Tytuł:: Decision-theoretic foundations of discriminant analysis
Autorzy:: Bromek, T.
Niemiro, W.
Powiązania:: https://bibliotekanauki.pl/articles/747451.pdf
Data publikacji:: 1992
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: Classification and discrimination, cluster analysis
Bayesian problems
Admissibility
Opis:: .
This is a survey paper, starting from elementary facts on discrimination (possibly with a deferred decision). Further, four different orderings of discriminant rules are considered, and admissible rules (with respect to these orderings) are characterized by theorems and formulas. Finally, the decision regions of Bayes rules are described geometrically by regions in simplexes.
Źródło:: Mathematica Applicanda; 1992, 21, 35
1730-2668
2299-4009
Pojawia się w:: Mathematica Applicanda
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A new method for identifying outlying subsets of data
Autorzy:: Zalewska, M.
Grzanka, A.
Niemiro, W.
Samoliński, B.
Powiązania:: https://bibliotekanauki.pl/articles/970610.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: misclassification error
discriminant analysis
multidimensional homogeneity test
medical data
Opis:: In various branches of science, e.g. medicine, economics, sociology, it is necessary to identify or detect outlying subsets of data. Suppose that the set of data is partitioned into many relatively small subsets and we have some reason to suspect that one or several of these subsets may be atypical or aberrant. We propose applying a new measure of separability, based on the ideas borrowed from the discriminant analysis. In our paper we define two versions of this measure, both using a jacknife, leave-one-out, estimator of classification error. If a suspected subset is significantly well separated from the main bulk of data, then we regard it as outlying. The usefulness of our algorithm is illustrated on a set of medical data collected in a large survey "Epidemiology of Allergic Diseases in Poland" (ECAP). We also tested our method on artificial data sets and on the classical IRIS data set. For a comparison, we report the results of a homogeneity test of Bartoszyński, Pearl and Lawrence, applied to the same data sets.
Źródło:: Control and Cybernetics; 2008, 37, 3; 693-709
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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