Cliques, clubs and clans

Die Analyse sozialer Beziehungen braucht adäquate Konzepte zur Bestimmung sozialer Gruppen. Neben theoretischen Bestimmungen unterschiedlicher Gruppentypen, geht es dem Autor in erster Linie um die Operationalisierbarkeit der Gruppenkonzeptionen für die empirischen Untersuchungen des sozialen Netzwerks. Zur Analyse der unterschiedlichen Außen- und Innenbeziehungen von Gruppen werden Graph-theoretische Cluster- Konzepte verwandt. Die unterschiedlichen Cluster-Konzepte zur Analyse von Clubs, Cliquen und Clans werden vorgestellt, und ihre Beziehung untereinander wird untersucht. (BG

Cliques, clubs and clans

Die Analyse sozialer Beziehungen braucht adäquate Konzepte zur Bestimmung sozialer Gruppen. Neben theoretischen Bestimmungen unterschiedlicher Gruppentypen, geht es dem Autor in erster Linie um die Operationalisierbarkeit der Gruppenkonzeptionen für die empirischen Untersuchungen des sozialen Netzwerks. Zur Analyse der unterschiedlichen Außen- und Innenbeziehungen von Gruppen werden Graph-theoretische Cluster- Konzepte verwandt. Die unterschiedlichen Cluster-Konzepte zur Analyse von Clubs, Cliquen und Clans werden vorgestellt, und ihre Beziehung untereinander wird untersucht. (BG

European Union power and regional involvement:A Case Study Of The Political Implications Of The Reform Of The Structural Funds For Ireland

The Reform of the Structural Funds process in Ireland, has the potential over time, to curttail the power of the national central public authorities, while increasing the political effectiveness of other actors. 'This policy process comprises a chain of collective decision making processes around important issues. These issues belong to different policy arenas, called the national and sub-national policy arenas. The policy outcomes in the different arenas determined by the interplay of stakeholders with varying capabilities, policy preferences and saliences. Sub-national level actors in Ireland, have become more effective over time in the sub-national policy arena, but remain excluded from the national policy arena. However, the Europcan Commission Directorate General XVI for Regional policy has emerged over time, as the most central actor in both arenas

European Union power and regional involvement:A Case Study Of The Political Implications Of The Reform Of The Structural Funds For Ireland

The Reform of the Structural Funds process in Ireland, has the potential over time, to curttail the power of the national central public authorities, while increasing the political effectiveness of other actors. 'This policy process comprises a chain of collective decision making processes around important issues. These issues belong to different policy arenas, called the national and sub-national policy arenas. The policy outcomes in the different arenas determined by the interplay of stakeholders with varying capabilities, policy preferences and saliences. Sub-national level actors in Ireland, have become more effective over time in the sub-national policy arena, but remain excluded from the national policy arena. However, the Europcan Commission Directorate General XVI for Regional policy has emerged over time, as the most central actor in both arenas

Distance-generalized Core Decomposition

The $k$-core of a graph is defined as the maximal subgraph in which every vertex is connected to at least $k$ other vertices within that subgraph. In this work we introduce a distance-based generalization of the notion of $k$-core, which we refer to as the $(k,h)$-core, i.e., the maximal subgraph in which every vertex has at least $k$ other vertices at distance $\leq h$ within that subgraph. We study the properties of the $(k,h)$-core showing that it preserves many of the nice features of the classic core decomposition (e.g., its connection with the notion of distance-generalized chromatic number) and it preserves its usefulness to speed-up or approximate distance-generalized notions of dense structures, such as $h$-club. Computing the distance-generalized core decomposition over large networks is intrinsically complex. However, by exploiting clever upper and lower bounds we can partition the computation in a set of totally independent subcomputations, opening the door to top-down exploration and to multithreading, and thus achieving an efficient algorithm