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Algorithms for Measuring Indirect Control in Corporate Networks and Effects of Divestment

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Transactions on Computational Collective Intelligence XXXVII

Abstract

This paper discusses algorithms for measuring indirect control in complex corporate shareholding networks and investigates the importance of mutual connections in the network in the sense of shareholdings of one firm in another. Our algorithms rely on the concept of power indices from cooperative game theory. We focus on a variant of the implicit power index by Stach and Mercik based on the absolute Banzhaf index. We extend this algorithm by determining the number of regressions in an adaptive network-dependent manner taking into account the maximal length of a path to each controlled company in the network and by a model for the float, i.e., the set of unidentified small shareholders. We compare our method with existing algorithms and discuss the importance of linkages by investigating divestment of shares for a theoretical network with 21 players.

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Acknowledgements

The first author thanks the funding of the Bavarian State Ministry of Science and Arts. The third author’s contribution to the article was funded under subvention funds for the AGH University of Science and Technology in Krakow, Poland. The authors thank two anonymous reviewers for their careful reading of the manuscript and their helpful comments and suggestions.

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Correspondence to Jochen Staudacher .

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Staudacher, J., Olsson, L., Stach, I. (2022). Algorithms for Measuring Indirect Control in Corporate Networks and Effects of Divestment. In: Nguyen, N.T., Kowalczyk, R., Mercik, J., Motylska-Kuźma, A. (eds) Transactions on Computational Collective Intelligence XXXVII. Lecture Notes in Computer Science(), vol 13750. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-66597-8_3

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