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Perspectives on Software Visualization

Dr. Fabian Beck, Universität Stuttgart

03. 09. 2014,   10:00 Uhr,   E.2.69



Abstract: Software visualization addresses the visual representation of software systems, their dynamic execution, and their development process. In this context, diagrams can help software developers, software architects, or researchers understand and analyze the system, to finally improve the software and development process. Those different roles, however, come along with different perspectives and requirements for visualization tools. In my talk, I will give recent examples from my own work how those diverging perspectives can be addressed: On the one hand, high-level visualizations showing complete software systems and their evolution might be leveraged by architects and researchers. On the other hand, small visualizations embedded in the code could support developers in their daily work extending and optimizing the code. Finally, I want to conclude by giving an outlook on future perspectives on software visualization.

Biography: Fabian Beck is a postdoctoral researcher at VISUS, University of Stuttgart, Germany. In 2013, he obtained his Dr. rer. nat. (PhD) degree in computer science from University of Trier. In his dissertation, he investigated multi-dimensional coupling graph structures of software systems. In general, most of his research is focused on methods for visualizing and comparing large and dynamic graphs and hierarchies, often in the context of software systems and their evolution. In recent projects, he also studies the use of word-sized visualizations embedded in source code and text.

Gesture-based authentication: Swinging your way to security



Janusz Konrad | ECE Department, Boston University | July 21 th, 2014, 14:00 CET | Lakeside Labs, Room L4.1.114

Abstract: How many times per day do you need to prove your identity? Perhaps 5, maybe 10 or even 20. Try to access your smartphone and you need a 4-digit PIN at minimum. Need to check email at work and you have to provide username and password. Want to enter a lab and you need to punch in a code, swipe a magnetic card or wave an RFID tag. While cards and tags can be easily lost, codes and passwords are difficult to remember once we have too many of them, and we all do! One answer to this dilemma is to use biometrics such as fingerprints, irises or facial characteristics, but should they be compromised there is no way to replace them. In this talk, I will describe our recent work on using soft biometrics jointly with gestures to authenticate a user. We implicitly use rough proportions of human body shape from skeleton data captured by Kinect camera. Should these soft biometrics become compromised, a user can easily change his/her gesture and prevent the loss of identity. I will describe details of our approach and some experimental results in which we have attained a 1-2% equal error rate on a database of 40 users. We believe this level of performance shows promise for swinging your way to security in a not-too-distant future.

Bio: Janusz Konrad earned the M.Eng. degree from the Technical University of Szczecin, Poland, and the Ph.D. degree from McGill University, Montreal, Canada. From 1989 to 2000 he was with INRS-Telecommunications, Montreal, and since 2000 with Boston University. He has been on Editorial Boards of various IEEE and EURASIP journals related to signal, image and video processing. He was the General Chair of AVSS-2013, a Technical Program Co-Chair of ICIP-2000 and AVSS-2010, and Tutorials Co-Chair of ICASSP-2004. He is a co-recipient of the 2001 Signal Processing Magazine Award, the 2004-05 EURASIP Image Communications Best Paper Award, the AVSS-2010 Best Paper Award and a co-winner of the Semantic Description of Human Activities Contest at ICPR-2010. His research interests include image and video processing, stereoscopic and 3D displays, human-computer interfaces and visual sensor networks.

http://iss.bu.edu/jkonrad

http://vip.bu.edu

Informatikwerkstatt zum Mitmachen



Open Days am Institut für Informatikdidaktik an der Alpen-Adria-Universität Klagenfurt

8. -  31. Juli 2014, Montag bis Donnerstag,9:00 bis 15:00 Uhr

Schnupper-Workshops und Werkstatt zum Mitmachen für Kinder und Jugendliche

Ideenfabrik für Innovativen und kreativen Unterricht für Lehrende

Thema: „Informatik – Ein Kinderspiel“

Das Institut für Informatikdidaktik und das Regionale Fachdidaktikzentrum Informatik Kärnten laden Technik-Interessierte jeden Alters, insbesondere aber Kinder und LehrerInnen aller Fächer ein,

  • stunden- oder tageweise in die Welt der Informatik einzutauchen,
  • Informatikkonzepte im alltäglichen Leben zu entdecken,
  • in der Informatikwerkstatt mitzuarbeiten (z.B. Computer zerlegen und zusammenbauen),
  • eigene Ideen einzubringen und umzusetzen.

infowerkstatt-pic1Unsere Aktivitäten:

  • Schnupper-Workshops zu verschiedenen Informatikthemen (siehe Rückseite) für
    • Kinder ab 4 Jahren
    • SchülerInnen aller Schulstufen und -typen
    • LehrerInnen, v.a. VolksschullehrerInnen und LehramtskandidatInnen aller Fächer
  • Werkstatt zum Mitmachen
    • Wir bauen
      • einen begehbaren Riesen-Computer,
      • ein Datenlabyrinth.
      • Lego-Roboter etc.
    • Wir entwickeln
      • Spiele, Rätsel und Puzzles,
      • Lernvideos und Podcasts,
      • Webseiten und Apps etc.
    • und vieles mehr
  • Ideenfabrik für innovativen und kreativen Unterricht
    • Entwickeln von Unterrichtseinheiten und -materialien für Informatik bzw.
    • fächerübergreifenden Unterricht (Informatikkonzepte für alle Fächer)
    • computerunterstützten Unterricht (E-Learning, Mobile Learning, Tools und Software zum Lernen und Lehren)

Die besten Unterrichtsmaterialien, Ideen und selbstgemachten Spiele werden prämiert!

Nähere Infos und Anmeldung am Institut für Informatikdidaktik bei:

Barbara Sabitzer (barbara@isys.uni-klu.ac.at) Tel.: 0463/2700-3517 bzw. 0660 4848651 oder
Stefan Pasterk (s2paster@edu.aau.at) Tel.: 0463/2700-3517 oder
Annette Lippitsch (annette@isys.uni-klu.ac.at) Tel.: 0463/2700-3504

Die Werkstatt bietet keine Ganztagesbetreuung; Kinder müssen von Erwachsenen begleitet werden.

infowerkstatt-pic2Schnupper-Workshops Informatik

  • 1 + 1 = 10
    Binärzahlen & Co
  • Bilder lernen laufen
    Pixel, Farben & Daumenkino
  • Top Secret
    Verschlüsselung und Codierung
  • Wie sag’ ich’s dem Computer?
    Wege beschreiben und Algorithmen
  • Gut geplant ist halb gewonnen
    Modellierung, Diagramme
  • Programmieren zum Begreifen
    z.B. Lego-Roboter
  • Computer zum Begreifen
    Hardware & Co
  • Alles logisch?!
    logische Verknüpfungen, Boolesche Algebra
  • Wer suchet der findet!
    Suchen und Sortieren
  • So ein Zustand
    Automaten und Zustandsdiagramme
  • Fleißige Bienen
    Bee bots und andere Roboter
  • Stille Post
    Nachrichtenübertragung & Netzwerke

infowerkstatt-pic3Ideenwerkstatt für LehrerInnen

  • Entwickeln von innovativen und kreativen Unterrichtseinheiten und –material für Informatik
  • Informatikkonzepte für fächerübergreifenden Unterricht, insbesondere Fremdsprachen und Deutsch
  • Informatikkonzepte in der Volksschule (z.B. Geheimsprache, Ordnen und Sortieren, Weg beschreiben, Wirklichkeit modellhaft darstellen, Handlungsabläufe darstellen und vieles mehr)

Jenseits von Produktlinien: Herausforderungen und Lösungen für variantenreiche Software-Ökosysteme

Klaus Schmid, Univ. Hildesheim - ACHTUNG Termin abgesagt!

30. 06. 2014,   15:00 Uhr,   Z.1.09



Während Softwareproduktlinien auf die Entwicklung von Softwarevarianten innerhalb einer Organisation zielen und einen längst etablierten Softwareentwicklungsansatz darstellen, wendet sich aktuell das Augenmerk verstärkt Software-Ökosystemen zu.
In diesem Entwicklungsmodell gibt es keine zentrale Koordination und die Eigenschaften des Systems werden erst zur Laufzeit beim Endanwender bestimmt.
Dies bringt eine Vielzahl neuer wissenschaftlicher und technischer Herausforderungen mit sich, die in diesem Vortrag dargestellt werden.
In meiner Arbeitsgruppe Software Systems Engineering an der Universität Hildesheim wurde ein Ansatz geschaffen, um die Entwicklung von Softwareproduktlinien und Software-Ökosystemen zu unterstützen. Grundlage dafür ist ein umfassender und flexibler Ansatz zur Unterstützung von Variabilität, sowie darauf aufbauend ein flexibler Ansatz zur effizienten Ableitung von Produktlinieninstanzen. Die Produktableitung wird dabei als (Modell-)transformations¬problem betrachtet.
In diesem Vortrag möchte ich insbesondere auf die besonderen Schwierigkeiten von Software-Ökosystemen eingehen, die über die üblichen Herausforderungen von Softwareproduktlinien hinausgehen. Hierzu zählen der Umgang mit Offenheit der Variation und als Konsequenz die Schwierigkeit die Vollständigkeit der Konfiguration und die Konsistenz und Vollständigkeit der Implementierung zu gewährleisten.

 

Die Vermessung des Codes – Über Softwaremetriken und Codequalität

Oliver Hummel, Univ. Mannheim

30. 06. 2014,   08:30 Uhr,   Z.1.09



Qualitativ mangelhafte Softwaresysteme wie jüngst die Steuerungssoftware der Boeing 747-8 geraten immer wieder in die Schlagzeilen. Wie weit Softwaremetriken bei der Erkennung solcher Probleme helfen können, ist noch weitgehend ungeklärt. In diesem Vortrag werde ich jüngste Forschungsergebnisse nach denen Refactorings Metrikmesswerte oftmals negativ beeinflussen, diskutieren und zeigen, wie Kombinationen von Metriken und Code-Analyse zur Erkennung von “Design-Smells“ verwendet werden können. Abschließend werde ich skizzieren, wie ich zukünftig die Abschätzung von Änderungsaufwänden mit Hilfe von Metriken verbessern möchte.

The Software Engineering Singularity: Can we remove the human from software engineering?

Gordon Fraser, Univ. of Sheffield, UK

01. 07. 2014,   08:30 Uhr,   Z.1.29



Research on automated software engineering aims to improve software development by automating tedious or error prone manual activities. We can now automatically produce tests, models, patches – and even software itself. But can we ultimately remove the human from software engineering, and is this even desirable? In this talk, I exemplify in the domain of automated software testing that software engineering depends on human software engineers, and discuss implications this has on automation research. Automated techniques need to be developed for software engineers, not to replace them. We can, however, utilise both, explicit and implicit human intelligence, to take automated software engineering to the next level.

The Knowledgeable Software Engineer

Martin Pinzger, AAU Klagenfurt

30. 06. 2014,   11:00 Uhr,   Z.1.09



Software systems, like many other systems, need to change in order to stay successful on the market. As has been described by Lehman’s Laws of Software Evolution, these changes cause software systems to become larger in size and more complex. As a consequence, more resources are needed to maintain, or in general, evolve a software system. Evolving software systems is therefore mastering change and system complexity. In this presentation, I show how the various data recorded for software projects can be used to identify critical parts of a software system and to help steering the evolution of software systems. Furthermore, I show how visualization techniques can be used to help software engineers to comprehend the implementation of large, complex software systems including large spreadsheets.

Cyberphysical Systems – The Next Big Challenge in Software Engineering

Raimund Kirner, Univ. of Hertfordshire, UK

01. 07. 2015,   11:00 Uhr,   Z.1.29



Cyperphysical systems (CPS) are on the horizon to challenge the way we see and develop computer systems. CPS provide the integration of embedded computing, real-time computing, distributed computing, parallel computing, mobile computing, and server systems, resulting in completely new application domains. On one side the arise of CPS is just the natural consequence of various incremental improvements of enabling technologies. But from the software engineering side it creates big challenges for software engineering. CPS will result in significant rise of system complexities. At the same time there are serious security and safety challenges as it requires to combine subsystems with closed-world assumptions and those with open-world assumptions, requiring new interfacing solutions. In this talk we present the research towards the development of a programming model that is aimed to withstand the CPS challenge. This programming model will provide support for mixed-criticality systems and adaptability. As a fundamental change in software engineering we present a computing model that unifies the non-real time, soft-real time and hard real-time paradigms. An important mechanism included in this computing model are tolerance ranges, which allow to adapt the system when necessary. Such adaptation scenarios include fault-tolerance with reconfiguration and optimisation of resources like processing time or power consumption.

Adaptive Media Streaming – State Of The Art and Future Challenges



ct2013octAss.-Prof. Dipl.-Ing. Dr. Christian Timmerer | Mi, 25.06.2014 | 17:00-18:30, HS 2

Abstract: Adaptive media streaming has entered our daily lives and we see large-scale deployments within heterogeneous environments. State of the art techniques adopt a client-centric, pull-based approach which is deployed over the top of the existing delivery infrastructure. Interestingly, this kind of approach turns out to be very efficient and scales very well thanks to efficient audio-visual coding formats, adaptive client behavior, and re-use of already deployed infrastructure such as servers, proxies, caches, and content distribution networks (CDNs). This talk will review past and present adaptive media streaming approaches and present dynamic adaptive streaming over HTTP (DASH) in detail. At the end of the talk we will present and discuss future challenges in this domain.

This talk is part of / dieser Vortrag ist Teil der Ringvorlesung Informatik und Informationstechnik SS2014.

Video analysis and recognition for Medical and Healthcare application

Prof. Jenny Benois-Pineau, University Bordeaux, France

24. 06. 2014,   10:00 Uhr,   E.2.69



JennySummary :

Since recent decade, the development of high quality acquisition devices for medical applications yielded migration of traditional video analysis techniques into medical domain. One of the fondamental probelms in Video analysis is motion estimation. Amongst the approaches which have been developped for this purpose, the robust motion estimators are of special interest. Initiated in the works by Black and Anondan, they are now more and more penetrating in the medical imaging and analysis. In the first part of the talk we will present a robust motion estimator from primary optical flow. Developed on the basis of robust estimator of Tukey, it allows for compensation of global motion in a video sequence.  The coherence of motion parameters allow for segmenting of video sequences for the primary  video summarisation. The results will be demonstrated on endoscopic videos. In the second part of the seminar we will be interested in primarily optical flow estimation on MRI sequences of beating heart. Here the motion compensation will be presented for MRI – guided thermotherapy, where precise motion compensation is needed for correction of temperature maps. Finally, we will give some insights in modelling of visual attention for wearable video acquisition set-ups in the studies of Instrulmental Activities of Daily living  of people with dementia for egocentric scenes interpretation.

CV :

Jenny Benois-Pineau is a distinguished professor of Computer science at the University Bordeaux, France and chair of Video Analysis and Indexing research group in Image and Sound Department of LABRI UMR 58000. She is also a deputy scientific director of theme B of French national research unity GDR CNRS ISIS. Her topics of interest include image and video analysis and indexing, motion analysis, content description and machine learning. She is the author and co-author of more than 120 papers in international journals, conference proceedings, book chapters. She has tutored an co-tutored 20 PhD students and 19 research masters. She is associated editor of EURASIP Signal Processing:Image Communication, Elsevier, Multimedia Tools and applications, Springer, She has served in numerous program committees in international conferences and workshops: ACM MM, CIVR, CBMI, AMR, IPTA, SAMT, ECMCS…
She has served as expert for European Commission since FP4 and she is a member of Multimedia Commission of French Ministry of National Education. She has been coordinator or leading researcher in international research projects Platon, Balaton, IP XMedia, Dem@care, French representative in COST292 European action, national research projects ANR and numerous projects with French industrial companies. She gave invited lectures at the universities of Sussex (GB), UPC, UAM (Spain), UNAM (Mexico), UNC at Chapel Hill, CMU, NJIT, Brooklynn Polytechnic (USA), Firenze (Italy), Vesprem (Hungary).