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Service combination method based on service quality under service oriented architecture (SOA) in network system

A quality of service and service composition technology, applied in the field of heuristic service composition, can solve problems such as large problem space, low efficiency of optimal service composition scheme, and inability to meet real-time needs of users, so as to reduce problem space, improve composition efficiency, and improve The effect of degree of automation

Inactive Publication Date: 2012-11-28
NANJING UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, in today's enterprise-level B2B and B2C large-scale commercial applications, when there are a large number of computing nodes in the distributed combination process or the resource pool corresponding to each computing node has a large number of candidate service objects, the problem space for solving the optimal combination scheme is relatively large. Large, resulting in low efficiency when the computer finds the optimal service combination solution, which cannot meet the real-time needs of users

Method used

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  • Service combination method based on service quality under service oriented architecture (SOA) in network system
  • Service combination method based on service quality under service oriented architecture (SOA) in network system
  • Service combination method based on service quality under service oriented architecture (SOA) in network system

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Embodiment 1

[0037] Such as figure 1As shown, the present invention discloses a service combination method based on service quality under the SOA framework in a network system. After storing the distributed combination mode data in the computer memory, the following steps are included after starting the program operation: Step 1, the CPU reads Get the distributed composition mode description file stored in the computer memory; step 2, determine the functionally matching candidate web service resource pool for each distributed computing node in the distributed composition mode under the SOA architecture; step 3, analyze each computing The candidate service resource pool corresponding to the node performs statistical processing on each dimension quality index in the resource pool; step 4, establishes the statistical interval representation of the service object pool corresponding to each distributed computing node on each quality index; step 5. Discretize each continuous quality index statis...

Embodiment 2

[0130] The basic starting point of the service composition method based on the quality of service under the SOA architecture in the network system is to decompose the global aggregation utility value function of the combination scheme to obtain the local heuristic utility value function, and to perform local selection according to the local heuristic utility value function to obtain the service representative , using service representatives to transform the original service composition problem into an equivalent mixed integer programming problem. Apply the existing mature integer programming method to solve the problem and get the optimal combination scheme.

[0131] The specific embodiment of the method of the present invention is introduced by taking the service composition of the following B2C business process as an example.

[0132] A user wants to obtain video network services through a mobile phone. The B2C business process involves the interactive combination of three c...

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Abstract

The invention discloses a service combination method based on the service quality under an service oriented architecture (SOA) in a network system, comprising the following steps after saving distributed combination mode data in a computer memory: reading a distributed combination mode description file; determining a candidate web service resource pool matched in function; performing statistical process; building a statistical interval representation; discretizing each continuous quality index statistical interval; performing a local heuristic selection to each distributed computation node under the limitation of the initial mass; obtaining a service representation under the mass limitation, and converting the service combination problem under the SOA into an equivalent MIP problem by using the service representation obtained by each distributed computation node; and obtaining an optimal service combination scheme by solving the MIP problem based on the integer programming technology.In the invention, the optimal selection process of the service combination under the entire SOA is completely realized by the computer automatically, thereby enhancing the automation and the operation efficiency of the service combination.

Description

technical field [0001] The present invention relates to a heuristic service combination method based on service quality under SOA (Service-Oriented Architecture, service-oriented architecture), especially suitable for portable computing devices connected to the network in a distributed environment, and specific services for users Quality requirements, and quickly select the optimal service combination plan to meet the real-time response requirements of users. Background technique [0002] Under the SOA architecture, service objects and organizational entities described on different computing nodes need to interact with each other in information, data, and resources to complete a distributed composite business process. When executing this business process, it is necessary to instantiate the service objects and organizational entities on the distributed computing nodes—that is, to select the most suitable combination scheme from the service objects and organizational entities ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
Inventor 齐连永窦万春王联民
Owner NANJING UNIV
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