We analyze surplus allocation problems where cooperation between agents is restricted both by a communication graph and by a sequence of embedded partitions of the agent set. For this type of problem, we define and characterize two new values extending the Shapley value and the Banzhaf value...

We consider the problem of defining all possible Bayesian truth serums for agents represented by a singly connected network (a tree graph). Agents receive signals according to a probability distribution that is common knowledge and that matches the network structure. The planner knows the...

In this paper we explore the topology of the Spanish bank-firm credit network over the years 1999-2007. In particular we analyze the bipartite clustering between banks and firms with several different statistics. While we find only moderate evidence of structural changes in the network over the...

In this paper we represent a financial system using a weighted directed graph model. We simulate and analyze the impact of financial regulations regarding the collateralization of derivative trades on systemic risk, employing a novel open source risk engine. The analysis finds that introducing...

The rationale of Econographicology revolves around the efficacy of multi-dimensional (MD) graphs as the most effective analytical tool for visualization of any economic phenomena. The main motivation behind the creation of Econographicology is to evaluate graphs evolved so far in economics and...

We experimentally study the emergence of networks under a known external threat. To be more specific, we deal with the question if subjects in the role of a strategic Designer are able to form safe and efficient networks while facing a strategic Adversary who is going to attack their networks....

Many hierarchical techniques to solve large Markov decision processes (MDPs) are based on the partition of the state space into strongly connected components (SCCs) that can be classified into some levels. In each level, smaller problems named restricted MDPs are solved, and then these partial...

The article investigates the connections between the prices of biofuels and many traded commodities and other relevant assets in Europe, USA and Brazil. The analysis uses a comprehensive dataset covering price data for 32 relevant traded titles over the period 2003-2015. Main contribution of...