Publikationen

Hier finden Sie von Know-Center MitarbeiterInnen verfasste wissenschaftliche Publikationen

2007

Rath Andreas S.

A Low-Level Based Task and Process Support Approach For Knowledge-Intensive Business Environments

In Proceedings of the 5th International Conference on Enterprise Information System Doctoral Consortium (DCEIS 2007), Funchal, Portugal, Funchal, 2007

Konferenz
2007

Sabol Vedran, Gütl Christian, Neidhart T., Juffinger A., Klieber Hans-Werner, Granitzer Michael

Visualization Metaphors for Multi-modal Meeting

Workshop Multimedia Semantics - The Role of Metadata (WMSRM 07), Proceedings Band "Aachener Informatik Berichte", Aachen, 2007

Konferenz
The MISTRAL system, a service oriented architecture for semanticextraction of multimedia data from meeting recordings is described shortly. Itimproves on other similar systems by extracting a variety of semantic metadatafrom one media type and integrating it with concepts derived from other mediatypes, as well as by adding inference capabilities to resolve ambiguities and furtherenrich extracted data. On top of this state-of-the-art extraction functionality anumber of semantic-based, cross-modal visual applications for exploration andretrieval of extraction results were developed. Three selected applications,implemented upon the MISTRAL’s semantic application architecture, arepresented and described into detail in this paper.
2007

Scheir Peter, Granitzer Michael, Lindstaedt Stefanie

Evaluating an Information Retrieval System for the Semantic Desktop using Standard Measures from Information Retrieval

Lernen - Wissen - Adaption LWA 2007, 2007

Konferenz
Evaluation of information retrieval systems is a critical aspect of information retrieval research. New retrieval paradigms, as retrieval in the Semantic Web, present an additional challenge for system evaluation as no off-the-shelf test corpora for evaluation exist. This paper describes the approach taken to evaluate an information retrieval system built for the Semantic Desktop and demonstrates how standard measures from information retrieval research are employed for evaluation.
2007

Schachner W.

KnowFlow - Optimierung betrieblicher Informationsversorgung in KMUs

Proccedings of the 4th Conference on Professional Knowledge Management WM2007, ProKW2007 Productive Knowledge Work: Management and Technological Challenges, GITO-Verlag, Berlin, 2007

Konferenz
2007

Scharl A., Weichselbraun A., Hubmann-Haidvogel A., Stern Hermann, Wohlgenannt G., Zibold D.

Media Watch on Climate Change: Building and Visualizing Contextualized Information Spaces

6th International Semantic Web Conference (ISWC-2007), Semantic Web Challenge 2007, 2007

Konferenz
2007

Weichselbraun A., Wohlgenannt G., Scharl A., Granitzer Michael, Neidhart T., Juffinger A.

Applying Vector Space Models to Ontology Link Type Suggestion

Proceedings of 4th IEEE International Conference on Innovations in Information Technology, Dubai, 2007, 2007

Konferenz
2007

Us Saeed A., Stocker A., Höfler Patrick

Learning with the Web 2.0: The Encyclopedia of Life

Proceedings of ICL (Conference on interactive computer aided learning), 2007

Konferenz
2007

Dösinger G., Maurer Lisa

How users behave in a combined community/content environment

Proceedings of ICL 2007, Villach, Austria, 26.-28. September 2007, 2007

Konferenz
2007

Granitzer Michael, Scharl A., Weichselbraun A., Neidhart T., Wohlgenannt G.

Automated Ontology Learning and Validation using Hypothesis Testing

Proceedings of the Atlantic Web Intelligence Conference AWIC 200, Advances in Soft Computing, Springer, 2007

Konferenz
2007

Strohmaier M., Yu E., Horkoff J., Aranda J., Easterbrook S.

Analyzing Knowledge Transfer Effectiveness - An Agent-Oriented Approach

n Proceedings of the 40th Hawaii International Conference on System Sciences (HICSS-40 2007), January 3-9, IEEE Computer Society, Hawaii, USA, 2007., 2007

Konferenz
Facilitating the transfer of knowledge between knowledge workers represents one of the main challenges of knowledge management. Knowledge transfer instruments, such as the experience factory concept, represent means for facilitating knowledge transfer in organizations. As past research has shown, effectiveness of knowledge transfer instruments strongly depends on their situational context, on the stakeholders involved in knowledge transfer, and on their acceptance, motivation and goals. In this paper, we introduce an agent-oriented modeling approach for analyzing the effectiveness of knowledge transfer instruments in the light of (potentially conflicting) stakeholders ’ goals. We apply this intentional approach to the experience factory concept and analyze under which conditions it can fail, and how adaptations to the Experience Factory can be explored in a structured way.
2007

Beham Günter, Lux M., Dösinger G.

Empirical Studies in Multimedia Retrieval Evaluation

Proceedings of the 6th Workshop of the Multimedia Metadata Community: The Role of Metadata, March 2007, Aachen, Germany, 2007

Konferenz
The evaluation of retrieval mechanisms for inter-method comparison is necessary in academic as well as in applied research. A major issue in every evaluation is in which way and to what extent the actual perception of the user from the target user group is integrated. Within multimedia retrieval systems the impressions and perceptions of users vary much more than in text retrieval. Empirical studies are a common tool in social science and offer a way to research the correlation between the user perception and the computed similarity between pairs of multimedia documents or a query and the set of results. This approach can be used to complement and extend current evaluation approaches. Within this contribution we summarize general methods from social science and psychology for the interested reader in the area of computer science with some knowledge about statistics. Furthermore we give two examples of undertaken empirical experiments and their outcomes. Within the first one the perception of users is investigated and compared to factors like background and gender, while in the second study metrics are tested upon their ability to reflect the notion of similarity of users. Both experiments aim to give examples and insight on how empirical studies can be used in multimedia research in general and multimedia retrieval evaluation in special.
2007

Dösinger G.

Wissensmanagement in unterschiedlichen Altersgruppen - Kultur des Austauschs

e-commerce magazin 07/2007, WIN-Verlag GmbH, 2007

Konferenz
2007

Lux M., Granitzer Michael, Kern Roman

Some Aspects of Broad Folksonomies

TIR 07 Text Information Retrieval Workshop Procceedings of 18th International Conference on Database and Expert Systems Applications (DEXA 07), IEEE Computer Society, Regensburg, Germany, 2007

Konferenz
2007

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

APOSDLE: learn@work with semantic web technology

Proceedings of I-MEDIA 2007 and I-SEMANTICS 2007, Graz, Austria, September 5-7, 2007, 2007

Konferenz
The EU project APOSDLE focuses on work-integrated learning. Among the severalchallenges of the project, a crucial role is played by the system’s ability to start from the context ofthe immediate work of a user, establish her missing competencies and learning needs and suggeston-the-fly and appropriate learning stimuli. These learning stimuli are created from a variety ofresources (documents, videos, expert profiles, and so on) already stored in the workplace andmay be in the form of learning material or suggestions to contact experts and / or colleagues.To address this challenge requires the capability of building a system which is able find, choose,share, and combine a variety of knowledge, evolving content and resources in an automatic andeffective manner. The implementation of this capability requires technology which goes beyondtraditional query-answering and keyword based search engines, and Semantic Web technologywas chosen by the consortium as the most appropriate technology to make information search anddata integration more efficient. The aim of this paper is to give an overview of the broad spectrumof Semantic Web technologies that are needed for a complex application like APOSDLE, and thechallenges for the Semantic Web community that have appeared along the way.
2007

Zechner Mario, Kienreich Wolfgang

Scalable Realtime Glyph Rendering on Consumer Level Graphics Hardware: A Hybrid Approach

Proceedings of VIIP07 - 7th IASTED Conference on Visualization, Imaging and Image Processing, ACTA Press, Palma de Mallorca, Spain, 2007

Konferenz
2007

Rath Andreas S., Kröll Mark, Lindstaedt Stefanie , Granitzer Michael

Low-Level Event Relationship Discovery for Knowledge Work Support

Proccedings of the 4th Conference on Professional Knowledge Management WM2007, ProKW2007, 28. - 30. März 2007, Potsdam, Germany, Gronau, N., GITO-Verlag, Berlin, 2007

Konferenz
2007

Bonestroo W., Ley Tobias, Kump Barbara, Lindstaedt Stefanie

Learn@Work: Competency Advancement with Learning Templates

Martin Memmel, Eric Ras, Martin Wolpers, and Frans Van Assche (Eds.), Proceedings of the 3rd Workshop on Learner-Oriented Knowledge Management, RWTH, Aaachen, 2007

Konferenz
2007

Lex Elisabeth, Kienreich Wolfgang

Introducing a general purpose visual formalism based on procedurally generated geometry

Proceedings of 2nd ISGI 2007 International Codata Symposium on Generalization of Information, Geneva (Carouge), Switzerland, 2007

Konferenz
2007

Scheir Peter, Pammer-Schindler Viktoria, Lindstaedt Stefanie

Information Retrieval on the Semantic Web - Does it exist?

Proceedings of Lernen-Wissen-Adaption, Halle/Saale, Germany, September 24-26, 2007, 2007

Konferenz
Plenty of contemporary attempts to search existthat are associated with the area of Semantic Web.But which of them qualify as information retrievalfor the Semantic Web? Do such approaches exist?To answer these questions we take a look at thenature of the Semantic Web and Semantic Desktopand at definitions for information and data retrieval.We survey current approaches referred toby their authors as information retrieval for the SemanticWeb or that use Semantic Web technologyfor search.
2007

Scheir Peter, Ghidini C., Lindstaedt Stefanie

Improving Search on the Semantic Desktop using Associative Retrieval Techniques

Proceedings of I-MEDIA 2007 and I-SEMANTICS 2007, Graz, Austria, September 5-7, 2007, 2007

Konferenz
While it is agreed that semantic enrichment of resources would lead tobetter search results, at present the low coverage of resources on the web with semanticinformation presents a major hurdle in realizing the vision of search on the SemanticWeb. To address this problem we investigate how to improve retrieval performancein a setting where resources are sparsely annotated with semantic information. Wesuggest employing techniques from associative information retrieval to find relevantmaterial, which was not originally annotated with the concepts used in a query. Wepresent an associative retrieval system for the Semantic Desktop and show how the useof associative retrieval increased retrieval performance.
2007

Strohmaier M., Lux M., Granitzer Michael, Scheir Peter, Liaskos S., Yu E.

How Do Users Express Goals on the Web? - An Exploration of Intentional Structures in Web Search

We Know 07 International Workshop on Collaborative Knowledge Management for Web Information Systems, in conjunction with WISE 07, , Nancy, France, 2007

Konferenz
2007

Sabol Vedran, Granitzer Michael, Kienreich Wolfgang

Fused Exploration of Temporal Developments and Topical Relationships in Heterogeneous Data Sets

3rd International Symposium of Knowledge and Argument Visualization. Proceedings of IV07, 11th International Conference Information Visualisation, IEEE Computer Society, London, UK, 2007

Konferenz
2007

Scheir Peter, Granitzer Michael, Lindstaedt Stefanie

Evaluation of an Information Retrieval System for the Semantic Desktop using Standard Measures from Information Retrieval

Proceedings of Lernen-Wissen-Adaption, Halle/Saale, Germany, September 24-26, 2007, 2007

Konferenz
2007

Juffinger A., Neidhart T., Granitzer Michael, Kern Roman, Weichselbraun A., Wohlgenannt G., Scharl A.

Distributed Web2.0 Crawling for Ontology Evolution

Proc.of 2nd IEEE International Conference on Digital Information Management, Lyon, 2007, 2007

Konferenz
2007

Kienreich Wolfgang, Zechner Mario, Sabol Vedran

Comprehensive Astronomical Visualization for a Multimedia Encyclopedia

3rd International Symposium of Knowledge and Argument Visualization. Proceedings of IV07, 11th International Conference Information Visualisation, IEEE Computer Society, London, UK, 2007

Konferenz
2007

Lindstaedt Stefanie , Scheir Peter, Ulbrich Armin

Scruffy Technologies to Enable (Work-integrated) Learning

EC-TEL, 2007

Konferenz
The goal of the APOSDLE (Advanced Process-Oriented SelfDirectedLearning environment) project is to support work-integrated learningof knowledge workers. We argue that work-integrated learning requires extremeflexibility on a variety of aspects from supportive learning systems. Thisflexibility can not be achieved by typical (neat) eLearning systems. In this contributionwe present how a battery of scruffy technologies (e.g. combining semantics,associative networks and collective intelligence approaches) can beutilized to achieve this flexibility for user profile maintenance and contextbasedretrieval.
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