Moral Foundation Theory states that groups of different observers may rely on partially dissimilar sets of moral foundations, thereby reaching different moral valuations. The use of functional imaging techniques has revealed a spectrum of cognitive styles with respect to the differential handling of novel or corroborating information that is correlated to political affiliation. Here we characte...

Assortative mechanisms can overcome tragedies of the commons that otherwise result in dilemma situations. Assortativity criteria include various forms of kin selection, greenbeard genes, and reciprocal behaviors, usually presuming an exogenously fixed matching mechanism. Here, we endogenize the matching process with the aim of investigating how assortativity itself, jointly with cooperation, is...

Online social networks have become a popular communication tool for the masses. People are constantly sharing their opinions on social media. Therefore, social networking websites are a rich source for opinion mining. By analyzing the various opinions expressed on such sites, we can determine how well a product is doing in the current market. In this paper, we propose a system which uses the po...

The theory, models and architectures of intelligent agents are based loosely on the theory of intentions from Bratman resulting in the so-called BDI agents. Although this functions well for single agents it has been long recognized that this approach falls short for multi-agent systems. It lacks appropriate social aspects to make natural interaction possible. The original concept for intelligen...

We consider the problem of inferring the most likely social network given connectivity constraints imposed by observations of outbreaks within the network. Given a set of vertices (or agents) V and constraints (or observations) Si ⊆ V we seek to find a minimum loglikelihood cost (or maximum likelihood) set of edges (or connections) E such that each Si induces a connected subgraph of (V,E). For ...

This paper reviews the results of social protection programmes which aim for beneficiaries to graduate out after they reach a certain level of assets or time. It explores whether people who graduate from the programmes are lifted sustainably out of poverty, and what changes they experience in their lives and livelihoods. The first part of the report reviews general lessons about how graduation ...