Leandro Krug Wives

LinkedWS: A Novel Web Services Discovery Model Based on the Metaphor of Social Networks

Abstract Web services are increasingly becoming the de facto implementation for the service-oriented architecture paradigm for enterprises due to their ease of use. Nevertheless, discovering these Web services is still hindered by many challenges that are partially attributed to shortcomings found in the discovery registry models (e.g., UDDI) used nowadays. These registries do not, for example, capture the rich information resulting from the various types of interactions between Web services. To address these shortcomings, and inspired by the conventional human social networks on the net, like Facebook and Twitter, we develop LinkedWS , a social networks discovery model to capture the different interactions that occur between Web services. Based on these interactions, specialized relationships are spawned and discerned. Examples of these relationships are collaboration and substitution. This paper describes LinkedWS and its potential, and reports on its implementation status.

Collaboration recommendation on academic social networks

In the academic context, scientific research works are often performed through collaboration and cooperation between researchers and research groups. Researchers work in various subjects and in several research areas. Identifying new partners to execute joint research and analyzing the level of cooperation of the current partners can be very complex tasks. Recommendation of new collaborations may be a valuable tool for reinforcing and discovering such partners. This paper presents an innovative approach to recommend collaborations on the context of academic Social Networks. Specifically, we introduce the architecture for such approach and the metrics involved in recommending collaborations. We also present an initial case study to validate our approach.

Towards a Method for Engineering Social Web Services

This paper motivates the blend of social computing with service-oriented computing, giving “birth” to social Web services. On the one hand, social computing builds user applications upon the principles of collective action and content sharing. On the other hand, service-oriented computing builds enterprise applications upon the principles of service offer and demand and loose coupling. Thanks to this blend social Web services can operate taking into account with whom they worked in the past and with whom they would like to work in the future. To engineer social Web services, this paper presents a four-step method that addresses several questions related to the engineering exercise. These questions are what relationships exist between Web services, what social networks correspond to these relationships, how to build social networks of Web services, and what social behaviors can Web services exhibit. Experiences dealing with implementing social Web services are, also, reported in the paper.

Situation-Aware Adaptive Recommendation to Assist Mobile Users in a Campus Environment

Users in a campus need information about relevant individuals, buildings, events and available resources. In this paper, we propose a system to perform situation-aware adaptive recommendation of information to assist mobile users in a campus environment. The idea is to show information about the most relevant buildings and particular individuals situated nearby the user, taking into account the user situation, i.e., a snapshot of his/her context in a given instant, including his/her current activity, position and profile. This recommendation must be adapted, depending on the dynamic evolution of the user situation. Thus, the system is pervasive in the sense that it performs the most suitable recommendation at the right moment in the right place. A prototype of the recommender is being implemented.

Towards a framework for weaving social networks principles into web services discovery

Despite the regular updates of the existing discovery techniques, the discovery of Web services continues to exacerbate users due to the large number of available Web services on the Internet. Different needs trigger the discovery of Web services such as developing new, value-added composite services and sustaining the high availability of other peers. These needs reveal three types of relationships between Web services, which are substitution, competition, and collaboration. The proposed framework includes tools that capture and update these relationships into social networks so that Web services discovery can be made smooth. Some implementation and simulation details are, also, discussed in this paper.

Even Web Services Can Socialize: A New Service-Oriented Social Networking Model

The incessant growth of the number of Web services (WSs) makes their discovery more difficult. Standard discovery registries, such as UDDI and ebXML, have their own inherent limitations as they only describe the functionality aspect of each WS and not how it relates to others. Capturing the relationships between WSs as they interact with each other can be useful in many ways. In this paper, we present a novel model that captures such relationships using social networks. We describe how these WSs social networks can be initiated and how they evolve. We also discuss the types of associations (edges) that can exist among WSs (nodes). Traversing a WS social network makes it possible to identify a community of homogeneous WSs that are functionally similar. It can also enable us to use the model as a recommender system in case we need to replace a faulty WS, find a partner WS, or an add-on WS that may enrich the current business scenario.

Grouping of business processes models based on an incremental clustering algorithm using fuzzy similarity and multimodal search

A model for searching business processes, based on a multimodal approach that integrates textual and structural information.A clustering mechanism that uses a similarity function based on fuzzy logic for grouping search results.Evaluation of search method using internal quality assessment and external assessment based on human criteria. Nowadays, many companies standardize their operations through Business Process (BP), which are stored in repositories and reused when new functionalities are required. However, finding specific processes may become a cumbersome task due to the large size of these repositories. This paper presents MulTimodalGroup, a model for grouping and searching business processes. The grouping mechanism is built upon a clustering algorithm that uses a similarity function based on fuzzy logic; this grouping is performed using the results of each user request. By its part, the search is based on a multimodal representation that integrates textual and structural information of BP. The assessment of the proposed model was carried out in two phases: 1) internal quality assessment of groups and 2) external assessment of the created groups compared with an ideal set of groups. The assessment was performed using a closed BP collection designed collaboratively by 59 experts. The experimental results in each phase are promising and evidence the validity of the proposed model.

Reactive, proactive, and extensible situation-awareness in ambient assisted living

The identification and prediction of situations in smart houses.An approach developed with the principles of reactive and proactive behavior.A case study presented with sensors and appliances.The proactivity and reasoning about uncertainty supported by probabilistic ontology. Considering that the world population is aging, health-support issues are in evidence, and many dangerous situations concerning users in their living environment may arise. This paper presents an approach to allow Ambient Assisted Living (AAL) systems to identify and predict situations that may endanger users in their living environment. Elderly people generally have difficulties to perform daily activities as using some electronic device, cooking, dressing among others. This paper offers an alternative to acquire comprehension of a former persons behavioral providing this knowledge when cognitive impairments will occur. This is a significant improvement to traditional expert systems applied to AAL as the handling of the knowledge base is adapted to the failing users behavior. We consider the user profile dynamics where new and different situations not initially planned in the development of the systems may occur. This approach was developed considering the principles of reactive and proactive behavior and the extensibility capacity of the system. Systems developed following the above-described principles can react to the current situations and anticipate proactively a dangerous situation eliminating it or controlling its impact. The approach is evaluated and verified by a case study where unwanted, dangerous situations were created and subsequently detected. The case study is based on a simulated smart house fulfilled with sensors and appliances. An application was build based on the developed approach, and it was capable of choosing the most appropriate actions to solve the unwanted situations. The main contributions of the present work are the identification and prediction of situations in smart houses, an approach developed with the principles of reactive and proactive behavior validated with a case study and supported by a probabilistic ontology.

Metadados para Objetos de Aprendizagem: prova de conceito do modelo UMBRELO

The keynotes goal is to reflect on emergent opportunities for human Discovery (in science), Creativity (in art & industry), and Learning (in education) as processes often occurring serendipitously in individuals and in communities empowered by dynamic Web connections in the global village. These reflections seem to fit best with the mandate of the CBIE Conference: sustainable education.Este trabalho apresenta uma evolucao do assistente inteligente SAE para inferir e fornecer orientacao pedagogica coerente com varias metodologias educacionais, superando uma dificuldade tradicional para este tipo de software, alem de fornecer mais apoio ao ensino-aprendizagem personalizado.O artigo fundamenta-se nos resultados do processo de desenvolvimento de um ambiente web de aprendizagem, ja modelado em dissertacao de mestrado (CABRAL,2006). O sistema tem por objetivo facilitar o acompanhamento das atividades que envolvem a definicao e a elaboracao de pre-projetos de Trabalhos de Conclusao de Curso (TCC). Para atingir tal objetivo o sistema e baseado em uma camada de agentes inteligentes que atuam como colaboradores para execucao de todas as atividades necessarias ao desenvolvimento do TCC. Para que esses agentes atuem de forma satisfatoria no ambiente e necessario o estabelecimento de um processo de comunicacao que possibilite aos agentes agirem em um nivel conceitual mais proximo do ser humano. Dessa forma, este artigo expoe os resultados obtidos ao longo do desenvolvimento dos agentes computacioniais e seus mecanismos de comunicacao.Este artigo descreve o projeto de desenvolvimento de jogo educativo baseado em metodologias participativas, pelas quais estudantes da rede publica de ensino medio idealizam, projetam e desenvolvem prototipos de um jogo sobre Sistema Imunologico e virus da Dengue. O objetivo da pesquisa e verificar os impactos do processo sobre a aprendizagem dos estudantes.O objetivo deste artigo e apresentar resultados de estudo de um caso exploratorio, realizado junto aos alunos de uma Instituicao de Ensino Superior. Como resultados, foram levantados indicadores de avaliacao do Sistema de EaD e identificados problemas, segundo a percepcao dos alunos. A partir dos resultados destaca-se que a Universidade desconhece a metodologia ITIL® e que seria fundamental que fosse implantada uma estrategia do servico (fase inicial da ITIL®), conduzindo a melhoria continua do servico e da infra-estrutura da Universidade.O facil acesso as informacoes devido a difusao da internet possibilita o enriquecimento intelectual, mas por vezes acaba por ser um meio de usufruir do conhecimento de outrem sem mencionar seus creditos/direitos autorais, o que por fim acaba na configuracao do plagio. O plagio no meio academico e uma tarefa dificil de ser controlada, devido o grande numero de trabalhos que sao feitos por uma vasta quantidade de alunos e tambem pelo excesso de tarefas dos professores e pelo pouco tempo que conseguem dedicar para o controle da qualidade e autenticidade dos trabalhos. Com isso, e importante contar com softwares que auxiliem no processo de verificacao de indicios de plagio, desta maneira o presente trabalho vislumbra desenvolver uma nova ferramenta de analise de indicios de plagio bem como aprimorar o metodo DIP – Detector de Indicios de Plagio para auxiliar o docente na verificacao da autenticidade dos trabalhos.A Neuropedagogia promove o confronto sucessivo e simultâneo entre concepcoes tacitas, crencas e valores normativos com esquemas inovadores, criando um espaco entropico e poetico no âmbito da experiencia humana. A natureza da ciencia neuropedagogica exige um modelo fractal de construcao de mundo, sustentado pelo prazer da perplexidade. Busca-se a geratriz e as leis de formacao para atingir a unanimidade sobre o conceito de educacao de pessoas com alta dotacao humana, impossivel de se concretizar, sem o recurso das ideologias filosoficas, cientificas e tecnologias aliadas as eticas.In this talk I will elaborate on the development, implementation and evaluation of the use of online tools for learning, with special attention to games and gamification, sharing and collaboration.

From Communities of Web Services to Marts of Composite Web Services

This paper presents an approach to developing