CiteSeerX — Author Search Results — "Stavros Christodoulakis"

Multimedia Object Modelling and Content-Based Querying
by Anastasia Analyti, Stavros Christodoulakis — 1995 — Querying, Proceedings of Advanced Course – Multimedia databases in Perspective
…Multimedia Database Systems (MMDS) support rich data types, such as text, images, video, and sound. Queries in MMDSs may refer to the content of the stored multimedia objects. This is called content-based querying. However, manual entry of content descriptions is very difficult and subjective.…
Cited by 5 (4 self) – Add To MetaCart

UTML: Unified Transaction Modeling Language
by Nektarios Gioldasis, Stavros Christodoulakis — 2002 — Proceedings of the Third International Conference on Web Information Systems Engineering (WISE’02), Grand
…Web transactions may be complex, composed of several sub-transactions accessing different resources including legacy systems. They may also have complex semantics. To deal with complex web applications, transaction design methodologies and tools need to be very flexible allowing for designing web ap…
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Ontology-Driven Semantic Ranking for Natural Language Disambiguation in the OntoNL Framework
by Anastasia Karanastasi, Stavros Christodoulakis
…Abstract. The measurement of the semantic relatedness has many applications in natural language processing, and many different measures have been proposed. Most of these measures use WordNet as their central resource and not domain ontologies of a particular context. We propose and evaluate a semant…
Cited by 1 (0 self) – Add To MetaCart

Content-Based Querying
by Anastasia Analyti , Stavros Christodoulakis — 1997
…Multimedia Database Systems (MMDS) support rich data types, such as text, images, video, and sound. Queries in MMDSs may refer to the content of the stored multimedia objects. This is called content-based querying. However, manual entry of content descriptions is very difficult and subjective. A bet…
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An ontology-driven framework for the management of semantic metadata describing audiovisual information
by Chrisa Tsinaraki, Eleni Fatourou, Stavros Christodoulakis — 2003 — In Proc. of CAiSE
…Abstract. In this paper, we describe a framework for the management of semantic metadata that describe audiovisual content. The main objectives of this work are to provide a framework allowing enhanced retrieval performance and better user interfaces for audiovisual data, based on extensions of the …
Cited by 11 (6 self) – Add To MetaCart

A Video Metadata Model supporting Personalization & Recommendation in Video-based Services
by Chrisa Tsinaraki, Chrisa Tsinaraki, Stratos Papadomanolakis, Stratos Papadomanolakis, Stavros Christodoulakis, Stavros Christodoulakis — 2001 — in Proc. of MDDE Workshop (in conjunction with RETIS
…In this paper, we propose a model for video metadata that supports video retrieval based on video content, video structure and/or video attributes. Our model supports video retrieval based on the relationships among videos and between videos and real world objects. This model is also appropriate for…
Cited by 5 (5 self) – Add To MetaCart

Ontology-based Semantic Indexing for MPEG-7 and TV-Anytime Audiovisual Content
by Chrisa Tsinaraki, Panagiotis Polydoros, Fotis Kazasis, Stavros Christodoulakis — 2005 — Audiovisual Content”, Special issue of Multimedia Tools and Applications Journal on Video Segmentation for Semantic Annotation and Transcoding, 2004
…In this paper, we describe a framework that we have developed for the support of ontology-based semantic indexing and retrieval of audiovisual content following the MPEG-7 and TV-Anytime standard specifications for metadata descriptions. Our work aims to provide a methodology to enhance the retrieva…
Cited by 6 (4 self) – Add To MetaCart

Supporting Interoperability in an Existing eLearning Platform using SCORM
by Polyxeni Arapi, Nektarios Moumoutzis, Stavros Christodoulakis — 2003 — In the proceedings of the 3rd IEEE International Conference on Advanced Learning Technologies (ICALT 2003
…The proliferation of interoperability e-learning specifications raises the need of extending existing e-learning platforms so that they can be used efficiently in a distributed environment where material producers, service providers and users (either learners or teachers) exchange information using …
Cited by 3 (0 self) – Add To MetaCart

Integration of OWL ontologies in MPEG-7 and TVAnytime compliant Semantic Indexing
by Chrisa Tsinaraki, Panagiotis Polydoros, Stavros Christodoulakis — 2004 — In Proceedings of the 16th International Conference on Advanced Information Systems Engineering
…Abstract. We describe a systematic methodology for extending the audiovisual content description standards (MPEG-7 and TV-Anytime) with domain-specific knowledge descriptions expressed in OWL. The domain-specific descriptions of the audiovisual content metadata are completely transparent to applicat…
Cited by 7 (3 self) – Add To MetaCart

Christodoulakis, “A Service Oriented Architecture for Managing Operational Strategies,” ICWS-Europe 2003
by Nektarios Gioldasis, Nektarios Moumoutzis, Fotis Kazasis, Stavros Christodoulakis — 2003
…Abstract. In this paper we present a case study where an e-business platform (OPERATIONS) has to be built in order to manage the operational strategies of a high volume coastal company. The platform is intended to support multiple operational scenarios that have to be executed when emergency situati…
Cited by 4 (0 self) – Add To MetaCart

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