Adding semantic web services matching and discovery support to the MoviLog platform

Semantic Web services are self describing programs that can be searched, understood and used by other programs. Despite the advantages Semantic Web services provide, specially for building agent based systems, there is a need for mechanisms to enable agents to discover Semantic Web services. This paper describes an extension of the MoviLog agent platform for searching Web services taking into account their semantic descriptions. Preliminary experiments showing encouraging results are also reportedIFIP International Conference on Artificial Intelligence in Theory and Practice - Agents 1Red de Universidades con Carreras en Informática (RedUNCI

Adding semantic web services matching and discovery support to the MoviLog platform

Semantic Web services are self describing programs that can be searched, understood and used by other programs. Despite the advantages Semantic Web services provide, specially for building agent based systems, there is a need for mechanisms to enable agents to discover Semantic Web services. This paper describes an extension of the MoviLog agent platform for searching Web services taking into account their semantic descriptions. Preliminary experiments showing encouraging results are also reportedIFIP International Conference on Artificial Intelligence in Theory and Practice - Agents 1Red de Universidades con Carreras en Informática (RedUNCI

Assessing Cognitive Complexity in Java-Based Object-Oriented Systems: Metrics and Tool Support

Software cognitive complexity refers to how demanding the mental process of performing tasks such as coding, testing, debugging, or modifying source code is. Achieving low levels of cognitive complexity is crucial for ensuring high levels of software maintainability, which is one of the most rewardful software quality attributes. Therefore, in order to control and ensure software maintainability, it is first necessary to accurately quantify software cognitive complexity. In this line, this paper presents a software metric to assess cognitive complexity in Object-Oriented (OO) systems, and particularly those developed in the Java language, which is very popular among OO programming languages. The proposed metric is based on a characterization of basic control structures present in Java systems. Several algorithms to compute the metric and their materialization in the Eclipse IDE are also introduced. Finally, a theoretical validation of the metric against a framework specially designed to validate software complexity metrics is presented, and the applicability of the tool is shown by illustrating the metric in the context of ten real world Java projects and relevant metrics from the well-known Chidamber-Kemerer metric suite

Revising WSDL documents: Why and How

Although Web service technologies promote reuse, Web Services Description Language (WSDL) documents that are supposed to describe the API that services offer often fail to do so properly. Therefore, finding services, understanding what they do, and reusing them are challenging tasks. The authors describe the most common errors they’ve found in real WSDL documents, explain how these errors impact service discovery, and present some guidelines for revising them.Fil: Crasso, Marco Patricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto Superior de Ingeniería del Software. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto Superior de Ingeniería del Software; ArgentinaFil: Rodriguez, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto Superior de Ingeniería del Software. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto Superior de Ingeniería del Software; ArgentinaFil: Zunino Suarez, Alejandro Octavio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto Superior de Ingeniería del Software. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto Superior de Ingeniería del Software; ArgentinaFil: Campo, Marcelo Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto Superior de Ingeniería del Software. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto Superior de Ingeniería del Software; Argentin

Estimating Web Service Interface Quality through Conventional Object-oriented Metrics [Latindex]

Historically, software engineers have conceived metric suites as valuable tools to estimate the quality of their software artifacts. Recently, a fresh computing paradigm called Service-Oriented Computing (SOC) has emerged at the crossing of massively distributed and heterogeneous software. This paper presents a statistical correlation analysis showing that classic software engineering metrics can be used to predict the most relevant quality attributes of WSDL documents, the essential software artifact when materializing this novel computing paradigm with Web-based technologies. For the experiments, two recent WSDL-level metrics catalogs and 154 real world WSDL documents have been employed.Fil: Ordiales Coscia, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Tandil. Instituto Superior de Ingenieria del Software; Argentina;Fil: Crasso, Marco Patricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Tandil. Instituto Superior de Ingenieria del Software; Argentina;Fil: Mateos Diaz, Cristian Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Tandil. Instituto Superior de Ingenieria del Software; Argentina;Fil: Zunino Suarez, Alejandro Octavio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Tandil. Instituto Superior de Ingenieria del Software; Argentina

Anti-pattern Free Code-first Web Services for State-of-the-art Java WSDL Generation Tools

Service-Oriented Computing (SOC) promotes structuring applications via coarse-grained, remote components called services. To materialise SOC, web services is the most common choice. A web service comprises an implementation and a description using the Web Services Description Language (WSDL). Web services are often built by first implementing their behaviour and then generating its WSDL document via automatic tools. However, bad design practices already present in a service implementation may end up affecting the quality of its WSDL document. For web services to be reusable, good WSDL designs are crucial. Previously, Mateos et al. show that there is a high correlation between Object-Oriented (OO) metrics from service implementations and the occurrences of 'anti-patterns' in WSDL documents. In this follow-up paper, these results are extended to all the existing WSDL generation tools. A detailed analysis of the impact of OO metric-driven code refactorings on the quality of WSDL documents is also reported.Fil: Ordiales Coscia, José Luis. No especifíca;Fil: Mateos Diaz, Cristian Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto Superior de Ingeniería del Software. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto Superior de Ingeniería del Software; ArgentinaFil: Crasso, Marco Patricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto Superior de Ingeniería del Software. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto Superior de Ingeniería del Software; ArgentinaFil: Zunino Suarez, Alejandro Octavio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto Superior de Ingeniería del Software. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto Superior de Ingeniería del Software; Argentin

An Evaluation on Developer’s Acceptance of EasySOC : A Development Model for Service-Oriented Computing

Different development methods have been proposed for enabling the construction of software with the Service-Oriented Computing (SOC) paradigm . Service-oriented applications invoke services that developers must first discover, engage, and in time potentially replace with newer versions or even alternative services from differentproviders. Hence, the widely agreed development methodology involves three main activities, including service discovery, service incorporation into applications, and service replacement. EasySOC is a very recent approach for developing service-oriented applications that decreases the costs of building this kind of applications, by simplifyingdiscovery, integration and replacement of services. This paper reports some experiments evidencing the effort needed to start producing service –oriented applications with EasySOC. Result s show that users non experienced in SOC development perceive that EasySOC is convenient and easy to adopt.Sociedad Argentina de Informática e Investigación Operativ

Adding semantic web services matching and discovery support to the MoviLog platform

Semantic Web services are self describing programs that can be searched, understood and used by other programs. Despite the advantages Semantic Web services provide, specially for building agent based systems, there is a need for mechanisms to enable agents to discover Semantic Web services. This paper describes an extension of the MoviLog agent platform for searching Web services taking into account their semantic descriptions. Preliminary experiments showing encouraging results are also reportedIFIP International Conference on Artificial Intelligence in Theory and Practice - Agents 1Red de Universidades con Carreras en Informática (RedUNCI

An analysis of frequent ways of making undiscoverable Web Service descriptions

The ever increasing number of publicly available Web Services makes standardcompliant service registries one of the essential tools to service-oriented application developers. Previous works have shown that the descriptiveness of published service descriptions is important from the point of view of the algorithms that support service discovery using this kind of registries as well as human developers, who have the final word on which discovered service is more appropriate. This paper presents a catalog of frequent bad practices in the creation of Web Service descriptions that attempt against their chances of being discovered, along with novel practical solutions to them.Additionally, the paper presents empirical evaluations that corroborated the benefits of the proposed solutions. These anti-patterns will help service publishers avoid common discoverability problems and improve existing service descriptions.Sociedad Argentina de Informática e Investigación Operativ

Avoiding WSDL Bad Practices in Code-First Web Services

Service-Oriented Computing allows software developers to structure applications as a set of standalone and reusable components called services. The common technological choice for materializing these services is Web Services, whose exposed functionality is described by using the Web Services Description Language (WSDL). Methodologically, Web Services are often built by first implementing their behavior and then generating the corresponding WSDL document via automatic tools. Good WSDL designs are crucial to derive reusable Web Services. We found that there is a high correlation between well-known Object-Oriented metrics taken in the code implementing services and the occurrences of bad design practices in their WSDL documents. This paper shows that some refactorings performed early when developing Web Services can greatly improve the quality of generated WSDL documents.Sociedad Argentina de Informática e Investigación Operativ