This paper examines the notion of ‘irrelevant’alternatives in the context of social choice problems. It is shown that seemingly irrelevant alternatives could be relevant because of their information content. This leads to a consideration of aggregation rules where an endogenous condition of independence of irrelevant alternatives is imposed. The analysis leads to the characterization of a uniqu...

There are many ways to elicit honest probabilistic forecasts from experts. Once those elicited, there aggregate them into a single forecast. Should the choice of elicitation method inform aggregation method? In “From Proper Scoring Rules Max-Min Optimal Forecast Aggregation,” Neyman and Roughgarden establish connection between these two problems. To every they associate that improves as much po...

In this paper we give an overview of the DBin Semantic Web information manager. Then we describe how it enables users to create and experience the Semantic Web by exchanging RDF knowledge in P2P "topic" channels. Once sufficient information has been collected locally, rich and fast browsing of the Semantic Web becomes possible without generating external traffic or computational load. In this w...

Concave properties play a dominate role in solving both classic and fuzzy optimization problems. However, since fuzzy problems are generally represented by sets, not crisp numbers, various aggregation schemes are needed to manipulate and to combine the different elements in a fuzzy optimization problem. Based on these different aggregations, various concavity properties can be formulated and ex...

An important issue regarding the deeper understanding of social and organisational phenomena is the interaction and the linkage between micro and macro layers. The micro-macro-link deals with the emergent aggregation of processes and actions on the micro-level and with structures, rules and roles on the macro-level. This paper presents recent results of the “socionics” project ASKO, which is a ...