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Web service QoS prediction method based on collaborative filtering

A prediction method and collaborative filtering technology, applied in the field of web services, can solve the problem of insufficient accurate QoS prediction

Active Publication Date: 2015-01-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the sparsity of QoS data, the information obtained from similar client users and similar web services is not enough to provide accurate QoS prediction

Method used

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  • Web service QoS prediction method based on collaborative filtering
  • Web service QoS prediction method based on collaborative filtering
  • Web service QoS prediction method based on collaborative filtering

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0048] Such as figure 1 As shown, the web service selection based on collaborative filtering includes the following parts:

[0049] (1) Request: The client user proposes a QoS-based Web service selection requirement;

[0050] (2) QoS Prediction: The server side predicts the QoS of each web service to the target client user according to the client user's demand and the collected QoS data.

[0051](3) Pruning: The server prunes the candidate web services according to the prediction results, and removes some services that are obviously "dominated" by other services from the candidate queue.

[0052] (4) QoS-based Selection: According to the candidate web services screened by the Pruning process, web service selection is performed according to the QoS requirements of the client users.

[0053] In the above step 2), the server-side QoS prediction...

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Abstract

The invention discloses a Web service QoS prediction method based on collaborative filtering. The result of the QoS predicted by the server terminal is more accurate through calculating the degree of similarity of the Web services by the A-Cosine method and solving the data sparseness problem by using the information of QoS of a similar Web service aiming at a similar client-side user.

Description

technical field [0001] The invention belongs to the field of web services, and mainly realizes a web service QoS prediction method based on collaborative filtering. Background technique [0002] With the rise of networked applications and the concept of "software as a service", the main form, operation mode, production mode and usage mode of software systems in the Internet environment are undergoing tremendous changes. Building on-demand loosely coupled distributed application systems through service reuse and dynamic aggregation has become an important trend in future network software development. However, with the explosive growth of the number of services, a large number of services with the same function and different non-functional characteristics are distributed on the network. How to select a service with better quality from a set of services with equivalent functions has become a common problem. Web service selection based on QoS has become a hot research field in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08
Inventor 吴健陈亮冯怡鹏李莹邓水光尹建伟吴朝晖
Owner ZHEJIANG UNIV