TY - RPRT A1 - Nolte, Jörg T1 - 12. GI/ITG Fachgespräch Sensornetze N2 - Drahtlose Sensornetze stellen eine vielversprechende Technologie zur Beobachtung und Beeinflussung von Vorgängen in der realen Welt dar. Autonome Sensorknoten nehmen dabei Parameter der Umwelt durch Sensoren wahr und können diese durch Aktoren beeinflussen. Viele solcher autonomen und ressourcenbeschränkten Knoten kooperieren dabei mittels drahtloser Kommunikation. Die Eigenschaften dieser Knoten und Netze implizieren eine Vielzahl von neuartigen Herausforderungen, die sich in einer regen Forschungsaktivität widerspiegeln. Ziel dieser Reihe von Fachgesprächen ist es, Wissenschaftlerinnen und Wissenschaftlern aus Hochschule und Industrie die Möglichkeit zu einem informellen Gedankenaustausch zu geben und die Kooperation in diesem multidisziplinären Forschungsbereich zu verstärken. T3 - Computer science reports / Institut für Informatik - 2013,03 KW - Drahtloses Sensorsystem Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-28986 ER - TY - RPRT A1 - Herajy, Mostafa A1 - Heiner, Monika T1 - Snoopy computational steering framework - user manual version 1.0 N2 - In this manual we discuss the use of Snoopy’s computational steering framework to simulate and interactively steer (stochastic, continuous, hybrid) Petri nets, e.g., biochemical network models. In a typical application scenario, a user constructs a model using a Petri net editing tool (e.g., Snoopy). Afterwards, the Petri net model is submitted to one of the running servers to quantitatively simulate it. Later, other users can adapt their steering GUIs to connect to this model. One of the connected users initialises the simulation while others could stop, pause, or restart it. When the simulator initially starts, it uses the current model settings to run the simulation. Later, other users can remotely join the running simulation and change on the fly parameters and the current marking. T3 - Computer science reports / Institut für Informatik - 2013,02 KW - Datenstruktur KW - Zuverlässigkeit Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-29034 ER - TY - RPRT A1 - Noack, Tino A1 - Schmitt, Ingo A1 - Saretz, Sascha T1 - OVA-based multi-class classification for data stream anomaly detection N2 - Mobile cyber-physical systems (MCPSs), such as the International Space Station, are equipped with sensors which produce sensor data streams. Continuous changes like wear and tear influence the system states of a MCPS continually during runtime. Hence, monitoring is necessary to provide reliability and to avoid critical damage. Although, the monitoring process is limited by resource restrictions. Therefore, the focal point of the present paper is on time-efficient multi-class data stream anomaly detection. Our contribution is bifid. First, we use a one-versusall classification model to combine a set of heterogeneous one-class classifiers consecutively. Such a chain of one-class classifiers provides a very flexible structure while the administrative overhead is reasonably low. Second, based on the classifier chain, we introduce classifier pre-selection. T3 - Computer science reports / Institut für Informatik - 2013,01 KW - Informatik Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-28187 ER -