TY - JOUR AU - Heidtmann, Klaus T1 - Internet-Graphen JO - Informatik-Spektrum PY - 2013/ VL - 36 IS - 5 SP - 440 EP - 448 UR - http://dx.doi.org/10.1007/s00287-012-0654-z M3 - 10.1007/s00287-012-0654-z KW - Graph KW - Graphen KW - Informatik KW - Informatik-Spektrum KW - Internet KW - Spektrum KW - graphs L1 - SN - N1 - Internet-Graphen - Springer N1 - AB - Bildeten die Keimzellen des Internet noch kleine und einfach strukturierte Netze, so vergrößerten sich sowohl seine physikalischen als auch seine logischen Topologien später rasant. Wuchs einerseits das Netz aus Rechnern als Knoten und Verbindungsleitungen als Kanten immer weiter, so bedienten sich andererseits gleichzeitig immer mehr Anwendungen dieser Infrastruktur, um darüber ihrerseits immer größere und komplexere virtuelle Netze zu weben, z. B. das WWW oder soziale Online-Netze. Auf jeder Ebene dieser Hierarchie lassen sich die jeweiligen Netztopologien mithilfe von Graphen beschreiben und so mathematisch untersuchen. So ergeben sich interessante Einblicke in die Struktureigenschaften unterschiedlicher Graphentypen, die großen Einfluss auf die Leistungsfähigkeit des Internet haben. Hierzu werden charakteristische Eigenschaften und entsprechende Kenngrößen verschiedener Graphentypen betrachtet wie der Knotengrad, die Durchschnittsdistanz, die Variation der Kantendichte in unterschiedlichen Netzteilen und die topologische Robustheit als Widerstandsfähigkeit gegenüber Ausfällen und Angriffen. Es wird dabei Bezug genommen auf analytische, simulative und zahlreiche empirische Untersuchungen des Internets und hingewiesen auf Simulationsprogramme sowie Abbildungen von Internetgraphen im Internet. ER - TY - JOUR AU - Mucha, Peter J. AU - Richardson, Thomas AU - Macon, Kevin AU - Porter, Mason A. AU - Onnela, Jukka-Pekka T1 - Community Structure in Time-Dependent, Multiscale, and Multiplex Networks JO - Science PY - 2010/ VL - 328 IS - 5980 SP - 876 EP - 878 UR - http://www.sciencemag.org/content/328/5980/876.abstract M3 - 10.1126/science.1184819 KW - communities KW - community KW - evolving KW - graphs KW - networks KW - time L1 - SN - N1 - Community Structure in Time-Dependent, Multiscale, and Multiplex Networks N1 - AB - Network science is an interdisciplinary endeavor, with methods and applications drawn from across the natural, social, and information sciences. A prominent problem in network science is the algorithmic detection of tightly connected groups of nodes known as communities. We developed a generalized framework of network quality functions that allowed us to study the community structure of arbitrary multislice networks, which are combinations of individual networks coupled through links that connect each node in one network slice to itself in other slices. This framework allows studies of community structure in a general setting encompassing networks that evolve over time, have multiple types of links (multiplexity), and have multiple scales. ER - TY - GEN AU - Ghosh, Rumi AU - Lerman, Kristina A2 - T1 - Structure of Heterogeneous Networks JO - PB - AD - PY - 2009/ VL - IS - SP - EP - UR - http://arxiv.org/abs/0906.2212 M3 - KW - graph KW - graphs KW - heterogenous KW - measures KW - multi-mode KW - networks KW - sna L1 - N1 - [0906.2212] Structure of Heterogeneous Networks N1 - AB - Heterogeneous networks play a key role in the evolution of communities and

the decisions individuals make. These networks link different types of

entities, for example, people and the events they attend. Network analysis

algorithms usually project such networks unto simple graphs composed of

entities of a single type. In the process, they conflate relations between

entities of different types and loose important structural information. We

develop a mathematical framework that can be used to compactly represent and

analyze heterogeneous networks that combine multiple entity and link types. We

generalize Bonacich centrality, which measures connectivity between nodes by

the number of paths between them, to heterogeneous networks and use this

measure to study network structure. Specifically, we extend the popular

modularity-maximization method for community detection to use this centrality

metric. We also rank nodes based on their connectivity to other nodes. One

advantage of this centrality metric is that it has a tunable parameter we can

use to set the length scale of interactions. By studying how rankings change

with this parameter allows us to identify important nodes in the network. We

apply the proposed method to analyze the structure of several heterogeneous

networks. We show that exploiting additional sources of evidence corresponding

to links between, as well as among, different entity types yields new insights

into network structure.

ER - TY - CONF AU - Zhu, Feida AU - Chen, Chen AU - Yan, Xifeng AU - Han, Jiawei AU - Yu, Philip S A2 - T1 - Graph OLAP: Towards Online Analytical Processing on Graphs T2 - Proc. 2008 Int. Conf. on Data Mining (ICDM'08), Pisa, Italy, Dec. 2008. PB - CY - PY - 2008/12 M2 - VL - IS - SP - EP - UR - M3 - KW - graph KW - graphs KW - olap KW - sna L1 - SN - N1 - Resource: Graph OLAP: Towards Online Analytical Processing on Graphs N1 - AB - ER - TY - GEN AU - A2 - Dau, Frithjof A2 - Mugnier, Marie-Laure A2 - Stumme, Gerd T1 - Conceptual Structures: Common Semantics for Sharing Knowledge, 13th International Conference on Conceptual Structures, ICCS 2005, Kassel, Germany, July 17-22, 2005, Proceedings JO - PB - Springer AD - PY - 2005/ VL - 3596 IS - SP - EP - UR - http://www.kde.cs.uni-kassel.de/conf/iccs05 M3 - KW - 2005 KW - Germany KW - Kassel KW - analysis KW - concept KW - conceptual KW - conference KW - fca KW - formal KW - graphs KW - iccs KW - knowledge KW - l3s KW - myown KW - proceedings KW - sharing KW - structures L1 - N1 - Publications of Gerd Stumme N1 - AB - ER - TY - GEN AU - A2 - Dau, Frithjof A2 - Mugnier, Marie-Laure A2 - Stumme, Gerd T1 - Contributions to ICCS 2005 JO - PB - kassel university press AD - Kassel PY - 2005/ VL - IS - SP - EP - UR - http://www.kde.cs.uni-kassel.de/conf/iccs05 M3 - KW - 2005 KW - Germany KW - Kassel KW - analysis KW - concept KW - conceptual KW - conference KW - fca KW - formal KW - graphs KW - iccs KW - knowledge KW - l3s KW - myown KW - proceedings KW - sharing KW - structures L1 - N1 - Publications of Gerd Stumme N1 - AB - ER - TY - GEN AU - A2 - Delugach, H. A2 - Stumme, G. T1 - Conceptual Structures -- Broadening the Base. Proc. 9th International Conference on Conceptual Structures JO - PB - Springer AD - Heidelberg PY - 2001/ VL - 2120 IS - SP - EP - UR - M3 - KW - 2001 KW - analysis KW - cg KW - cgs KW - concept KW - conceptual KW - fca KW - formal KW - graphs KW - iccs KW - myown KW - structures L1 - N1 - Publications of Gerd Stumme N1 - AB - ER - TY - CONF AU - Eklund, P. AU - Groh, B. AU - Stumme, G. AU - Wille, R. A2 - Ganter, B. A2 - Mineau, G. W. T1 - Contextual-Logic Extension of TOSCANA. T2 - Conceptual Structures: Logical, Linguistic, and Computational PB - Springer CY - Heidelberg PY - 2000/ M2 - VL - 1867 IS - SP - 453 EP - 467 UR - http://www.kde.cs.uni-kassel.de/stumme/papers/2000/ICCS_toscanaextension.pdf M3 - KW - 2000 KW - analysis KW - cg KW - cgs KW - concept KW - conceptual KW - fca KW - formal KW - graph KW - graphs KW - iccs KW - myown KW - toscana L1 - SN - N1 - Publications of Gerd Stumme N1 - AB - ER - TY - JOUR AU - Stumme, G. T1 - 8th International Conference on Conceptual Structures. Conference Report JO - Knowledge Organization PY - 2000/ VL - 27 IS - 3 SP - EP - UR - http://www.kde.cs.uni-kassel.de/stumme/papers/2000/ConferenceReportICCS00.pdf M3 - KW - 2000 KW - analysis KW - cg KW - concept KW - conceptual KW - conference KW - fcacgs KW - formal KW - graphs KW - iccs KW - lattices KW - myown KW - report KW - structures L1 - SN - N1 - Publications of Gerd Stumme N1 - AB - ER - TY - GEN AU - A2 - Stumme, G. T1 - Working with Conceptual Structures -- Contributions to ICCS 2000. Suppl. Proc. 8th International

Conference on Conceptual Structures (ICCS 2000) JO - PB - Shaker AD - Aachen PY - 2000/ VL - IS - SP - EP - UR - M3 - KW - 2000 KW - analysis KW - cg KW - cgs KW - concept KW - conceptual KW - conference KW - fca KW - formal KW - graphs KW - iccs KW - myown KW - proceedings KW - structures L1 - N1 - Publications of Gerd Stumme N1 - AB - ER - TY - CONF AU - Mineau, Guy AU - Stumme, Gerd AU - Wille, Rudolf A2 - Tepfenhart, W. A2 - Cyre, W. T1 - Conceptual Structures Represented by Conceptual Graphs and Formal Concept Analysis T2 - Conceptual Structures: Standards and Practices. Proc. ICCS '99 PB - Springer CY - Heidelberg PY - 1999/ M2 - VL - 1640 IS - SP - 423 EP - 441 UR - http://www.kde.cs.uni-kassel.de/stumme/papers/1999/ICCS99.pdf M3 - KW - 1999 KW - analysis KW - cg KW - cgs KW - concept KW - conceptual KW - fca KW - formal KW - graphs KW - iccs KW - knowledge KW - myown KW - representation KW - structures L1 - SN - N1 - Publications of Gerd Stumme N1 - AB - ER - TY - CONF AU - Prediger, Susanne AU - Wille, Rudolf A2 - Tepfenhart, William M. A2 - Cyre, Walling R. T1 - The Lattice of Concept Graphs of a Relationally Scaled Context T2 - ICCS PB - Springer CY - PY - 1999/ M2 - VL - 1640 IS - SP - 401 EP - 414 UR - http://dblp.uni-trier.de/db/conf/iccs/iccs99.html#PredigerW99 M3 - KW - analysis KW - cg KW - concept KW - fca KW - formal KW - graph KW - graphs L1 - SN - 3-540-66223-5 N1 - N1 - AB - ER - TY - CONF AU - Wille, Rudolf A2 - Lukose, D. A2 - Delugach, H. A2 - Keeler, M. A2 - Searle, L. A2 - Sowa, J. F. T1 - Conceptual Graphs and Formal Concept Analysis T2 - Conceptual Structures: Fulfilling Peirce's Dream PB - Springer CY - Heidelberg PY - 1997/ M2 - VL - 1257 IS - SP - 290 EP - 303 UR - M3 - KW - ag1 KW - analysis KW - begriffsanalyse KW - cg KW - concept KW - conceptual KW - darmstadt KW - fba KW - fca KW - formal KW - graph KW - graphs L1 - SN - N1 - N1 - AB - ER - TY - BOOK AU - Sowa, J. F. A2 - T1 - Conceptual Structures: Information Processing in Mind and Machine PB - Addison-Wesley Publishing Company AD - Reading, MA PY - 1984/ VL - IS - SP - EP - UR - M3 - KW - cg KW - cgs KW - conceptual KW - graphs KW - information KW - structures L1 - SN - N1 - N1 - AB - ER -