Márcia Cristina Moraes

A cooperative approach for composite ontology mapping

This paper proposes a cooperative approach for composite ontology mapping. We first present an extended classification of automated ontology matching and propose an automatic composite solution for the matching problem based on cooperation. In our proposal, agents apply individual mapping algorithms and cooperate in order to change their individual results. We assume that the approaches are complementary to each other and their combination produces better results than the individual ones. Next, we compare our model with three state of the art matching systems. The results are promising specially for what concerns precision and recall. Finally, we propose an argumentation formalism as an extension of our initial model. We compare our argumentation model with the matching systems, showing improvements on the results.

A Negotiation Model for Ontology Mapping

This paper presents an agent negotiation model for ontology mapping. We consider that different agents working on the basis of particular approaches arrive to distinct mapping results that must be shared, compared, chosen and agreed. Then, the final mapping result must reflect a better solution than individual approaches.

Agentes Pedagógicos Animados

Os ultimos anos viram surgir um novo paradigma na construcao das interfaces dos ambientes interativos de aprendizagem: os agentes pedagogicos animados. Estes sao personagens capazes de guiar os estudantes, auxiliando-os na realizacao de tarefas, apresentando dicas e respostas afetivas apropriadas para cada situacao de aprendizagem. Pesquisas mostram que os usuarios aplicam regras sociais aos computadores, mesmo que suas interfaces nao sejam explicitamente antropomorficas. Desta maneira, varios pesquisadores tem buscado personificar a interface de seus sistemas incorporando a elas agentes animados, os quais apresentam comportamentos coerentes e crediveis, semelhantes aos dos seres humanos. Pesquisas na area indicam que a personificacao da interface realizada atraves destes personagens pode ter um efeito positivo nas experiencias de aprendizagem dos estudantes.

Elaboração de Objetos de Aprendizagem para o LAPREN: Processo de Desenvolvimento e Sistema de Produção

A educacao a distancia tem ganhado significativa atencao tanto na academia quanto nas iniciativas governamentais. Neste contexto, cresce tambem a preocupacao com a avaliacao da qualidade dos diversos aspectos destes cursos mediados pelas tecnologias da informacao e comunicacao. Apesar de muitos trabalhos discutirem diversos aspectos da avaliacao em Ead, a literatura carece de relatos de experiencia que, especialmente, abordem os cursos tecnicos a distancia que possuem especificidades relevantes. Assim, este trabalho relata uma experiencia onde se avalia e adapta uma das propostas existentes na literatura de avaliacao mediada por foruns, ao contexto dos cursos tecnicos a distancia, constituindo-se esta adaptacao e sua discussao as principais contribuicoes do mesmo.Em Educacao a Distância mediada por meio de Ambientes Virtuais de Aprendizagem, foruns de discussao sao um instrumento importante e amplamente utilizado na articulacao de debates e discussoes entre os atores envolvidos no processo de ensino e aprendizagem. Com a ampla utilizacao dos foruns muitas mensagens sao trocadas e isso, por vezes, excede a capacidade de monitoramento por parte dos professores e tutores. O presente trabalho apresenta a concepcao de um classificador de mensagens de foruns que classifica as mensagens em positivas ou negativas, a fim de identificar mensagens que necessitam de maior atencao. Este trabalho aplica conceitos de mineracao de textos, com o algoritmo SVM obtendo taxas de acerto satisfatorias.Este artigo apresenta o framework Contagious, cujo proposito e estabelecer diretrizes que norteiem a construcao de redes sociais online orientadas a Difusao de Inovacoes. Compreendo-se o fenomeno das redes sociais online como consequencia natural do carater social do ser humano, vislumbrou-se esse meio tecnologico de comunicacao e interacao social como potencial ferramenta para a extensao de praticas educativas, com vistas a formacao do carater integral do cidadao. Para isso, foi adotada a teoria de Difusao de Inovacoes, propria das ciencias sociais. As contribuicoes deste trabalho, portanto, compreendem duas vertentes: a) o mapeamento de principios de uma teoria social na forma de recursos computacionais e; b) um enfoque orientado a educacao sobre as redes sociais online.A proposta do trabalho consiste em desenvolver um sistema para ser usado no celular como ferramenta de auxilio para alfabetizacao, utilizando-se de imagens e sons como forma de facilitar o aprendizado. Como metodo de desenvolvimento utiliza-se o processo P@PSEduc (Processo Agil para Software Educativo) e a ferramenta JME (Java Micro Edition).O crescente uso e difusao de tecnologias Web, a ubiquidade de ferramentas educacionais vem proporcionado verdadeiras revolucoes nos ambientes de ensino. Atualmente, sabe-se que nao mais se deve tratar alunos de forma homogenea, como se assim os fossem. Em face disso, este artigo apresenta um sistema adaptativo de apoio a aprendizagem colaborativa, cujo tema e a construcao e representacao do conhecimento por meio de mapas mentais multimidia. Tal sistema, baseia-se na Teoria da Carga Cognitiva, cuja preocupacao primaria e a facilidade com a qual as informacoes sao processadas pelos individuos.

How Planning Becomes Improvisation? - A Constraint Based Approach for Director Agents in Improvisational Systems

The aim of this paper is to explain how planning becomes improvisation for agents represented through animated characters that can interact with the user. Hayes-Roth and Doyle [10] proposed some changes in the view of intellectual skills traditionally studied as components of artificial intelligence. One of these changes is that planning becomes improvisation. They pointed out that like people in everyday life, animated characters rarely will have enough information, time, motivation, or control to plan and execute extended courses of behavior. Animated characters must improvise, engaging in flexible give-and-take interactions in the here-and-now. In this paper we present an approach to that change. We propose that planning can be understood as improvisation under external constraints. In order to show how this approach can be used, we present a multi-agent architecture for improvisational theater, focusing on the improvisational directors processes.

Teaching Object-Oriented Programming in First-Year Undergraduate Courses Supported By Virtual Classrooms

Students struggle to learn computer programming. In recent years, there has been a dramatic drop in the number of students enrolling in IT and computer science courses. There is high dropout rate among first year students undertaking computer science courses. Because introductory programming courses traditionally have a high failure rate, this has been a barrier for students and staff in computer science faculties. Programming is acknowledged by many to be an inherently complex, intellectual activity with students struggling through their first programming subjects and lecturers are struggling to teach it. This problem is no different at School of Computer Science at PUCRS in Brazil. The department has for many years trying to improve the teaching of programming courses to the students. This paper describes the use of a classroom in the MOODLE environment to teach Java programming to first year students.

A Wiki como ferramenta de aprendizagem coletiva: a percepção do aluno adulto

O presente trabalho analisa o processo de colaboracao de alunos adultos em wikis buscando embasamento teorico na teoria socio-historico-cultural de Vygotsky aplicada ao contexto das Novas Tecnologias de Comunicacao e Informacao. O principal objetivo foi compreender como alunos adultos reagem a forma de interacao cooperativa que a wiki pressupoe. Para tanto, o trabalho propos a dois grupos de alunos de Lingua Inglesa a producao de um texto especifico dos seus respectivos cursos em uma wiki. Apos terminada a tarefa, ambos os grupos responderam a questionarios explicitando suas impressoes do processo.

CV-Muzar Using a Multiagent System for Group Formation

The purpose of this paper is to present two agents’ societies responsible for group formation (sub-communities) in CV-Muzar (Augusto Ruschi Zoobotanical Museum Virtual Community of the University of Passo Fundo). The first is a static society that intends to investigate the groups in the CV-Muzar. The second is a dynamical society that will analyze the existing groups and look for participants that have common subjects in order to constitute a sub-community. The formation of sub-communities is a new module within the CV-Muzar that intends to bring the participants together according to two scopes: similarity of interests and knowledge complementarities.

Improvisational multi-agent organization: using director agent to coordinate improvisational agents

Coordination is an important characteristic in the development of agents organizations, allowing agents to understand the existent relationships among agents that compose an specific organization. This paper proposes an improvisational multi-agent organization which incorporate a new model of coordination, named improvised direction. The organization is based on the ideas of improvisational theatre, and improvised direction represents the kind of coordination that an improvisational director executes over its actors. The model of coordination is developed considering an improvisational director functionality, where the director organizes a group of actors using improvisation processes related to constraint satisfaction and analogy by similarity. This kind of coordination is particularly interesting in systems that support human-computer interaction such as learning environments, entertainment and electronic commerce.

An analysis of different roles involved in learning objects production

The production of learning objects has been investigated in order to improve its quality, reusability, among others aspects. In this context, besides of analyzing the final product of the objects and its methodologies, it is also important to analyze the roles involved in the production, including the teams necessary skills to produce a learning object with high quality, reuse and able to solve a problem learning. Thus, this paper presents an analysis of the major roles involved in the production of learning objects. This analysis is based on a set of research and scientific papers that mention the roles involved in the production of learning objects.