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Christoph Weyer

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Christoph Weyer
Room 4.091, building E
Am Schwarzenberg-Campus 3
21073 Hamburg
phone+49 40 42878 - 3375
fax+49 40 427 - 3 - 10456
e-mail

Christoph Weyer received his degree Diplom-Informatiker (FH) in Computer Science from the University of Applied Sciences Wiesbaden in Germany in 1995 and subsequently worked as an independent contractor, especially in the area of management of distributed systems. Since 2003 he holds a position as system administrator at the Institute of Telematics at Hamburg University of Technology and received his Master of Science in Information and Media Technologies in 2006. His research interests are in the area of distributed systems with a current focus on applying self-stabilization in wireless sensor networks.


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Teaching

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Publications

Volker Turau and Christoph Weyer. Cascading failures in complex networks caused by overload attacks. Journal of Heuristics, 25:1–23, May 2019.
@Article{Telematik_Heuristics_2019, author = {Volker Turau and Christoph Weyer}, title = {Cascading failures in complex networks caused by overload attacks}, pages = {1-23}, journal = {Journal of Heuristics}, volume = {25}, number = {}, day = {2}, month = may, year = 2019, }
Abstract: Complex networks are known to be vulnerable to the failure of components in terms of structural robustness. An as yet less researched topic is dynamical robustness, which refers to the ability of a network to maintain its dynamical activity against local disturbances. This paper introduces a new type of attack—the overload attack—to disturb the network’s dynamical activity. The attack is based on the load redistribution model for sequential attacks. The main contribution are heuristics to assess the vulnerability of complex networks with respect to this type of attack. The effectiveness of the heuristics is demonstrated with an application for real power networks.
Volker Turau and Christoph Weyer. Cascading Failures Caused by Node Overloading in Complex Networks. In Proceedings of the Joint Workshop on Cyber-Physical Security and Resilience in Smart Grids, April 2016, pp. 1–6. Vienna, Austria.
@InProceedings{Telematik_CPSR-SG2016_SmartGrid, author = {Volker Turau and Christoph Weyer}, title = {Cascading Failures Caused by Node Overloading in Complex Networks}, booktitle = {Proceedings of the Joint Workshop on Cyber-Physical Security and Resilience in Smart Grids}, pages = {1-6}, day = {12}, month = apr, year = 2016, location = {Vienna, Austria}, }
Abstract: It is well known that complex networks are vulnerable to the failure of hubs in terms of structural robustness. An as yet less researched topic is dynamical robustness, which refers to the ability of a network to maintain its dynamical activity against local disturbances. This paper analyzes the impact of overload attacks in complex networks and gives a precise definition of this type of attack using the load redistribution model. The main contribution is a greedy algorithm to select a small number of candidates for an overload attack maximizing the impact with respect to the number of failed nodes and load increase. The quality of the algorithm is analyzed for a real power grid network.
Volker Turau and Christoph Weyer. Algorithmische Graphentheorie. De Gruyter, Berlin, Germany, 4th edition, October 2015.
@Book{Telematik_Turau_2015_AGT, author = {Volker Turau and Christoph Weyer}, title = {Algorithmische Graphentheorie}, publisher = {De Gruyter}, address = {Berlin, Germany}, edition = {4th}, month = oct, year = 2015, isbn = {978-3-11-041727-2}, }

The complete list of publications is available separately.

Supervised Theses

Completed Theses