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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1325

Authors: Surafel, Lemma
Advisors: Dr. Dawit Bekele
Keywords: Web service description
web services
audio content adaptation
Copyright: 2005
Date Added: 29-Aug-2008
Publisher: Addis Ababa University
Abstract: In pervasive computing, multimedia information is accessed using different devices with different processing power, storage size, display size, etc. Hence, the information that needs to be displayed has to be modified in order to meet the devices’ requirements. This modification is called content adaptation. Multimedia content adaptation can be done at various places in different frameworks. Some frameworks propose that content adaptation should be done by content servers, while others consider that it should be done at the client side. Another approach considers that content adaptation should be performed by third party services that can be implemented using web services. The objective of this research is to find ways of facilitating discovery of these third party content adaptation web services by users of these services. In order to use these web services, one has to be able to find them on the Web. However, today, finding the right web service for a specific task (multimedia content adaptation in our case) is difficult. This is mainly because of the type of description used to advertise the web services. Current standards that are used to describe web services are syntactic. Syntactic description of web services contains some keywords and signature of the web service, which is later, used for searching the services. However, this information does not allow high rate of success during service discovery. These limitations of the current standards can be improved by using semantic description methods. Semantic description gives the meanings and relationships of the terms and concepts used in describing a web service, which improves the discovery of a web service. In order to allow semantic description of multimedia content adaptation web services, we have developed an ontology for multimedia content adaptation web services. To develop this ontology, we first studied different ontology development methods based on which we formulated an approach using which we have developed the ontology by identifying different types of audio content adaptation web services and their properties that can be used to increase the semantic information of the audio content adaptation web services. viii In this research, we have also developed a prototype to show the usability of the ontology that we developed. The prototype allows a user to advertise a web service using the ontology and look for a specific web service.
Description: A Thesis submitted to the School of Graduate Studies of Addis Ababa University in partial fulfillment of the requirements for the degree of Master of Science in Computer Science
URI: http://hdl.handle.net/123456789/1325
Appears in:Thesis - Computer Science

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