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Web service recommendation method based on theme and service combination information

A web service and service combination technology, applied in the field of computer network services, can solve problems such as inaccurate calculation similarity and sparse historical information, and achieve the effect of short training time, wide dimension and deep precision

Active Publication Date: 2018-10-09
NANJING UNIV
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AI Technical Summary

Problems solved by technology

However, due to the sparse historical information of users on web services, the calculation of similarity is not very accurate. In order to improve the accuracy of recommendation, many current methods consider adding some user features or item features, such as time information and function, to the traditional recommendation model. subject information

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  • Web service recommendation method based on theme and service combination information
  • Web service recommendation method based on theme and service combination information
  • Web service recommendation method based on theme and service combination information

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Embodiment Construction

[0037] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0038] like figure 1 As shown, the web service recommendation method based on topic and service combination information is mainly divided into six steps:

[0039] Step 1, obtain the user's historical preference record for web services and the label, description, and service combination information of the web service;

[0040] Step 2, use the LDA model to train to obtain the service-theme matrix, and calculate the theme similarity between web services according to the service-theme matrix;

[004...

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Abstract

The invention discloses a web service recommendation method based on theme and service combination information. The method includes the steps of firstly, obtaining a historical score record of user web services and description information and service combination information of the web services; secondly, obtaining a service-theme matrix through an LDA model, and calculating the theme similarity between the web services according to the service-theme matrix; thirdly, calculating a service combination similarity matrix between the web services; fourthly, selecting a neighbor set of each web service according to the theme similarity and the service combination similarity matrix; fifthly, fusing the neighbor set and the similarity matrix with an SVD matrix decomposition model to predict a store; sixthly, selecting a plurality of services with the highest score according to the predicted score for recommendation. In the method, by introducing the considering of the service theme informationand the service combination information, the new dimension is introduced to web service recommendation, the recommendation precision is improved, and meanwhile the method can solve the cold start problem of partial service recommendation and has wide market prospects.

Description

technical field [0001] The invention relates to the technical field of computer network services, in particular to a web service recommendation method based on subject and service combination information, and is a collaborative filtering method for web service recommendation. Background technique [0002] With the rapid development of the service-oriented framework (Servcie Oriented Architecture, SOA), a large number of web services have emerged on the Internet. Web Service (Web Service) is a service based on XML and HTTPS. Its communication protocol is mainly based on SOAP. The description of the service is through WSDL, and the metadata of the service is discovered and obtained through UDDI. Web service is an application program, which exposes an API that can be called through the Web to the outside world, and the application program can be called through the Web by programming. With the development of Web 2.0 technology, a new type of web service mashup application is be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 王勇胡昊
Owner NANJING UNIV
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