Publikationen

Hier finden Sie von Know-Center MitarbeiterInnen verfasste wissenschaftliche Publikationen

2008

Granitzer Michael, Lux M., Spaniol M.

Multimedia Semantics - The Role of Metadata

Studies in Computational Intelligence , Vol. 101, Springer, Berlin, 2008

Buch
2008

Brunie L., Bailer Werner, Doeller M., Granitzer Michael, Klamma R., Kosch H., Lux M., Spaniol M.

Multimedia Metadata Standards

"Encyclopedia of Multimedia " 2nd edition, Springer, Berlin, 2008

Buch
2008

Strohmaier M., Prettenhofer P., Lux M.

Different Degrees of Explicitness in Intentional Artifacts - Studying User Goals in a Large Search Query Log

proceedings of CSKGOI 08 International Workshop on Commonsense Knowledge and Goal Oriented Interfaces, 2008

Konferenz
On the web, search engines represent a primary instrument through which users exercise their intent. Understanding the specific goals users express in search queries could improve our theoretical knowledge about strategies for search goal formulation and search behavior, and could equip search engine providers with better descriptions of users’ information needs. However, the degree to which goals are explicitly expressed in search queries can be suspected to exhibit considerable variety, which poses a series of challenges for researchers and search engine providers. This paper introduces a novel perspective on analyzing user goals in search query logs by proposing to study different degrees of intentional explicitness. To explore the implications of this perspective, we studied two different degrees of explicitness of user goals in the AOL search query log containing more than 20 million queries. Our results suggest that different degrees of intentional explicitness represent an orthogonal dimension to existing search query categories and that understanding these different degrees is essential for effective search. The overall contribution of this paper is the elaboration of a set of theoretical arguments and empirical evidence that makes a strong case for further studies of different degrees of intentional explicitness in search query logs.
2007

Lux M.

From Folksonomies to Ontologies: Employing Wisdom of the Crowds to Serve Learning Purposes

International Journal for Knowledge & Learning IJKL, 3(4), 2007, 2007

Journal
Is Web 2.0 just hype or just a buzzword, which might disappear in the near future? One way to find answers to these questions is to investigate the actual benefit of the Web 2.0 for real use cases. Within this contribution we study a very special aspect of the Web 2.0 ? the folksonomy ? and its use within self-directed learning. Guided by conceptual principles of emergent computing we point out methods, which might be able to let semantics emerge from folksonomies and discuss the effect of the results in self-directed learning.
2007

Lux M., Beham Günter, Dösinger G.

User-Centered Multimedia Retrieval Evaluation based on Empirical Research

Multimedia Semantics 2007– The Role of Metadata. Studies in Computational Intelligence., Springer, 2007

Journal
2007

Rollett H., Lux M., Strohmaier M., Dösinger G.

The Web 2.0 Way of Learning with Technologies

International Journal of Learning Technology, Vol. 3, Issue 1, 2007, Inderscience Publishers, 2007

Journal
While there is a lot of hype around various concepts associated with the term Web 2.0 in industry, little academic research has so far been conducted on the implications of this new approach for the domain of education. Much of what goes by the name of Web 2.0 can, in fact, be regarded as new kinds of learning technologies, and can be utilised as such. This paper explains the background of Web 2.0, investigates the implications for knowledge transfer in general, and then discusses its particular use in eLearning contexts with the help of short scenarios. The main challenge in the future will be to maintain essential Web 2.0 attributes, such as trust, openness, voluntariness and self-organisation, when applying Web 2.0 tools in institutional contexts.
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

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

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
2006

Lux M.

Suchen mithilfe semantischer Metadaten

WISU - Das Wirtschaftsstudium, 2006

Journal
2006

Lux M., Granitzer Michael

Retrieval basierend auf Semantischen Metadaten

Tagungsband der Multikonferenz Wirtschaftsinformatik 2006, Passau (D), 2006

Konferenz
2006

Lux M., Klieber Hans-Werner, Granitzer Michael

On the Complexity of Annotation with the High Level Metadata

Journal of Universal Knowledge Management, Graz, 2006

Journal
2006

Lux Mathias, Scheir Peter, Lindstaedt Stefanie , Granitzer Michael

Special Track on Advanced Semantic Technologies-Introduction

International Conference on Knowledge Management, 2006

Konferenz
2006

Granitzer Gisela, Neidhart T., Lux M.

Learning Term Spaces based on Visual Feedback

TAKMA Workshop Procceedings of 17th International Conference on Database and Expert Systems Applications (DEXA 06), IEEE Computer Society, Krakaw, Polen, 2006

Konferenz
2006

Kienreich Wolfgang, Granitzer Michael, Lux M.

Geospatial Anchoring of Encyclopedia Articles

Proceedings of IV06, 10th International Conference on Information Visualisation, London, England, 2006

Konferenz
2005

Kienreich Wolfgang, Sabol Vedran, Granitzer Michael, Klieber Hans-Werner, Lux M., Sarka W.

A Visual Query Interface for a Very Large Newspaper Article Repository

Procceedings of 16th International Conference on Database and Expert Systems Applications (DEXA 05), IEEE Computer Society, Copenhagen, Denmark, 2005

Konferenz
2005

Lux M., Granitzer Michael

Knowledge Discovery and Semantic Technologies

JUCS - Proceedings of I-Know 05, Graz, Austria, 2005

Konferenz
2005

Lux M., Granitzer Michael

Retrieval of MPEG-7 based Semantic Descriptions

BTW-Workshop „WebDB Meets IR“, Karlsruhe, 2005

Konferenz
2005

Kienreich Wolfgang, Granitzer Michael, Sabol Vedran, Klieber Hans-Werner, Lux M., Sarka W.

Visual Analysis of Search Results Obtained from Very Large Newspaper Article Repository

Proceedings of ISGI 2005, CODATA International Symposium on Generalization of Information, Berlin, Germany, 2005

Konferenz
2005

Lux M., Granitzer Michael

A Fast And Simple Path Index Based Retrieval Approach for Graph Based Semantic Descriptions

Fachberichte Informatik, Universität Koblenz, ISSN 1860-4471, Stein, B., zu Eißen, S. M., Koblenz, Germany, 2005

Konferenz
2004

Lux M., Granitzer Michael, Kienreich Wolfgang, Sabol Vedran, Klieber Hans-Werner, Sarka W.

Cross Media Retrieval in Knowledge Discovery

Lecture Notes in Computer Science, Springer, Vienna, Austria, 2004

Konferenz
2004

Bailer Werner, Mayer H., Neuschmied H., Haas W., Lux M., Klieber Hans-Werner

Content-based Video Retrieval and Summarization using MPEG-7

Proceedings of Electronic Imaging 2004, Internet Imaging V, San Jose, CA, USA, 2004

Konferenz
Retrieval in current multimedia databases is usually limited to browsing and searching based on low-level visual features and explicit textual descriptors. Semantic aspects of visual information are mainly described in full text attributes or mapped onto specialized, application specific description schemes. Result lists of queries are commonly represented by textual descriptions and single key frames. This approach is valid for text documents and images, but is often insufficient to represent video content in a meaningful way. In this paper we present a multimedia retrieval framework focusing on video objects, which fully relies on the MPEG-7 standard as information base. It provides a content-based retrieval interface which uses hierarchical content-based video summaries to allow for quick viewing and browsing through search results even on bandwidth limited Web applications. Additionally semantic meaning about video content can be annotated based on domain specific ontologies, enabling a more targeted search for content. Our experiences and results with these techniques will be discussed in this paper.
2004

Lux M., Klieber Hans-Werner, Granitzer Michael

Caliph & Emir: Semantics in Multimedia Retrieval and Annotation

19th CODATA Conference, Berlin, Berlin, 2004

Konferenz
2003

Lux M., Granitzer Michael, Sabol Vedran, Kienreich Wolfgang, Becker J.

Topic Cascades: An interactive interface for exploration of clustered web search results based on the SVG standard

In Proceedings of the Seventh International Conference on Knowledge-Based Intelligent Information, Springer, Oxford, England, 2003

Konferenz
2003

Klieber Hans-Werner, Lux M., Mayer H., Neuschmied H., Haas W.

IMB - Ein XML-basiertes Retrievalframework für digitales Audio und Video

Proceedings der Berliner XML-Tage, Berlin, Germany, 2003

Konferenz
2002

Becker J., Lux M., Klieber Hans-Werner, Sabol Vedran, Kienreich Wolfgang

Knowledge Discovery Space

to be Published in TELEMATIK 03/2002, Telematik Ingenieur Verband, Graz, Austria, 2002

Journal
2002

Becker J., Lux M., Klieber Hans-Werner

Intelligente Multimedia Bibliothek

to be Published in TELEMATIK 03/2002, Telematik Ingenieur Verband, Graz, Austria, 2002

Journal
2002

Lux M., Klieber Hans-Werner, Becker J., Mayer H., Neuschmied H., Haas W.

XML and MPEG-7 for Interactive Annotation and Retrieval Using Semantic Meta-data

IICM, JUCS online, Graz, Austria, 2002

Journal
The evolution of the Web is not only accompanied by an increasing diversity of multimedia but by new requirements towards intelligent research capabilities, user specific assistance, intuitive user interfaces and platform independent information presentation. To reach these and further upcoming requirements new standardized Web technologies and XML based description languages are used. The Web Information Space has transformed into a Knowledge marketplace where worldwide located participants take part into the creation, annotation and consumption of knowledge. This paper points out the design of semantic retrieval frameworks and a prototype implementation for audio and video annotation, storage and retrieval using the MPEG-7 standard and semantic web reference implementations. MPEG-7 plays an important role towards the standardized enrichment of multimedia with semantics on higher abstraction levels and a related improvement of query results.
2002

Lux M., Klieber Hans-Werner, Becker J., Mayer H., Neuschmied H., Haas W.

XML and MPEG-7 for Interactive Annotation and Retrieval Using Semantic Metadata

Journal of Computer Science (www.jucs.org), Springer-Verlag, 2002

Journal
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