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Минимизация модулярных и супермодулярных функций на L-матроидах

Минимизация модулярных и супермодулярных функций на L-матроидах

Abstract

A matroid can be viewed as an ideal of special kind in the boolean lattice. An analog of the notion of matroid for the case of finite geometric lattices is proposed and the following question is studied: whether a generalization of the Rado-Edmonds theorem can be proved? A bound on worst-case behaviour of the greedy algorithm for the problem of minimizing a supermodular function on a matroidal structure in the geomitric lattice is obtained.

Матроид можно рассматривать как идеал специального вида в булевой решётке. Предлагается аналог понятия матроида для конечных геометрических решётоки исследуется возможность обобщения теоремы Радо-Эдмондса. Получена гарантированная оценка точности жадного алгоритма для задачи минимизации супермодулярной функции на матроидной структуре в геометрической решётке

Keywords

МОДУЛЯРНАЯ ФУНКЦИЯ, СУПЕРМОДУЛЯРНАЯ ФУНКЦИЯ, ГЕОМЕТРИЧЕСКАЯ РЕШёТКА, L-МАТРОИД, ЖАДНЫЙ АЛГОРИТМ, ГАРАНТИРОВАННАЯ ОЦЕНКА ТОЧНОСТИ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold