Publikationen

Hier finden Sie von Know-Center MitarbeiterInnen verfasste wissenschaftliche Publikationen

2008

Ghidini C., Rospocher M., Serafini L., Faatz A., Kump Barbara, Ley Tobias, Pammer-Schindler Viktoria, Lindstaedt Stefanie

Collaborative enterprise integrated modelling

Poster Session at the 16th International Conference on Knowledge Engineering and Knowledge Management Knowledge Patterns (EKAW 2008), 29th September-3rd October 2008 - Acitrezza, Catania, Italy, 2008

Konferenz
Enterprise modelling focuses on the construction of structured descriptions,the enterprise models, of sets of aspects relevant to the activity ofan enterprise. Nowadays, knowledge engineering provides powerful methodologiesand tools to support enterprise modeling in the production of formal models.These methods however present two main limitation: First, they are based ona waterfall process of transformation of informal knowledge into formal statements;Second, they tend to separate the modelling of the different aspects withoutproviding enough support to their final integration. In this paper we propose amore flexible framework that supports an agile collaboration between the actorsinvolved in the modelling activities, without sticking to a pre-defined protocolof interaction. In addition we propose an integrated meta-model that specifiesthe integration of single components of an articulated enterprise model as wellas their relations, and we report our experience of using the framework and themeta-model in the production of five enterprise models within the APOSDLEEU-project.
2008

Lindstaedt Stefanie , , , Lokaiczyk R., Kump Barbara, Beham Günter, Pammer-Schindler Viktoria

Knowledge Services for Work-integrated Learning

Proceedings of the European Conference on Technology Enhanced Learning (ECTEL) 2008, Maastricht, The Netherlands, September 16-19, Springer, 2008

Konferenz
In order to support work-integrated learning scenarios task- andcompetency-aware knowledge services are needed. In this paper we introducethree key knowledge services of the APOSDLE system and illustrate how theyinteract. The context determination daemon observes user interactions andinfers the current work task of the user. The user profile service uses theidentified work tasks to determine the competences of the user. And finally, theassociative retrieval service utilizes both the current work task and the inferredcompetences to identify relevant (learning) content. All of these knowledgeservices improve through user feedback.
2008

Pammer-Schindler Viktoria, Ley Tobias, Lindstaedt Stefanie

Tagr: Unterstützung in kollaborativen Tagging-Umgebungen durch semantische und assoziative Netzwerke

GMW Expert Workshop" Social Tagging in der Wissensorganisation–Perspektiven und Potenziale", Tübingen, 2008

Stellen Sie sich vor, Sie laden ein Bild auf Flickr hoch und bekommen automatisch Vorschläge für Tags, sowie Beispiele wie ähnliche Bilder beschlagwortet worden sind. Wir stellen den Forschungsprototypen tagr vor, der auf Basis von vorhandenen Tags Information über die Benutzerin sowie eine Analyse des Bildes neue Tags für ein Bild vorschlägt. Wir verstehen kollaboratives Tagging als einen Prozess der verteilten Kognition, den wir mit entsprechenden Diensten unterstützen wollen. Wir gehen in diesem Artikel genauer auf den Termähnlichkeitsservice ein, der sich ein semantisches Netzwerk (WordNet) und ein assoziatives Netzwerk (Kookkurrenz der verwendeten Tags) zu Nutze macht. Wir diskutieren die Evaluierung des Prototypen und schließen mit einem Ausblick auf unsere weiteren Arbeiten.
2008

Lindstaedt Stefanie , Ley Tobias, Scheir Peter, Ulbrich Armin

Aplicación de métodos" desaliñados" para facilitar el aprendizaje en el trabajo.(El futuro de la tecnología educativa)

Novática: Revista de la Asociación de Técnicos de Informática, 2008

2008

Lindstaedt Stefanie , Pammer-Schindler Viktoria, Mörzinger Roland, Kern Roman, Mülner Helmut, Wagner Claudia

Recommending tags for pictures based on text, visual content and user context

Third International Conference on Internet and Web Applications and Services (ICIW), IEEE, 2008

Konferenz
Imagine you are member of an online social systemand want to upload a picture into the community pool. In currentsocial software systems, you can probably tag your photo, shareit or send it to a photo printing service and multiple other stuff.The system creates around you a space full of pictures, otherinteresting content (descriptions, comments) and full of users aswell. The one thing current systems do not do, is understandwhat your pictures are about.We present here a collection of functionalities that make a stepin that direction when put together to be consumed by a tagrecommendation system for pictures. We use the data richnessinherent in social online environments for recommending tags byanalysing different aspects of the same data (text, visual contentand user context). We also give an assessment of the quality ofthus recommended tags.
2008

Ley Tobias, Ulbrich Armin, Lindstaedt Stefanie , Scheir Peter, Kump Barbara, Albert Dietrich

Modeling competencies for supporting work-integrated learning in knowledge work

Journal of knowledge management, Emerald Group Publishing Limited, 2008

Journal
Purpose – The purpose of this paper is to suggest a way to support work-integrated learning forknowledge work, which poses a great challenge for current research and practice.Design/methodology/approach – The authors first suggest a workplace learning context model, whichhas been derived by analyzing knowledge work and the knowledge sources used by knowledgeworkers. The authors then focus on the part of the context that specifies competencies by applying thecompetence performance approach, a formal framework developed in cognitive psychology. From theformal framework, a methodology is then derived of how to model competence and performance in theworkplace. The methodology is tested in a case study for the learning domain of requirementsengineering.Findings – The Workplace Learning Context Model specifies an integrative view on knowledge workers’work environment by connecting learning, work and knowledge spaces. The competence performanceapproach suggests that human competencies be formalized with a strong connection to workplaceperformance (i.e. the tasks performed by the knowledge worker). As a result, competency diagnosisand competency gap analysis can be embedded into the normal working tasks and learninginterventions can be offered accordingly. The results of the case study indicate that experts weregenerally in moderate to high agreement when assigning competencies to tasks.Research limitations/implications – The model needs to be evaluated with regard to the learningoutcomes in order to test whether the learning interventions offered benefit the user. Also, the validityand efficiency of competency diagnosis need to be compared to other standard practices incompetency management.Practical implications – Use of competence performance structures within organizational settings hasthe potential to more closely relate the diagnosis of competency needs to actual work tasks, and toembed it into work processes.Originality/value – The paper connects the latest research in cognitive psychology and in thebehavioural sciences with a formal approach that makes it appropriate for integration intotechnology-enhanced learning environments.Keywords Competences, Learning, Workplace learning, Knowledge managementPaper type Research paper
2008

Granitzer Michael, Granitzer Gisela, Lindstaedt Stefanie , Rath Andreas S., Groiss W.

Automating Knowledge Transfer and Creation in Knowledge Intensive Business Processes

Proceedings of the First Workshop on Business Process Management and Social Software BPMS2 08, September 1, 2008, Mailand, Italien, Springer, 2008

It is a well known fact that a wealth of knowledge lies in thehead of employees making them one of the most or even the most valuableasset of organisations. But often this knowledge is not documented andorganised in knowledge systems as required by the organisation, butinformally shared. Of course this is against the organisation’s aim forkeeping knowledge reusable as well as easily and permanently availableindependent of individual knowledge workers.In this contribution we suggest a solution which captures the collectiveknowledge to the benefit of the organisation and the knowledge worker.By automatically identifying activity patterns and aggregating them totasks as well as by assigning resources to these tasks, our proposed solutionfulfils the organisation’s need for documentation and structuring ofknowledge work. On the other hand it fulfils the the knowledge worker’sneed for relevant, currently needed knowledge, by automatically miningthe entire corporate knowledge base and providing relevant, contextdependent information based on his/her current task.
2008

Thurner-Scheuerer Claudia, Lindstaedt Stefanie

Web-gestütztes Social Networking am Beispiel der Plattform Wissensmanagement

Social Semantic Web, Blumauer, A., Pellegrini, T., Springer, 2008

Buch
Anhand der Plattform Wissensmanagement, der größtendeutschsprachigen Community im Themenfeld Wissensmanagement, werden organisationaleRahmenbedingungen, technische Werkzeuge und Rollen der Moderatorindiskutiert, die Bedingungen für den erfolgreichen Betrieb einer Communityim Web 2.0 sind. Weiters wird dargestellt, wie Communities für das betrieblicheWissensmanagement eingesetzt werden können.
2008

Jones S., Lynch P., Maiden N., Lindstaedt Stefanie

Use and Influence of Creative Ideas and Requirements for a Work-Integrated Learning System

proceedings of the RE08, 16th International Requirements Engineering Conference, Barcelona, Catalunya, Spain, September 8-12, IEEE Computer Society Press, 2008

Konferenz
In this paper, we describe a creativity workshop thatwas used in a large research project, called APOSDLE,to generate creative ideas and requirements for a workintegratedlearning system. We present an analysis ofempirical data collected during and after the workshop.On the basis of this analysis, we conclude that the workshopwas an efficient way of generating ideas for futuresystem development. These ideas, on average, were usedat least as much as requirements from other sources inwriting use cases, and 18 months after the workshop wereseen to have a similar degree of influence on the projectto other requirements. We make some observations aboutthe use of more and less creative ideas, and about thetechniques used to generate them. We end with suggestionsfor further work.
2008

Pammer-Schindler Viktoria, Ley Tobias, Lindstaedt Stefanie

tagr: Unterstützung in kollaborativen Tagging-Umgebungen durch Semantische und Assoziative Netzwerke

Good Tags Bad Tags - Social Tagging in der Wissensorganisation, Gaiser, B., Hampel, T., Panke, S., Waxmann Verlag, 2008

Buch
2008

Ley Tobias, Ulbrich Armin, Scheir Peter, Lindstaedt Stefanie , Kump Barbara, Albert D.

Modelling Competencies for Supporting Work-integrated Learning in Knowledge Work

Journal of Knowledge Management, , 2008

Journal
2008

Ulbrich Armin, Höfler Patrick, Lindstaedt Stefanie

Modellierung von Anwenderverhalten im Social Semantic Web

Social Semantic Web. Web 2.0 - Was nun?, Blumauer, A., Pellegrini, T., Springer, 2008

Buch
Ziel dieses Kapitels ist es, gemeinsame Verwendungsszenariendes Semantic Web und des Social Web zu identifizieren und zu benennen.Dabei wird ein Teilaspekt des Themengebiets im Detail betrachtet: die Nutzungvon Services, die Beobachtungen des Verhaltens von Anwendern analysieren, umdaraus maschinell interpretierbare Informationen zu erhalten und diese als Modellezu organisieren. Es werden zunächst einige Eigenschaften und Unterscheidungsmerkmalevon Anwenderverhalten und organisierten Modellen dargestellt.Anschließend wird der mögliche wechselseitige Nutzen von Anwenderverhaltenund Modellen diskutiert. Den Abschluss bildet eine Betrachtung einiger exemplarischerSoftware-Services, die heute schon verwendet werden, um Anwenderverhaltenin Modelle überzuführen.
2008

Christl C., Ghidini C. , Guss J., Lindstaedt Stefanie , Pammer-Schindler Viktoria, Scheir Peter, Serafini L.

Deploying semantic web technologies for work integrated learning in industry. A comparison: SME vs. large sized company

Proceedings of the ISWC 2008, 7th International Semantic Web Conference, Karlsruhe, Germany, Oct 26-30, 2008 , Springer, 2008

Konferenz
Modern businesses operate in a rapidly changing environment.Continuous learning is an essential ingredient in order to stay competitivein such environments. The APOSDLE system utilizes semanticweb technologies to create a generic system for supporting knowledgeworkers in different domains to learnwork. Since APOSDLE relies onthree interconnected semantic models to achieve this goal, the questionon how to efficiently create high-quality semantic models has become oneof the major research challenges. On the basis of two concrete examplesnamelydeployment of such a learning system at EADS, a large corporation,and deployment at ISN, a network of SMEs-we report in detail theissues a company has to face, when it wants to deploy a modern learningenvironment relying on semantic web technology.
2008

Ley Tobias, Kump Barbara, Ulbrich Armin, Scheir Peter, Lindstaedt Stefanie

A Competence-based Approach for Formalizing Learning Goals in Work-integrated Learning

Proceedings of the ED-Media 2008, Vienna, Austria, June 30-July 4, 2008,, Chesapeake, VA: AACE, 2008

Konferenz
The paper suggests a way to support work-integrated learning for knowledge workwhich poses a great challenge for current research and practice. We first present a WorkplaceLearning Context Model which has been derived by analyzing knowledge work and the knowledgesources used by knowledge workers. The model specifies an integrative view on knowledgeworkers’ work environment by connecting learning, work and knowledge spaces. We then focuson the part of the context which specifies learning goals and their interrelations to task and domainmodels. Our purpose is to support learning needs analysis which is based on a comparison of tasksperformed in the past to those tasks to be tackled in the future. A first implementation in theAPOSDLE project is presented including the models generated for five real world applications andthe software prototype. We close with an outlook on future work.
2008

Zinnen A., Hambach S., Faatz A., Lindstaedt Stefanie , Beham Günter, Godehardt E., Goertz M., Lokaiczyk R.

Datenschutzfragen bei der Etablierung einer Arbeitsprozess-integrierten e-Learning-Lösung

Gesellschaft für Informatik (GI): DeLFI 2008 : Die 6. e-Learning Fachtagung Informatik der Gesellschaft für Informatik e.V.Bonn : Köllen, 2008, Seehusen, S., Gesellschaft für Informatink eV, 2008

Konferenz
2008

Rath Andreas S., Weber Nicolas, Kröll Mark, Granitzer Michael, Dietzel O., Lindstaedt Stefanie

Context-Aware Knowledge Services

Workshop on Personal Information Management (PIM2008) at the 26th Computer Human Interaction Conference (CHI2008), Florence, Italy, 2008

Konferenz
Improving the productivity of knowledge workers is anopen research challenge. Our approach is based onproviding a large variety of knowledge services which takethe current work task and information need (work context)of the knowledge worker into account. In the following wepresent the DYONIPOS application which strives toautomatically identify a user’s work task and thencontextualizes different types of knowledge servicesaccordingly. These knowledge services then provideinformation (documents, people, locations) both from theuser’s personal as well as from the organizationalenvironment. The utility and functionality is illustratedalong a real world application scenario at the Ministry ofFinance in Austria.
2008

Schmidt A., Hinkelmann K., Lindstaedt Stefanie , Ley Tobias, Maier R., Riss U.

Conceptual Foundations for a Service-Oriented Knowledge and Learning Architecture: Supporting Content, Process, and Ontology Maturing

Proceedings of I-Know 08 and I-Media 08, Graz, Austria, September 3-5, 2008, 2008

Konferenz
2008

Ghidini C., Rospocher M., Serafini L., Kump Barbara, Pammer-Schindler Viktoria, Faatz A., Zinnen A., Guss J., Lindstaedt Stefanie

Collaborative Knowledge Engineering via Semantic MediaWiki

Proceedings of the I-Semantics 2008, Graz, Austria, Sep. 3-5 2008, 2008

Konferenz
Formal modelling is a challenging and expensive task, especially for people not familiarwith design techniques and formal languages. In this paper we present the modelling experiencewithin the APOSDLE EU-project, and we describe the methodology we have developedto support an integrated modelling process of the ontologies and workflows inside APOSDLE.Our approach is based on two main pillars: (i) the usage of Semantic MediaWiki (SMW) forthe collaborative development of informal models to be created, and (ii) a tight, and as much aspossible automatic, integration of the SMW with tools for formal modelling, in order to reuse theinformal models for formal models creation.
2008

Moerzinger R., Sorschag R., Thallinger G., Lindstaedt Stefanie

Automatic Image Annotation using Visual Content and Folksonomies

Proceedings of the Metadata Mining for Image Understanding Workshop at VISAPP2008 in Funchal, Portugal, 22-25 January 2008, 2008

Konferenz
Automatic image annotation is an important and challengingtask when managing large image collections. This paper describestechniques for automatic image annotation by taking advantage of collaborativelyannotated image databases, so called visual folksonomies.Our approach applies two techniques based on image analysis: Classificationannotates images with a controlled vocabulary while tag propagationuses user generated, folksonomic annotations and is thereforecapable of dealing with an unlimited vocabulary. Experiments with apool of Flickr images demonstrate the high accuracy and efficiency ofthe proposed methods in the task of automatic image annotation.
2008

Lindstaedt Stefanie , Ley Tobias, Scheir Peter, Ulbrich Armin

Applying Scruffy Methods to Enable Work-integrated Learning

The European Journal of the Informatics Professional, 2008

Journal
This contribution introduces the concept of work-integrated learning which distinguishes itself from traditional e-Learning in that it provides learning support (i) during work task execution and tightly contextualized to the work context,(ii) within the work environment, and (iii) utilizes knowledge artefacts available within the organizational memory for learning. We argue that in order to achieve this highly flexible learning support we need to turn to" scruffy" methods (such as associative retrieval, genetic algorithms, Bayesian and other probabilistic methods) which can provide good results in the presence of uncertainty and the absence of fine-granular models. Hybrid approaches to user context determination, user profile management, and learning material identification are discussed and first results are reported.
2008

Lindstaedt Stefanie , Ley Tobias, Scheir Peter, Ulbrich Armin

Aplicación de métodos "desaliñados" para facilitar el aprendizaje integrado en el trabajo

Novatica, Revista de la Asociación de Téchnicos de Informática, N° 193, mayo-junio 2008, ano XXXIV, ATI, 2008

Journal
2008

Granitzer Michael, Kröll Mark, Seifer Christin, Rath Andreas S., Weber Nicolas, Dietzel O., Lindstaedt Stefanie

Analysis of Machine Learning Techniques for Context Extraction

Proceedings of 2008 International Conference on Digital Information Management (ICDIM08), IEEE Computer Society Press, 2008

Konferenz
’Context is key’ conveys the importance of capturing thedigital environment of a knowledge worker. Knowing theuser’s context offers various possibilities for support, likefor example enhancing information delivery or providingwork guidance. Hence, user interactions have to be aggregatedand mapped to predefined task categories. Withoutmachine learning tools, such an assignment has to be donemanually. The identification of suitable machine learningalgorithms is necessary in order to ensure accurate andtimely classification of the user’s context without inducingadditional workload.This paper provides a methodology for recording user interactionsand an analysis of supervised classification models,feature types and feature selection for automatically detectingthe current task and context of a user. Our analysisis based on a real world data set and shows the applicabilityof machine learning techniques.
2008

Aehnelt M., Ebert M., Beham Günter, Lindstaedt Stefanie , Paschen A.

A Socio-Technical Approach towards Supporting Intra-Organizational Collaboration

Proceedings of the European Conference on Technology Enhanced Learning (ECTEL) 2008, Maastricht, The Netherlands, September 16-19, Springer, 2008

Konferenz
Knowledge work in companies is increasingly carried out by teams of knowledge workers. They interact within and between teams with the common goal to acquire, apply, create and share knowledge. In this paper we propose a socio-technical model to support intra-organizational collaboration which specifically takes into account the social and collaborative nature of knowledge work. Our aim is to support in particular the efficiency of collaborative knowledge work processes through an automated recommendation of collaboration partners and collaboration media. We report on the theoretical as well as practical aspects of such a socio-technical model.
2008

Scheir Peter, Lindstaedt Stefanie , Ghidini C.

A Network Model Approach to Retrieval in the Semantic Web

International Journal on Semantic Web and Information Systems, Sheth, A., IGI Global, 2008

Journal
2008

Lindstaedt Stefanie , Jones S.

A Multi-Activity Distributed Participatory Design Process for Stimulating Creativity in the Specification of requirements for a Work-Integrated Learning System

Workshop on Distributed Participatory Designat the 26th Computer Human Interaction Conference (CHI2008), Florence, Italy, 2008

Konferenz
We describe the approach to distributed participatorydesign taken within the APOSDLE project. The processincluded instances of both synchronous andasynchronous, distributed and non-distributed designactivities, and also integrated activities designed tostimulate creative inputs to requirements. We reportkey lessons learned.
2008

de Hoog Robert, Kooken J.P,, Ley Tobias, Kump Barbara, Lindstaedt Stefanie

Second workplace learning study. Deliverable D2. 5, EU Project 027023 APOSDLE

Know Center, 2008

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