Coalition structure generation (CSG) for multi-agent systems is a well-studied problem. A vast majority of the previous work and the state-of-the-art approaches to CSG assume a characteristic function form of the coalition values, where a coalition’s value is independent of the other coalitions in the coalition structure. Recently, there has been interest in the more realistic partition functio...

Equilibrium existence results are presented for competitive markets with externalities in price and consumption and a measure space of agents. These unify and extend [Balder, E.J., 2003. Existence of competitive equilibria in economies with a measure space of consumers and consumption externalities. Preprint, in press, electronically available at http://www.math.uu.nl/publications/ preprints/12...

The Shapley value is one of the most important solution concepts in cooperative game theory. In coalitional games without externalities, it allows to compute a unique payoff division that meets certain desirable fairness axioms. However, in many realistic applications where externalities are present, Shapley’s axioms fail to indicate such a unique division. Consequently, there are many extensio...

Readers may make verbatim copies of this document for non-commercial purposes by any means, provided that this copyright notice appears on all such copies. Abstract: Spatial externalities can affect economic welfare and landscape pattern by linking farm returns on adjoining parcels of land. While policy can be informed by research that documents spatial externalities, statistically quantifying ...

A recent theoretical model devoted to the positive externalities of industrial clustering in the presence of irreversibility and uncertainty is adapted to include negative externalities that may arise from environmental or other causes. Such externalities may alter the decision criteria to invest by shifting some or all of: 1) the measurement of price, 2) the measurement of productivity, or 3) ...

We study how network externalities affect research and development (Rinvestments by a non−cooperative duopoly that offers compatible products. We find that multiple RDequilibria may arise when network externalities are non linear in the number of consumers. The lowest RDequilibrium corresponds to the case where network externalities are absent. However, even in the presence of network externali...

This paper develops a spatial general equilibrium model that accommodates both congestion and agglomeration externalities, while firms’ and households’ land-use decisions are endogenous across continuous space. Focusing on the interaction between externalities and land use patterns, we examine the efficiencies of first-best policies and second-best pricing and placebased strategies using simula...

This paper surveys the literature on group selection. I describe the early contributions and the group selection controversy. I also describe the main approaches to group selection in the recent literature; …xation, assortative group formation, and reproductive externalities. Keywords: Altruism; spite; externalities; conformity; …xation; signalling JEL Classi…cation: C70; D03; D62; D64

A recent literature, dealing with special markets characterized by bilateral network externalities, is summarized and critically assessed. Specific features of these markets, in terms of pricing principles and externalities, are discussed first. Afterwards, several issues related to competition between platforms are considered. Finally, implications for competition policy and prospects for futu...

Innovation and technological change are central to the quest for regional development. In the globally-connected knowledge-driven economy, the relevance of agglomeration forces that rely on proximity continues to increase, paradoxically despite declining real costs of information, communication and transportation. Globally, the proportion of the population living in cities continues to grow and...