Universal Description, Discovery, And Integration Registries Research Articles

Система каталогизации и мониторинга территориально распределенных вычислительных узлов в среде WPS сервисов для решения геологических задач

The study describes an approach for heterogeneous web services cataloguing of geographically distributed computing nodes in the computational and analytical geological environment. The approach of creation of web services monitoring system is proposed. In this study the approach for web services catalogue organization based on SOAP (Simple Object Access Protocol) protocol, with use of UDDI (Universal Description Discovery and Integration) registries is reviewed. The scheme for heterogeneous web services description with an ability of further creation of catalogue is proposed. The catalogue includes functions for searching and receiving of metainformation about every web service in it. The study also describes an approach for computational and analytical geological environment creation. A number of web services for heterogeneous data processing used in geological research is described. The approaches for organization of cataloguing and web services monitoring provide a higher level of reliability of computational and analytical geological environment. They provide an information about web service reliability within environment.

A Majority Vote Based Classifier Ensemble for Web Service Classification

Service oriented architecture is a glue that allows web applications to work in collaboration. It has become a driving force for the service-oriented computing (SOC) paradigm. In heterogeneous environments the SOC paradigm uses web services as the basic building block to support low costs as well as easy and rapid composition of distributed applications. A web service exposes its interfaces using the Web Service Description Language (WSDL). A central repository called universal description, discovery and integration (UDDI) is used by service providers to publish and register their web services. UDDI registries are used by web service consumers to locate the web services they require and metadata associated with them. Manually analyzing WSDL documents is the best approach, but also most expensive. Work has been done on employing various approaches to automate the classification of web services. However, previous research has focused on using a single technique for classification. This research paper focuses on the classification of web services using a majority vote based classifier ensemble technique. The ensemble model overcomes the limitations of conventional techniques by employing the ensemble of three heterogeneous classifiers: Naive Bayes, decision tree (J48), and Support Vector Machines. We applied tenfold cross-validation to test the efficiency of the model on a publicly available dataset consisting of 3738 real world web services categorized into 5 fields, which yielded an average accuracy of 92 %. The high accuracy is owed to two main factors, i.e., enhanced pre-processing with focused feature selection, and majority based ensemble classification.

Dynamic management of UDDI registries in a wireless environment of web services: Concepts, architecture, operation, and deployment

This paper presents mechanisms for the dynamic management of the content of several Universal Description, Discovery, and Integration (UDDI) registries. These mechanisms are deployed in the context of a wireless environment of Web services. By content, it is meant the announcements of Web services that providers submit to a UDDI registry. Unlike other initiatives in the Web services domain that consider a single UDDI registry and a wired communication infrastructure, this paper is concerned with the fact that: several UDDI registries are deployed, there is no wired communication infrastructure between the UDDI registries, and absence of a centralized component for coordinating the UDDI-registries. The solution presented integrates users and software agents into what we call messengers. Initially, software agents reside in users' mobile devices and cache a description of the Web services that satisfy their users' needs. Each time a user is in the vicinity of a UDDI registry, her software agent interacts with that registry, so the details stored on Web services are submitted.