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Theoretical and technological progress has revived the interest in the design of services for the support of co-located human-human communication and collaboration, witnessing the start of several large-scale projects over the last few years. Most of these projects focus on meetings and/or lecture situations. However, user-centred design and evaluation(More)
— Coalitions, which allow traders to form teams, can sometimes accomplish tasks more efficiently than individuals. The core has become a popular solution concept in economic applications for researchers in Computer Science, because it provides a way to find stable sets. However, its problems hinder researchers from applying it to a real world market. This(More)