A degree-distance-based connections model with negative and positive externalities

Philipp Möhlmeier (philip.moehlmeier@uni-bielefeld.de), Agnieszka Rusinowska and Emily Tanimura (emily.tanimura@gmail.com)
Additional contact information
Philipp Möhlmeier: Universität Bielefeld = Bielefeld University
Emily Tanimura: CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique

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Abstract: We develop a modification of the connections model by Jackson and Wolinsky (1996) that takes into account negative externalities arising from the connectivity of direct and indirect neighbors, thus combining aspects of the connections model and the co-author model. We consider a general functional form for agents' utility that incorporates both the effects of distance and of neighbors' degree. Consequently, we introduce a framework that can be seen as a degree-distance-based connections model with both negative and positive externalities. Our analysis shows how the introduction of negative externalities modifies certain results about stability and efficiency compared to the original connections model. In particular, we see the emergence of new stable structures, such as a star with links between peripheral nodes. We also identify structures, for example, certain disconnected networks, that are efficient in our model but which could not be efficient in the original connections model. While our results are proved for the general utility function, some of them are illustrated by using a specific functional form of the degree-distance-based utility.

Keywords: Connections model; degree; distance; negative externalities; positive externalities; pairwise stability; efficiency; Modèle des connexions; degré; externalités négatives; externalités positives; stabilité; efficacité (search for similar items in EconPapers)
Date: 2013-04
New Economics Papers: this item is included in nep-net, nep-upt and nep-ure
Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-00825266v1
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Citations: View citations in EconPapers (1)

Published in 2013

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Related works:
Journal Article: A Degree-Distance-Based Connections Model with Negative and Positive Externalities (2016)
Working Paper: A degree-distance-based connections model with negative and positive externalities (2016)
Working Paper: A degree-distance-based connections model with negative and positive externalities (2016)
Working Paper: A degree-distance-based connections model with negative and positive externalities (2016)
Working Paper: A degree-distance-based connections model with negative and positive externalities (2014)
Working Paper: A degree-distance-based connections model with negative and positive externalities (2013)
Working Paper: A degree-distance-based connections model with negative and positive externalities (2013)
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