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QoS technology perception-based dynamic web service selection method

A web service and dynamic service technology, applied in the field of network services, can solve the problem of ignoring the influence of the selection method, and achieve the effect of ensuring completeness and improving efficiency.

Active Publication Date: 2013-04-10
ZHEJIANG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing service selection algorithms often only consider the optimal selection in the static service environment, while ignoring the influence of the dynamic service environment on the selection method.

Method used

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  • QoS technology perception-based dynamic web service selection method
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Embodiment Construction

[0034] Invention principle:

[0035] Before introducing the method and algorithm of the present invention, some definitions of service and skyline are firstly made.

[0036] Definition 1. Service: S={Q 1 , Q 2 ,...,Q n}, where Q n Indicates the value of a non-functional attribute of the service, n is a natural number.

[0037] Definition 2. QoS-based service domination: For service s 1 and s 2 , if s 1 dominate 2 , that is, for any non-functional attribute i, there is at least one non-functional attribute j, such that s 1 ·Q j 2 ·Q j .

[0038] Definition 3. Skyline service collection: All services that are not dominated by other services are skyline services, and a collection composed of skyline services is called a skyline service collection.

[0039] The key of dynamic service selection is to quickly locate changing services. In view of this, the present invention proposes a paper tape model, and achieves the purpose of quickly locating changing services and the...

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Abstract

The invention relates to a dynamic web service selection method, and belongs to the technical field of network service, in particular to a QoS technology perception-based dynamic web service selection method. In the method, the dynamic web service selection is performed by adopting a paper tape model and a method which combines QoS technology and skyline in a database and using a specific dynamicservice selection algorithm. The method can greatly improve the efficiency of service selection and the completeness of a service selection result, and has a wide application prospect.

Description

technical field [0001] The invention relates to a dynamic web service selection method, in particular to a dynamic web service selection method based on QoS technology perception, and belongs to the technical field of network services. 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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
Inventor 吴健陈亮李莹邓水光尹建伟
Owner ZHEJIANG UNIV