Sean Wolfgand Matsui Siqueira

Universidade Federal do Estado do Rio de Janeiro (UNIRIO) · Centro de Ciências Exatas e Tecnologia (CCET)

Visando entender de quais formas os vieses cognitivos podem ocorrer no desenvolvimento de software, este mapeamento sistemático da literatura trata de investigar os impactos desses vieses cognitivos, apontando quais são os principais tipos, em quais situações eles ocorrem, os problemas que eles causam e seus possíveis métodos de mitigação. Foram id...

Workplace safety is a constant concern in the industry, especially in activities with a high risk of accidents, such as the operation of heavy machinery, material handling, and work with electricity. Risk situation training is a fundamental tool for accident prevention and promoting a safety culture in the workplace. However, these training practic...

Information sharing on the Web has also led to the rise and spread of fake news. Considering that fake information is generally written to trigger stronger feelings from the readers than simple facts, sentiment analysis has been widely used to detect fake news. Nevertheless, sarcasm, irony, and even jokes use similar written styles, making the dist...

The software segment is one that offers great potential for accumulating technological innovations. But do companies in this sector appropriate and protect their innovations? In this scenario, this article aims to present an overview of Intellectual Property as a mechanism for appropriating new knowledge assets related to Software within the three...

Information sharing on the Web has also led to the rise and spread of fake news. Considering that fake information is generally written to trigger stronger feelings from the readers than simple facts, sentiment analysis has been widely used to detect fake news. Nevertheless, sarcasm, irony, and even jokes use similar written styles, making the dist...

Pelas linhas da educação, a integração do Pensamento Computacional (PC) e da Educação Financeira (EF) favorecem a inclusão e, como temas inseridos recentemente na Educação Básica brasileira, poucos são os estudos que investigam o que entendem os profissionais da área de educação sobre tais temas (PC e EF), tanto isolados quanto integrados. Para pre...

Comunidades de perguntas e respostas (CQA) online cumprem um papel de fonte de conhecimentos e provimento de informações confiáveis, devido à natureza crowdsourced e de trilhas de informação em formato de pergunta. Nesse trabalho, investigamos o uso da CQA Stack Overflow sobre a linguagem C na aprendizagem informal de conceitos em Computação. Empre...

Métodos estatísticos oferecem ferramentas que valorizam e ilustram as validades de evidências científicas. Com esta consciência e em prol do franco desenvolvimento do Pensamento Computacional (PC), este artigo apresenta um mapeamento sistemático do estado da arte sobre as práticas do PC no Brasil. Servindo-se da string de busca nas bases da CEIE e...

As Comunidades de perguntas e respostas (CQA) online tem sido cada vez mais empregadas como fonte de conhecimento sobre diversos assuntos na Web. Nessas comunidades, o conhecimento crowdsourced gerado a partir das interações é validado pelos pares especialistas nos assuntos ou por consenso alcançado na trilha. Indo para além dessa perspectiva, como...

Algorithms designed to translate textual content into sign language (SL) expressed through avatars have been used to reduce accessibility barriers. Our research aimed to identify whether the VLibras tool, widely adopted on Brazilian government websites, is an effective accessibility solution for automatic translation into SL. It is an exploratory a...

Fake news is a problem for society as some people trust the message and react accordingly, propagating the lie. The consequences vary from a simple laugh to a death sentence. Research has focused on distinguishing between fake and fact through machine learning techniques. Most literature reviews and mappings focus on techniques that identify the fa...

Devido a pandemia do COVID-19, muitas Instituições de Ensino se viram forçadas a aderir à modalidade de ensino não presencial, chamada de Ensino Remoto Emergencial (ERE). Docentes foram desafiados a se adaptar à nova realidade. Dessa forma, houve uma procura por tecnologias educacionais e técnicas alternativas de ensino e aprendizagem que propicias...

Linking data by finding matching instances in different datasets requires considering many characteristics, such as structural heterogeneity, implicit knowledge, and URI (Uniform Resource Identifier)-oriented identification. The authors propose a context-independent approach to align Linked data through an alignment process based on the ontological...

Non-specialists in information systems (IS) development are generally unwilling to participate in initiatives for IS development, even open and collaborative ones, due to their lack of technological skills. Our research objective is to identify factors that can influence them to participate. We identify these factors through an interview-based qual...

Argumentation Mining (AM) has become a hot topic, attracting the interest of research communities ranging from artificial intelligence to computational linguistics, natural language processing, social, and philosophical sciences. Some studies have raised research questions about primary works in the area to understand and support a research agenda....

Knowing the level of complexity of digital resources is crucial to delimit their use in the educational context. This paper summarizes the contributions of my thesis and focuses on strategies to build conceptual networks based on the content of digital resources; identifying metrics and features to measure complexity in conceptual networks accurate...

As public services become digital and online, both the need to design digital public services closer to citizens’ expectations and to provide ways to improve their participation and engagement increases. To participate and co-design, citizens must understand how the public service is delivered, but understanding service provision is challenging for...

As public services become digital and online, both the need to design digital public services closer to citizens? expectations and to provide ways to improve their participation and engagement increases. To participate and co-design, citizens must understand how the public service is delivered, but understanding service provision is challenging for...

This paper describes an experiment that uses Concurrent Think-Aloud protocol (CTA) and person-to-person interviews to map searching behaviors and knowledge flows during search sessions. The findings are: (1) the most used searching strategy during exploratory searches was the “Metacognitive Domain”; and (2) online searching experts have a fair abil...

To reduce the complexity intrinsic to LD manipulation, software tools are used to publish or consume data associated to LD activities. However, few developers have a broad understanding of how software tools may be used in publication or consumption of Linked Data. The goal of this work is to investigate the use of software tools in Linked Data pub...

Atualmente as organizações são desafiadas na tentativa de fazer com que seus clientes se aproximem e possam contribuir na inovação e melhoria de seus processos de negócio. Neste contexto, percebeu-se que estas melhorias passam pela compreensão dos processos pelos clientes tornando-os aptos a contribuir. Esta pesquisa explorou o design de jogos digi...

Search engines are great allies in our daily educational tasks. However , usually, these tools are designed for factual learning and are less effective when dealing with more complex learning tasks. For this reason, in recent years, Searching as Learning (SAL) research area has been developing from studies that target the challenges involving learn...

Current search engines are not designed to facilitate learning as they do not lead the user to develop more complex skills. Searching as Learning (SAL) emerged as a research area from the intersection of information search and learning technologies in order to advance the study of searching as a learning process. However, we wonder how have the lea...

Há uma demanda por mudanças na Educação, que implicam em repensar e inovar as práticas docentes. Esse trabalho apresenta a fundamentação para uma Didática da Computação, destacando a perspectiva da Aprendizagem Ativa (AA). Para o embasamento de Ensino de Computação e conteúdos e disciplinas correspondentes, realizei uma análise dos documentos da le...

In a microservice architecture, solutions are created by teams focused on specific domains and needs. They independently develop and deploy distributed services in the network. One characteristic of microservices is decentralized data management. Each microservice may use different data management technology which best fit its needs. Hence, it is a...

To better understand users’ intent, Web search engines need to transcend its information sorter utility and acquire a more relevant ability concerning semantics’ discernment. This master thesis presents the Exploratory Search KiP model, which helps clarify the reasons why a subject is searched and supports the visualization of decision criteria use...

Nas salas de aula é comum ouvir alunos reclamando de aulas monótonas e com metodologias ultrapassadas, enquanto professores reclamam da falta de motivação dos alunos. Este distanciamento entre a realidade dos alunos (imersos em uma cibercultura) com as práticas pedagógicas vem sendo pesquisado para que haja uma integração entre estes aspectos e se...

Personalization algorithms play an essential role in the way search platforms fetch results to users. While there are many empirical studies about the effects of these algorithms on Web searches like Google and Bing, reports about personalization on social media searches are rare. This exploratory study aims to understand and quantify the limits of...

A motivação tem sido objeto de estudo em diversas áreas de conhecimento. No que diz respeito a aceitação e uso de tecnologias, a motivação pode ser considerada um fator crucial, influenciando diretamente na decisão do usuário em utilizar ou não um sistema de informação. Embora existam modelos propostos com o intuito de compreender a aceitação e o u...

Although many learning activities involve search engines, their ranking criteria are focused on providing factual rather than procedural information. In the context of Searching as Learning, providing factual information may not be the best approach. In this paper, we discuss the relevance criteria according to traditional learning theories to supp...

Search as Learning (SaL) states that search engines must support users through ways to learn during the search process. Previous studies were responsible to propose SaL as a research agenda, carrying different perspectives of investigation and research challenges to be overcome. This paper presents an overview of this research area from an analysis...

Predicting student academic performance is one of the main research topics in Learning Analytics, for which different techniques have been applied. In order to facilitate the choice of a technique, this study presents a comparative analysis among regression and classification techniques, considering different application scenarios. We used data fro...

Professores costumam buscar materiais para suas aulas usando a Internet, mas nem sempre os resultados são relevantes para o ensino. No contexto de aquisição de material didático para uma aula, este estudo exploratório objetiva comparar buscas usuais pelo tópico da aula com buscas utilizando técnicas de expansão de busca. Para isso, foi feito um que...

This paper aims to explore alternative methodologies, techniques, environments and technologies for Algorithms and Programming classes. Then, a literature mapping was performed in order to identify the alternatives that are used to teach these subjects. The paper also provides more detailed information on methodologies, techniques, environments and...

Resumo. O presente artigo apresenta o ALCASYSTEM, um Portal com técnicas de Aprendizagem Ativa para Ensino de disciplinas da área da Computação. O objetivo é auxiliar docentes que queiram adotar essas técnicas revendo a forma como o conteúdo das diversas disciplinas da área da Computação é trabalhado, geralmente com uso de tecnologias de informação...

O presente trabalho apresenta uma pesquisa sobre técnicas alternativas (de aprendizagem ativa) utilizadas no ensino de disciplinas da área da Computação. O foco da investigação foi restrito ao contexto brasileiro e foi realizado através de um mapeamento sistemático da literatura. Os trabalhos encontrados foram classificados com base em categorias d...

Nas salas de aula é muito comum ouvir alunos reclamando de aulas monótonas e com metodologias ultrapassadas; professores ainda reproduzem em sala o que seus professores fizeram décadas atrás. Novas abordagens se fazem necessárias serem discutidas e trabalhadas em cursos de formação de professores. Pesquisas sinalizam que a abordagem de Design Think...

Para os autistas as dificuldades na interação social e a dificuldade de comunicação, criam obstáculos quase intransponíveis para acompanhar a série recomendada para a idade numa escola regular sem o apoio psicopedagógico e tecnológico especializado. Questões classificadas como falta de maturidade ou dificuldades de comunicação e expressão ou a falt...

Purpose Although ontology matchers are annually proposed to address different aspects of the semantic heterogeneity problem, finding the most suitable alignment approach is still an issue. This study aims to propose a computational solution for ontology meta-matching (OMM) and a framework designed for developers to make use of alignment techniques...

Pesquisas sobre filter bubbles necessitam de mecanismos para capturar e classificar a polaridade de opinião de documentos em ambientes crowdsourced. Apresentamos um modelo preliminar baseado em aprendizado de máquina para classificar a opinião de tweets em português sobre o tema da Reforma de Previdência no contexto político brasileiro. Nossa abord...

This paper reports on an investigation into outstanding and ordinary users of two Question & Answer (Q&A) communities. Considering some behavior perspectives such as participation, linguistic traits, social ties, influence, and focus, we found that outstanding users (i) are more likely to engage in discussions; (ii) tend to use more sophisticated l...

Este artigo introduz uma proposta que habilita usuários finais, sem conhecimento em desenvolvimento de softwares, a criarem protótipos de Ambientes Virtuais de Participação Social institucionais. Assim, a proposta visa empoderar usuários finais na prática da inovação nas instituições.

Serious games are useful tools to engage, educate and train individuals in many areas. They are also suitable for the business processes management area where it is expected that business process-based digital games can bring together players (process actors) to better understand and learn organizational business processes. Building business proces...

Q&A forum relies on people with common interest to provide answers to questions. Q&A communities present a large number of unanswered questions and an automatic methodology could recommend related answers or establish relationships between associated topics. In this paper we propose to investigate the correlation of semantic entities of questions a...

Classifying content on the Web has been a common subject of research, since the amount of available data on the Web, especially in text format, grows every day. In this paper it is proposed a correlation index to measure how close a classification system based on Wikipedia categorization is of a service provided by Watson IBM that has the same purp...

This paper presents an exploratory search model capable of assisting the visualization of search patterns and clarifying best practices associated to users' decision-making process, with implications in areas related to information retrieval, humancomputer interaction, Web searching and educational technology. The Exploratory Search Knowledge-Inten...

A common problem faced by data publishers is how to semantically represent data and how to find vocabularies that best represent their data to publish in the Web. To address these problems, this paper introduces a tool, called VocRec, which can be used for recommending vocabularies for relational data that will be published as Linked Data on the We...

Identifying topics associated with a set of documents is a common task for many applications and can be used to improve various tasks involving documents on the Web, such as search, retrieval, recommendation, and clustering. To address this problem, this paper introduces a tool, called TagTheWeb, as a proposition of a generic classification method,...

Considering the development of information and communication technologies and the reality of the students, the traditional lectures tend to be monotonous and uninteresting. Active Learning is an option to this type of class, bringing techniques closer to the students, resulting in greater motivation and involvement on their part. This paper present...

A Internet das Coisas (Internet of Things - IOT) está criando um ecossistema de objetos conectados à Internet, porém que são heterogêneos em termos de recursos, características, natureza, protocolos, ações e tecnologias. Neste cenário, a descrição das coisas (Thing Description - TD) mostra-se como uma alternativa para descrever de forma padronizada...

How do important members of online Question & Answer communities (who we call experts) behave? And how do they influence the discussions in which they take part? This work reports on an investigation into these questions, which we answer through analyses exploring metrics, machine learning classifiers, and recommendations. We report on several find...

Abstract. The use of Active Learning (AL) techniques can significantly improve the teaching-learning process, as the content is explored in a more interactive, participative and relaxed way. Although expositive classes are still broadly used in Brazil, in this chapter we present some AL techniques, as well as experiences of their application in Inf...

This article presents a basic understanding of information systems with accessibility resources for elderly people and identifying problems of some devices on internet of everything (IoT) by this public and purpose of creating heuristics in this context.

The Internet of Things (IOT) is creating an ecosystem of objects connected on Internet. However, these objects are heterogeneous in terms of resources, characteristics, nature, protocols, actions and technologies. In this scenario, the Thing Description (TD) presents itself as an alternative to describe the IOT objects in a standard way and provide...

Composition and sequencing of Learning Objects are discussed in this paper through the representation of the conceptual structure of a domain in terms of its dependence relationships. The composition of Learning Objects is modeled from the narrative structure of a discourse considering the formal aspects of content and expression plans. The formal...

Linked Data principles and technologies are being investigated in various areas. In the Educational context, many studies are using Linked Data trying to solve problems of interoperability of educational data and resources, enriching educational content, and personalizing and recommending educational content and practices. This article presents a s...

To reduce the complexity intrinsic to LD manipulation, software tools are used to publish or consume data associated to LD activities. However, few developers have a broad understanding of how software tools may be used in publication or consumption of Linked Data. The goal of this work is to investigate the use of software tools in Linked Data pub...

O presente artigo busca discutir o desafio da qualidade da pesquisa científica em informática na educação no Brasil. Inicialmente, apresenta-se o cenário atual da pesquisa como forma de identificar fatores que determinam a qualidade e impacto nacional e internacional da pesquisa naárea. Após identificação desses fatores, são apresentadas ações a se...

O uso de Dados Conectados na Educação pode trazer avanços para aárea de Informática na Educação. Entretanto, alguns obstáculos ainda precisam ser superados. Neste artigo nós os discutidos sob diferentes perspectivas, tais como a propriedade e a privacidade dos dados, a necessidade de políticas públicas para incentivar sua abertura e reutilização, a...

Considering the problems faced by the teachers and students in teaching and learning the Agile Scrum Methodology as a Software Engineering practice, this paper describes a different approach. A non-computational game was developed and the students were able to have a practical experience on the use of this methodology, which in its turn brought a b...

This paper investigates expert behaviour in Q&A communities in order to understand their influence in online discussions. Our evaluation shows that experts are more likely to provide help than non-experts, and when they participate in a discussion, the quality and length of the discussions tend to increase. In addition, we propose the usage of two...