GI Digital Library :: Auflistung nach Autor:in "Petrovsky, Alexey B."

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Konferenzbeitrag
Cluster analysis in multiset spaces
(2003) Petrovsky, Alexey B.
The paper considers techniques for grouping objects that are described with many quantitative and qualitative attributes and may exist in several copies. Such multi-attribute objects may be represented as multisets or sets with repeating elements. Multiset characteristics and operations under an arbitrary number of multisets are determined. The various options for the objects' aggregation (addition, union, intersection) and the main features of hierarchical and non hierarchical cluster analysis in multiset metric spaces are discussed.
Konferenzbeitrag
Multiple criteria project selection based on contradictory sorting rules
(Information Systems Technology and its Applications, international conference ISTA'2001, 2001) Petrovsky, Alexey B.
This paper considers the techniques for selecting a collection of projects which are estimated by several experts with many qualitative criteria and sorted beforehand into some classes by diverse individual sorting rules. These tools are based on the theory of multiset metric spaces and allow to generate classes of such objects and define a general classification rule which approximates the set of contradictory sorting rules.