Web service QoS (Quality of Service) on-line prediction method based on geographic position information of user
A geographic location information and geographic location technology, applied in the field of Web service QoS online prediction based on user geographic location information, can solve problems such as complex topology, reduced PCC similarity calculation accuracy, and complex Web service architecture
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[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0045] Such as figure 1 As shown, the overall flow chart of the present invention includes the following parts:
[0046] Process 1: Collect historical QoS data and IP information provided by users. Assuming that there are m users and n services in total, then: (1) Use historical data to generate an m*n user-service QoS matrix R: where each item Rij is the QoS usage of user i for service j. (2) Use the user's IP information to generate the user's geometric geographic location coordinates. Each user corresponds to a tuple (alt(i), lat(i)), where alt(i) represents the longitude position of user i, and lat(i) represents the latitude position of user i.
[0047] Process 2: Calculate the relative distance between users according to the geometric geographic tuple. The distance formula is as follows:
[0048] dist ( ...
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Abstract
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