A. Bouch, N. Bhatti, and A. J. Kuchinsky, "Quality is in the eye of the beholder: Meeting users' requirements for Internet Quality of Service," ACM CHI'2000.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....of the absolute guarantee model is that it is usually difficult to determine appropriate deadlines for web services. For example, the tolerable delay threshold of a web user may vary significantly depending on web page design, length of session, browsing purpose, and properties of the web browser [12]. Since system load can grow arbitrarily high in a web server, it is impossible to satisfy the absolute delay guarantees of all service classes under overload conditions. In the absolute guarantee model, deadlines that are too loose may not provide necessary service differentiation because the ....

A. Bouch, N. Bhatti, and A. J. Kuchinsky, "Quality is in the eye of the beholder: Meeting users' requirements for Internet Quality of Service," ACM CHI'2000.

....for those e tailers, a successful sales transaction for merchandise. In [17] we come upon a very interesting finding related to user QoS, they found that web pages that were retrieved faster were judged to be significantly more interesting than their slower counterparts. Other findings in [5] presented the notion of web content delivery to the user, if the web content is progressively displayed the user was more tolerant of the response time. This provides the user with feedback concerning the web server, knowing that the downloading process is still taking place. As well, based on ....

....point of purchasing these items, it would be advantageous to improve the response time. As well for the e tailers, 4] finds that users believe that if performance is poor, the security of the site may be compromised and poor performance also leads to loss of customers. In light of the research in [5], 4] and [17] we are able to see what affects a users impression of a web site, response time seems to be a very important component. In our research we believe that the resources of the client are just as important as the network and web server resources. To provide a clearer picture, let us ....

Bouch, A., Kuchinsky, A., Bhatti, N., Quality is in the Eye of the Beholder: Meeting Users' Requirements for Internet Quality of Service, Internet Systems and Applications Laboratory, HP Laboratories, Palo Alto, January, 2000.

....portions of the Internet will see service differentiation in the near future [9, 33] Since best effort service will continue to be dominant, all Internet QoS mechanisms are layered on top of the existing Internet rather than replacing it with a new infrastructure. Internet design principles [10] such as connectionless service, robustness and end to end principles should serve as a guidance for any proposed enhancement to current Internet. 3 Internet QoS Definition We define QoS as providing service differentiation and performance assurance for Internet applications. Service ....

....but also by the server s. As the server reaches and surpasses its capacity, the service provided to its users degrades to the point of being unacceptable and unavailable. This may not be a concern to a non commerce Web site but for a business related one, it can be the kiss of death. In [10], Bouch et al. studied user perceived QoS and its implications. They found that users will generally not tolerate latencies greater than about ten seconds and that poor Web site performance leads to poor company image and often compromises users conceptions of the security of the site . They ....

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A. Bouch, A. Kuchinsky, and N. Bhatti. Quality is in the Eye of the Beholder: Meeting Users' Requirements for Internet Quality of Service. in Proceedings of ACM conference on Human Factors in Computing Systems, to appear April 2000.

.... the current level of service does not satisfy the requirements of many users [5] 1] Failure to understand users QoS requirements may affect users conception of a company s stature and commercial viability which, in turn, affects the business interests of service providers and advertisers [6]. The future Internet will have more users and support a greater diversity of Internet applications. It has the potential to change the way that consumers interact with companies. Research is needed to identify users requirements for QoS and the schemes that are used to charge them for it. Only ....

Bouch, A., Bhatti, N., Kuchinsky, A.J.: Quality is in the Eye of the Beholder: Meeting Users' Requirements for Internet Quality of Service. Proceedings of CHI'2000 (2000) 297-304

....on high2 performance servers. In [34] an adaptive delay differentiated services architecture is described that is based on performance isolation and admission control. Unlike these architectures, ours uses control theory as a mathematical foundation for adaptation. User studies are discussed in [19, 16] which analyze the perceived quality of adaptation from a user s perspective. In [23] an architecture is proposed for online transcoding of web objects. Transcoding adapts to differences in clientside resources, such as differences in resource capacity between low bandwidth wireless and ....

A. Bouch, A. Kuchinsky, and N. Bhatti. Quality is in the eye of the beholder: meeting users' requirements for internet quality of service. In Conference on Human Factors in Computing Systems, New York, NY, April 2000.

....for acceptable QoS Application Minimum user requirement Inelastic applications Video 5 frames per sec [15] 13] Audio 30 packet loss . 16] 13] Latency 400ms Interactive real time multimedia Delay 200ms Jitter 200ms Elastic applications Web page access Latency 11 seconds [17][18] The statistics presented in Table 1 can be used as guidelines for application specific QoS requirements. However, the context in which applications are used, and users intentions, make a difference on top of inherent media A User centered Approach to Managing Quality of Service qualities. ....

Bouch, A., Bhatti, N., & Kuchinsky, A.J. (2000). Quality is in the eye of the beholder: Meeting users' requirements for Internet Quality of Service. To be presented at CHI'2000. The Hague, The Netherlands, April 1-6, 2000.

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A. Bouch, N. Bhatti, and A. J. Kuchinsky, "Quality is in the eye of the beholder: Meeting users' requirements for Internet Quality of Service," ACM CHI'2000.

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A. Bouch, N. Bhatti, and A. J. Kuchinsky, "Quality is in the Eye of the Beholder: Meeting Users' Requirements for Internet Quality of Service," ACM CHI'2000.

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