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Multi-stage semantic Web service finding method

A discovery method and web service technology, applied in electrical components, transmission systems, etc., can solve problems such as slow speed and complex implementation

Active Publication Date: 2009-09-30
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this semantic Web service discovery method is that the accuracy is relatively high, and the disadvantage is that the speed is slow and the implementation is more complicated.

Method used

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Embodiment Construction

[0057] Content of the present invention mainly comprises the following aspects:

[0058] 1. Web service description language SSWSDL

[0059] Currently, there are many Web service description languages, such as OWL-S, DAML-S, WSDL and so on. However, the grammar of these languages ​​is complex and difficult to master. Therefore, the present invention proposes a Web service description language SSWSDL with concise syntax and easy to use. In this language, Web services are considered to be composed of common attributes, input, output, execution antecedent constraints, execution postcondition constraints, and execution result constraints. Common attributes include service name, calling address, interface name, domain ontology, etc. The input includes the actual data type, name, value, and ontology concept to which the input belongs, while the output includes the actual data type of the output and the ontology concept to which it belongs. Constraints are expressed using a subse...

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Abstract

The invention discloses a multi-stage semantic Web service finding method. The invention utilizes correlative theories and technologies in semantic Web to construct a Web service description document containing semantic information. On the basis, correlative reasoning tools and methods are also utilized to search a Web service satisfying a service request. In summary, Web service finding comprises two paths with respective advantages and defects, namely a similarity-measuring function-based method with a good service finding speed and a constraint matching-based method with high service finding precision. The invention provides the multi-phase semantic Web service finding method integrating the two service finding paths and sequentially comprises the three matching stages: data type matching, body concept matching and constraint matching as well as relative matching algorithms.

Description

technical field [0001] The invention relates to a method for quickly and accurately locating required Web services in distributed computing based on Web services. Background technique [0002] As an important means of enterprise application integration, Web service provides a fast and convenient way of enterprise application development, which is mainly due to its highly cross-language, cross-platform and other characteristics. For a web service, the first condition for it to be used by a service requester is that the latter needs to know its location, that is, the first step for a service requester to call a service is to discover the service. The traditional service discovery mechanism is based on UDDI / WSDL, which is essentially done through keyword matching. An important shortcoming of this discovery mechanism is the lack of explicit semantic description, which may cause two web services represented by the same WSDL description to have completely different functions. At...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06
Inventor 吕建陶先平陶望胜
Owner NANJING UNIV
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