Rückblick: Virtual Campfire – A Hero's Journey into Multimedia Storytelling

Posted on 29. Januar 2010 by Christian Timmerer

IMG_2195Am 29. Januar sprach Dr. Ralf Klamma über sein Virtual Campfire – A Hero’s Journey into Multimedia Storytelling.

Kurzfassung: Frequent usage of mobile devices such as cell phones, smart phones, PDAs, or GPS navigators creates a large amount of multimedia data. Ultra High-Speed Mobile Information and Communication (UMIC) is one of the research clusters established under the excellence initiative of the German government. Within UMIC, research is being carried out on next generation mobile applications. Based on experiences of developing a set of advanced mobile applications for communities of practice within the scenario Virtual Campfire, our framework for mobile multimedia management is concerned with mobile multimedia semantics, with multimedia metadata, with multimedia context management, and with multimedia uncertainty management. Results are evaluated on a mobile multimedia community testbed MobSOS. We aim at creation, annotation, adaptation, sharing, and consumption of

mobile multimedia data in professional communities with heterogeneous and varying needs.

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Das Kolloquium war gut besucht (siehe oben) und die Folien des Vortrags stehen online zur Verfügung (siehe unten).

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Lakeside Labs / TEWI Kolloquium:

Posted on 28. Januar 2010 by ftf_admin

3335029e75Prof. Dr.-Ing. Daniele Nardi

Small UAVs for Emergency Response

Wednesday, February 24th 2010
11:00, Room L4.1.114
Lakeside Labs.

The talk addresses the potential for application of small UAVs, such as quadrotors, for emergency response. We initially analyze a number of emergency scenarios and motivate the need for situation awareness, in order to plan and monitor the actions of the emergency response team. We argue that small UAVs can be effectively deployed to improve the situation awareness, and, consequently, the performance of the operation. Besides the flying and control capabilities of the platform, a key issue for the development of eff

ective solutions in t

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he targeted domain, is the ability to easily develop software that acquires data on the scenario in such a way as to maximize the amount of knowledge for the operator. Specifically, we describe the main features of the OpenRDK framework for developing robotic applications, implemented at Sapienza Univ. Di Roma, and currently distributed to a few other research groups. Moreover, we present some examples developed through OpenRDK on our experimental quadrotor system. We conclude by addressing future research, and, in particular, forms of cooperation in robotic teams including UAVs.

Biography:
Daniele Nardi is Full Professor at Facoltà Ingegneria, Sapienza Univ. Roma, Dipartimento Informatica e Sistemistica, since 2000. His current research interests are in Artificial Intelligence, Cognitive Robotics, Multi-Agent/Multi-Robot Systems and Search and Rescue Robotics. He is author of more than 100 scientific publications, recipient of „IJCAI-91 Publisher’s Prize“ and of Prize „Intelligenza Artificiale 1993“ and ECCAI Fellow. He is currently Vice President of RoboCup Federation, Coordinator of the Curricula in Computer Engineering at Sapienza Univ. Roma and Director of the research laboratory „Cognitive Robot Teams“.

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Zufallsgesteuerte Algorithmen – der Natur abgeschaut

Posted on 22. Januar 2010 by Annette Lippitsch

MittermeirIn der Regel erwarten wir von einem Algorithmus, dass er möglichst rasch das richtige (oder optimale) Ergebnis liefert. Für eine Fülle von Problemen ist dies jedoch nur dann möglich, wenn der Problemumfang relativ klein ist. Es handelt sich dabei um sogenannte NP-harte und NP-vollständige Probleme.

Im Vortrag wollen wir anhand eines Rundreiseproblems (Travelling Salesman) die Problematik NP-harter Probleme zeigen und anschließend Heuristiken besprechen, die zwar die Optimalität der Lösung nicht garantieren können, von denen jedoch gezeigt werden kann, dass sie nach vergleichsweise kurzer Zeit zu einer Lösung in der Nähe des Optimums konvergieren.

Als Beispiel für von der Natur inspirierten Algorithmen werden ausgehend vom Verhalten biologischer Ameisen die Metaheuristiken Ant System und Ant Colony System entwickelt und diskutiert in welcher Weise „künstliche Ameisen“ von ihren natürlichen Vorbildern abweichen müssen, um auch für umfangreiche Problemstellungen sehr gute Ergebnisse zu liefern.

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Virtual Campfire – A Hero’s Journey into Multimedia Storytelling

Posted on 11. Januar 2010 by Christian Timmerer

Abstract

Frequent usage of mobile devices such as cell phones, smart phones, PDAs, or GPS navigators creates a large amount of multimedia data. Ultra High-Speed Mobile Information and Communication (UMIC) is one of the research clusters established under the excellence initiative of the German government. Within UMIC, research is being carried out on next generation mobile applications. Based on experiences of developing a set of advanced mobile applications for communities of practice within the scenario Virtual Campfire, our framework for mobile multimedia management is concerned with mobile multimedia semantics, with multimedia metadata, with multimedia context management, and with multimedia uncertainty management. Results are evaluated on a mobile multimedia community testbed MobSOS. We aim at creation, annotation, adaptation, sharing, and consumption of mobile multimedia data in professional communities with heterogeneous and varying needs.

Curriculum Vitae

Dr. Ralf Klamma has a diploma degree (1995) and a doctoral degree (2000) both in computer science from RWTH Aachen University. Currently, Ralf leads the research group “metadata in community information systems” at the information systems chair, RWTH Aachen University. His research covers information systems theory, the application of information systems in engineering, cultural sciences, and virtual communities, social software, social network analysis, technology enhanced learning, geographic information systems, cultural heritage management, and new product development. He is the technical leader and community facilitator of the EU IP ROLE (responsive open learning environments) and member of the Aachen research cluster „Ultra High Speed Mobile Information and Communication“ (UMIC). He serves as associate editor for international journals like IEEE Transactions on Learning Technologies, IJASS, IJTEL, and IJSHC. He has more than 120 refereed publications in journals, conference proceedings and edited books and edited many conference and workshop proceedings. He is reviewer for journals like CACM, IEEE Multimedia, IEEE TKDE, IEEE Internet Computing, Information Systems and Information Systems Frontiers and conferences including ICIS, ECIS, CAiSE, CHI, EC-TEL, ACM GROUP, ACM Hypertext, CSCL and others. He is member of the German Informatics Society (GI-29676).

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Flexible decision support in dynamic interorganizational networks

Posted on 8. Januar 2010 by Christian Timmerer

wolfketterKolloquium von Wolf Ketter auf unbestimmte Zeit verschoben.

Abstract: An effective Decision Support System (DSS) should help its users improve decision-making in complex, information-rich, dynamic environments. We present a feature gap analysis of current decision support technologies, and we identify a set of DSS Desiderata, properties that can contribute both effectiveness and flexibility to users in such environments. We show that there is a gap between the features provided by current DSS technologies and the DSS Desiderata we aim for. We present a design-science approach that extends the boundaries of human decision-makers by creating a new and innovative artifact called „evaluator service networks“ at the confluence of people, organizations, and technology. Our artifact enables users to compose decision behaviors from separate, configurable components, and allows dynamic construction of analysis and modeling tools from small, single-purpose evaluator services. The result is a network that can easily be configured to test hypotheses and analyze the impact of various choices for elements of decision processes. We have implemented and tested this design in an interactive version of the MinneTAC trading agent, an agent designed for the Trading Agent Competition for Supply Chain Management. We present an example of an evaluator service network that determines sales prices in a rich, dynamic trading environment. Additionally we describe visual interface elements that allow users to see and manipulate the configuration of the network, and to construct economic dashboards that can display the current and historical state of any node in the network.

CV: Wolf Ketter is an assistant professor for business networks and markets at the Department of Decision and Information Sciences at the Rotterdam School of Management of the Erasmus University. Furthermore, he is a research member of the Computer Science and Engineering Department of the University of Minnesota. He founded and directs the Learning Agents Research Group at Erasmus (LARGE) where we research, develop, and use multi-agent systems in combination with machine learning methods to work on interesting problems in business and economic environments. He has published his work on major international conferences like AAAI or AAMAS and in reputed international journals like Decision Support Systems or the International Journal of Electronic Commerce.

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Rückblick: Wirtschaftsinformatik als Bastel-, Fragebogen- oder doch als Wissenschaftsdisziplin?

Posted on 18. Dezember 2009 by Christian Timmerer

Am 14. Dezember sprach Dr. Eitel von Maur über Wirtschaftsinformatik als Bastel-, Fragebogen- oder doch als Wissenschaftsdisziplin?

Kurzfassung: Seit einiger Zeit ist in der Wirtschaftsinformatik ein Diskurs über Forschungsmethoden zu beobachten, der sich primär auf einen vermeintlichen Gegensatz zwischen empirisch-quantitativer Forschung und Design Science Research konzentriert. Nicht zuletzt dürfte dieser Diskurs dem Umstand geschuldet sein in einer sich erheblich wandelnden Publikationspraxis Wege finden zu müssen, die die persönlichen wie institutionellen Erfolgskriterien zu befördern verspricht. Dabei lässt sich … [mehr]

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Rückblick: Der menschlichen Stimme auf der Spur

Posted on 15. Dezember 2009 by Christian Timmerer

IMG_1539Am Mittwoch, 9. Dezember 2009, waren wir gemeinsam mit Univ.-Prof. Dr. Manfred Kaltenbacher der menschlichen Stimme auf der Spur. Beeindruckend wurde uns vorgeführt, wie die menschliche Stimme im Kehlkopf entsteht und

…am Ende ist dann alles „nur Mathematik“, lies uns Prof. Kaltenbacher wissen.

Zum Vortrag: Das Stimmsignal entsteht im Kehlkopf durch die beiden zwischen 100 – 400 Hz periodisch schwingenden Stimmlippen (umgangssprachlich auch Stimmbänder genannt). Die dreidimensionalen Stimmlippenschwingungen, sowie Zusammenhänge zwischen Stimmlippendynamik und Qualität des akustischen Signals sind weitgehend unerforscht. Durch das in den letzten Jahren verstärkte interdisziplinäre Zusammenarbeiten von Medizinern, Ingenieuren, Informatikern und Mathematikern konnten jedoch einige grundlegende Fragen geklärt werden. Weitere Details finden Sie hier.

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Der Vortrag war gut besucht und war auch einige interessante Fragestellungen auf, wie z.B. welche Rechenleistung für die Berechnung der Simulationen notwendig ist und ob es in der Zukunft möglich sein wird künstliche Kehlköpfe herstellen bzw. einsetzen zu können. Ersteres konnte beantwortet werden, jedoch nicht mit Gerätschaften hier in Klagenfurt bzw. Österreich, aber letzteres ist noch Zukunftsmusik.

Der menschlichen Stimme auf der Spur

Kürzlich stattgefundene TEWI-Kolloquien: Wirtschaftsinformatik als Bastel-, Fragebogen, oder doch als Wissenschaftsdiszplin? von Dr. Eitel von Maur, 14. Dezember 2009, 14:00 s.t., HS 3 bzw. Economics as a self-organized evolutionary system von Prof. Dr. Stefan Thurner,  14. Dezemeber 2009, 16:00, presentation-room B4.1.114, Lakeside Labs.

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Lakeside Labs / TEWI Colloquium

Posted on 10. Dezember 2009 by ftf_admin

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Economics as a self-organized evolutionary system

Monday, December 14th 2009 4 pm, presentation-room B4.1.114, Lakeside Labs.

Abstract:

We propose a simple model of evolution dynamics and demonstrate it in a framework of economic dynamics. New goods and services are endogenously produced through combinations of existing goods. As soon as new goods enter the market they may compete against already existing goods, in other words new products can have destructive effects on existing goods. As a result of this competition existing goods may be driven out from the market – often causing cascades of secondary defects (Schumpeterian gales of destruction).
The model leads to generic dynamics characterized by phases of relative economic stability followed by phases of massive restructuring of markets — which could be interpreted as Schumpeterian  business cycles. Model timeseries of product diversity and productivity reproduce several stylized facts of economics timeseries on long timescales such as GDP or business failures, including non-Gaussian fat tailed distributions, volatility clustering etc. The model is phrased in an open, non-equilibrium setup which can be understood as a self organized critical system. Its diversity dynamics can be understood by the time-varying topology of the active production networks.

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Re: Promising avenues for interdisciplinary research in vision

Posted on 8. Dezember 2009 by Christian Timmerer
Am 25. Juni 2009 hielt Dr. Oge Marques, Florida Atlantic University oben genannten Vortrag und hier möchten wir nochmals einen Rückblick auf diesen Vortrag wagen.
Abstract: Research in vision science has an intrinsic potential for integrating contributions from psychology, computer science, engineering, optics, neuroscience, and physiology, among many other areas of knowledge. During the past 15 years, many vision researchers have successfully demonstrated that the results of such interdisciplinary efforts can advance the state of the art and lead to promising discoveries. This talk presents representative research results that blend experiments in human visual perception and computer vision models to solve challenging vision problems. Particularly, it discusses the issues of object and scene recognition and the role of context and shows how they are being addressed by the leading researchers in the field. After introducing selected basic concepts of object detection and recognition, scene recognition and analysis, and the role of context, we will discuss representative attempts to model the process of context influences in object perception. We will then motivate further research efforts by presenting a number of fascinating open problems in this field and suggesting how they can be approached in a truly interdisciplinary way.
Promising avenues for interdisciplinary research in vision

CV: Dr. Oge Marques is an Associate Professor in the Department of Computer Science and Engineering at Florida Atlantic University in Boca Raton, Florida. He is currently a guest professor with ITEC at University of Klagenfurt. He received his Ph.D. in Computer Engineering from Florida Atlantic University in 2001, his Masters in Electronics Engineering from Philips International Institute (Eindhoven, NL) in 1989 and his Bachelor’s Degree in Electrical Engineering from UTFPR (Curitiba, Brazil), where he also taught for more than 10 years before moving to the USA. His research interests include: image processing, analysis, annotation, search, and retrieval; human and computer vision; and video processing and analysis. He has more than 20 years of teaching and research experience in the fields of image processing and computer vision, in different countries (USA, Austria, Brazil, Netherlands, Spain, and India) and capacities. He is the (co-) author of 4 (four) books in these topics, including the forthcoming textbook “Practical Image and Video Processing Using MATLAB” (Wiley, 2010). He has also published several book chapters and more than 50 refereed journal and conference papers in these fields. He serves as a reviewer and Editorial Board member for several leading journals in computer science and engineering. He is a member of ACM, IEEE, IEEE Computer Society, IEEE Education Society, and the honor societies of Phi Kappa Phi and Upsilon Pi Epsilon.
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