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Wyświetlanie 1-2 z 2
Tytuł:
Measurement of control power in corporate networks
Autorzy:
Stach, Izabella
Mercik, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/2099514.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
corporate networks
indirect control
simple games
power indices
Opis:
This paper discusses some game-theoretical methods for measuring indirect control in complex corporate shareholding networks. The methods use power indices to estimate the direct and indirect control in shareholding structures. Some of these methods only estimate the control power of investors (firms without shareholdings), and only a few measure the control power of all firms involved in shareholding networks (which means investors and stock companies). None of them takes measuring the importance of mutual connections (edges in the networks) into consideration; thus we focus in particular on an extension of these methods in this paper to measure both the control-power of the firms involved in complex shareholding structures (represented by nodes in networks) and the importance (power) of linkages between the firms as elements of a whole corporate shareholding network. More precisely, we apply our approaches to a theoretical example of a corporate network. Moreover, we continue the considerations about reasonable properties for indirect control measurement. Some ideas of new properties are proposed. The paper also provides a brief review of the literature concerning the topic.
Źródło:
Operations Research and Decisions; 2021, 31, 1; 98--121
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computing power indices for weighted voting games via dynamic programming
Autorzy:
Staudacher, Jochen
Kóczy, László Á.
Stach, Izabella
Filipp, Jan
Kramer, Marcus
Noffke, Till
Olsson, Linuss
Pichler, Jonas
Singer, Tobias
Powiązania:
https://bibliotekanauki.pl/articles/2099634.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
cooperative game theory
power indices
weighted voting games
dynamic programming
minimal winning coalitions
Opis:
We study the efficient computation of power indices for weighted voting games using the paradigm of dynamic programming. We survey the state-of-the-art algorithms for computing the Banzhaf and Shapley–Shubik indices and point out how these approaches carry over to related power indices. Within a unified framework, we present new efficient algorithms for the Public Good index and a recently proposed power index based on minimal winning coalitions of the smallest size, as well as a very first method for computing the Johnston indices for weighted voting games efficiently. We introduce a software package providing fast C++ implementations of all the power indices mentioned in this article, discuss computing times, as well as storage requirements.
Źródło:
Operations Research and Decisions; 2021, 31, 2; 123--145
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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