The KYDONIA multimedia information server

Christodoulakis, Stavros; Pappas, Nikos; Kyriakaki, Giorgia; Maragoudakis, Ioannis; Mavraganis, Yiannis; Tsinaraki, Chrisa

doi:10.1007/bfb0037371

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…The network, CPS, and SPS can be the same organization, but they are generally different. DAVIC-based VoD systems have been developed, such as the one in [72], ARMIDATM [53], the NIST VoD system [46], KYDONIA [19], and the Broadband Interactive VoD system at Beijing Telecommunications.…”

Section: The Reference Model Of Vod Systemsmentioning

confidence: 99%

Multicast Video-on-Demand services

Shin

2002

SIGCOMM Comput. Commun. Rev.

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The server's storage I/O and network I/O bandwidths are the main bottleneck of VoD service. Multicast offers an efficient means of distributing a video program to multiple clients, thus greatly improving the VoD performance. However, there are many problems to overcome before development of multicast VoD systems. This paper critically evaluates and discusses the recent progress in developing multicast VoD systems. We first present the concept and architecture of multicest VoD, and then introduce the techniques used in multicast VoD systems. We also analyze and evaluate problems related to multicast VoD service. Finally, we present open issues on multicast VoD as possible future research directions.

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Section: The Reference Model Of Vod Systemsmentioning

confidence: 99%

Multicast Video-on-Demand services

Shin

2002

SIGCOMM Comput. Commun. Rev.

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“…We are witnessing the last few years increasing cooperation (and sometimes merging) of computer, home electronics, software, broadcasting and audiovisual information provision industries. Some of the more popular scenarios offered to users include digital audiovisual libraries [8], [11], [6], video on demand services [3] [16] [17] [19] and recently TV-Anytime services [15]. The simpler TV-Anytime scenario foresees that future TVs will be equipped with a processor and large, inexpensive disk storage devices that will be capable of selecting on a continuous basis broadcasted digital TV programs for the user to see on his spare time, according to his personal interests (profile).…”

Section: Introductionmentioning

confidence: 99%

An Ontology-Driven Framework for the Management of Semantic Metadata Describing Audiovisual Information

Tsinaraki

Fatourou

Christodoulakis

2003

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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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 well accepted international standards for the digital media, digital broadcasting and TV-Anytime domains like TV-Anytime and MPEG-7, as well as to provide an interoperability framework between TV-Anytime and MPEG-7 for the rapidly expanding set of interoperating digital library and interactive TV applications. The framework was developed in the context of the UP-TV project, which investigates TV-Anytime architectures and services. Our approach is ontologydriven, in the sense that we provide ontology based domain-specific extensions of the standards for describing multimedia content. Several aspects of the framework are based on the existence of ontologies. Our framework allows the creation of more efficient user interfaces for accessing content, better retrieval performance and better support in the indexing phase. It also provides compatibility in indexing between the two standards and interoperability for TV-Anytime and digital library applications supported by TV-Anytime servers. We have developed a domain-specific ontology (football games) to test our framework ideas and implementation. The developed ontology uses as primitive modelling elements those provided by the MPEG-7 metadata model. The mapping of the ontology to TV-Anytime metadata primitives is straightforward. We show in detail the concrete implementation of the framework on top of relational databases and its interfaces with the other system components.

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“…Section 2 describes the benchmark model. In Section 3 we show how we used the model to fine-tune the performance of the KYDONIA multimedia server ( [5]). The corresponding results are described and analyzed in the same section.…”

Section: Introductionmentioning

confidence: 99%

Benchmarking and performance tuning of multimedia servers

Triantafillou

Christodoulakis

Magoulioti

1997

Euro-Par'97 Parallel Processing

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In this paper we study the issues related to the development of a multimedia server benchmark. Multimedia benchmarks can be used to compare the performance of existing multimedia servers and to fine-tune the performance of servers under development. The modeling of multimedia servers includes the modeling of databases, multi-user workloads, user behavior, and the definition of the relevant performance metrics. The proposed benchmark has been implemented and has been used to fine-tune the performance of a multimedia server, called KY-DONIA. We present the results of testing KYDONIA and representative instances of fine-tuning KYDONIA's performance.

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The KYDONIA multimedia information server

Cited by 7 publications

References 3 publications

Multicast Video-on-Demand services

Multicast Video-on-Demand services

An Ontology-Driven Framework for the Management of Semantic Metadata Describing Audiovisual Information

Benchmarking and performance tuning of multimedia servers

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