A Combination Approach to QoS Prediction of Web Services
Identifieur interne : 001675 ( Main/Exploration ); précédent : 001674; suivant : 001676A Combination Approach to QoS Prediction of Web Services
Auteurs : Dongjin Yu [République populaire de Chine] ; Mengmeng Wu [République populaire de Chine] ; Yuyu Yin [République populaire de Chine]Source :
- Lecture Notes in Computer Science [ 0302-9743 ]
Abstract
Abstract: With a growing number of alternative Web services that provide the same functionality but differ in quality properties, the problem of selecting the best performing candidate service is becoming more and more important. However, users can hardly have invoked all services, meaning that the QoS values of some services are missing. In this paper, we propose a combination approach used to predict such missing QoS values. It employs an adjusted user-based algorithm using Pearson Correlation Coefficient to predict the QoS values of ordinary services. For services with constantly poor performance, however, it employs the average QoS values observed by different service users instead. An extensive performance study based on a real public dataset is finally reported to verify its effectiveness.
Url:
DOI: 10.1007/978-3-642-37804-1_11
Affiliations:
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However, users can hardly have invoked all services, meaning that the QoS values of some services are missing. In this paper, we propose a combination approach used to predict such missing QoS values. It employs an adjusted user-based algorithm using Pearson Correlation Coefficient to predict the QoS values of ordinary services. For services with constantly poor performance, however, it employs the average QoS values observed by different service users instead. An extensive performance study based on a real public dataset is finally reported to verify its effectiveness.</div></front></TEI><affiliations><list><country><li>République populaire de Chine</li></country><region><li>Zhejiang</li></region><settlement><li>Hangzhou</li></settlement></list><tree><country name="République populaire de Chine"><region name="Zhejiang"><name sortKey="Yu, Dongjin" sort="Yu, Dongjin" uniqKey="Yu D" first="Dongjin" last="Yu">Dongjin Yu</name></region><name sortKey="Wu, Mengmeng" sort="Wu, Mengmeng" uniqKey="Wu M" first="Mengmeng" last="Wu">Mengmeng Wu</name><name sortKey="Yin, Yuyu" sort="Yin, Yuyu" uniqKey="Yin Y" first="Yuyu" last="Yin">Yuyu Yin</name><name sortKey="Yin, Yuyu" sort="Yin, Yuyu" uniqKey="Yin Y" first="Yuyu" last="Yin">Yuyu Yin</name><name sortKey="Yu, Dongjin" sort="Yu, Dongjin" uniqKey="Yu D" first="Dongjin" last="Yu">Dongjin Yu</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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