Carlos Laufer - Academia.edu (original) (raw)

Papers by Carlos Laufer

Personal robots are designed to provide entertainment, companion and communication interfaces. Th... more Personal robots are designed to provide entertainment, companion and communication interfaces. They can play an important role as natural, flexible and non-invasive interfaces to access the Web. The use of personal robots as Web interfaces is in concordance with the tendency of integrating Web technologies in the normal human activities. In general terms, we propose that personal robots can implement the everyday computing paradigm, which basically scales ubiquitous computing with respect to time. In this context, the main objective of this paper is to propose the use of personal robots as ubiquitous, multimedial, mobile, self-personalized, natural and empathic Web and Internet interfaces. We introduce Bender, a personal robot whose design incorporates these ideas.

A variety of technologies is being used to replace or supplement the face-to-face learning proces... more A variety of technologies is being used to replace or supplement the face-to-face learning process, including the World Wide Web. In this paper we present AulaNet, an environment for creating, updating and attending Web-based courses. Here we illustrate some dynamics of three experiments of course development and delivery with AulaNet, pointing out their features. We discuss how easy and how difficult it is to orchestrate technology for educational purposes.

Society for Information Technology & Teacher Education International Conference, 2001

Law in context, Dec 26, 2020

This paper presents the Knowledge Graph Usage framework, which allows the introduction of Knowled... more This paper presents the Knowledge Graph Usage framework, which allows the introduction of Knowledge Graph features to support Trust, Privacy, Transparency and Accountability concerns regarding the use of its contents by applications. A real-world example is presented and used to illustrate how the framework can be used. This article also shows how knowledge graphs can be linked to the elements of legal governance. Thus, it is an invitation to dialogue for legal and Law & Society scholars who might be interested in how the evolution of the web of data and computational sciences intersects with their own discipline.

arXiv (Cornell University), Apr 17, 2018

The Internet and the Web are now an integral part of the way most modern societies, and correspon... more The Internet and the Web are now an integral part of the way most modern societies, and corresponding political systems, work. We regard Political systems as the formal and informal political processes by which decisions are made concerning the use, production and distribution of resources in any given society. Our focus in on the sets of agents-Persons and Organizations-that govern a society, and their relations. We present a set of ontologies aimed at characterizing different kinds of direct and indirect relations that occur within a Political System. The goal is to provide a more semantically precise basis for determining more abstract notions such as "influence". These ontologies are being used for the Se Liga na Politica project, whose goal is to provide an open linked data database of Political Agents in Brazil. Whereas they are being used in a particular political system, these ontologies can be applied to different political systems.

arXiv (Cornell University), Jan 29, 2019

This paper presents the construction of a Knowledge Graph about relations between agents in a pol... more This paper presents the construction of a Knowledge Graph about relations between agents in a political system. It discusses the main modeling challenges, with emphasis on the issue of trust and provenance. Implementation decisions are also presented

arXiv (Cornell University), Sep 29, 2018

Current society is heavily influenced by the spread of online information, containing all sorts o... more Current society is heavily influenced by the spread of online information, containing all sorts of claims, commonly found in news stories, tweets, and social media postings. Depending on each user, they may be considered "true" or "false", depending on the agent's trust on the claim. In this paper, we discuss the concept of content trust and trust process, and propose a framework to describe the trust process, which can support various possible models of content trust..

Modern political life is heavily dependent and influenced by claims about facts made about partic... more Modern political life is heavily dependent and influenced by claims about facts made about participants in a Political System (seen here as sets of agents and organizations that govern a society). Such claims are commonly found in news stories, tweets, and social media postings, and, depending on each user, they may be considered "true" or "false". The decision to act based on a fact contained in a claim is dependent on the agent's trust on the claim, i.e., that the fact being stated is indeed "true". In this paper, we propose a framework to describe the trust process, which can serve as a a support for various possible models of content trust. Within this framework, we present POLARE, an ontology to describe a Political System, which includes provenance information, and illustrate how it may provide information to feed the trust process in online news stories. As a case study, we illustrate the approach using a Knowledge Graph created with such claims, which can be queried in order to better understand the existing relations between agents in the Political System in Brazil. In order to use claims in this Knowledge Graph, users will typically require provenance information to make trust judgements about them.

World Conference on WWW and Internet, 1999

This paper presents Scriba — a tool that facilities the development of Java based Web application... more This paper presents Scriba — a tool that facilities the development of Java based Web applications. The tool allows the creation of script languages that can be embedded in HTML pages in order to process data dynamically. As well as the advantages of the use of Java technology, the structure in the tool's software components allows its users to redefine

... foster a workable transition from conventional classrooms to virtual classrooms, giving theop... more ... foster a workable transition from conventional classrooms to virtual classrooms, giving theopportunity to reuse ... present; (d) online transmission of lectures with the instructor present; (e)publication of students ... VRML provides a 3D interface, which is very common in video games. ...

... of Rio de Janeiro PUC-Rio RMS Vicente 225 – RJ – Brazil - 22453900 {hugo, laufer, choren ... ... more ... of Rio de Janeiro PUC-Rio RMS Vicente 225 – RJ – Brazil - 22453900 {hugo, laufer, choren ... of the Department of Computer Science at the Catholic University of Rio de Janeiro (PUC ... The boom in the number of distance education environments should be partly credited to the ...

The Fourth Industrial Revolution (4IR) is characterized by a fusion of technologies, which is blu... more The Fourth Industrial Revolution (4IR) is characterized by a fusion of technologies, which is blurring the lines between the physical, digital, and biological spheres. In this context, two fundamental characteristics emerge: transparency and privacy. From one side, transparency can be seen as the quality that allows participants of a community to know which particular processes are being applied, by which agents, and on which data items. It is generally regarded as a means to enable checks and balances within this community, so as to provide a basis for trust among its participants. Privacy, on the other side, essentially refers to the right of an individual to control how information about her/him is used by others. The issue of public transparency versus individual privacy has long been discussed, and within already existing 4IR scenarios, it became clear that the free flow of information fostered by transparency efforts poses serious conflicting issues to privacy assurance. In order to deal with the myriad of often conflicting cross-cutting concerns, Internet applications and systems must incorporate adequate mechanisms to ensure compliance of both ethical and legal principles. In this paper, we use the OurPrivacy Framework as a conceptual framework to precisely characterize where in the design process the decisions must be made to handle both transparency and privacy concerns.

In this paper we present AulaNet, an environment for creating, updating and attending Web-based c... more In this paper we present AulaNet, an environment for creating, updating and attending Web-based courses. Here, we illustrate some dynamics of three experiments of course development and delivery with AulaNet, pointing out their features, discussing how easy and how difficult is to orchestrate technology for educational purposes.

PrivOn@ISWC, 2017

Modern political life is heavily dependent and influenced by claims about facts made about partic... more Modern political life is heavily dependent and influenced by claims about facts made about participants in a Political System (seen here as sets of agents and organizations that govern a society). Such claims are commonly found in news stories, tweets, and social media postings, and, depending on each user, they may be considered "true" or "false". The decision to act based on a fact contained in a claim is dependent on the agent's trust on the claim, i.e., that the fact being stated is indeed "true". In this paper, we propose a framework to describe the trust process, which can serve as a a support for various possible models of content trust. Within this framework, we present POLARE, an ontology to describe a Political System, which includes provenance information, and illustrate how it may provide information to feed the trust process in online news stories. As a case study, we illustrate the approach using a Knowledge Graph created with such claims, which can be queried in order to better understand the existing relations between agents in the Political System in Brazil. In order to use claims in this Knowledge Graph, users will typically require provenance information to make trust judgements about them.

2009 First International Conference on Intensive Applications and Services, 2009

The systematic method used to identify diseases is called differential diagnosis (DDx). It is mos... more The systematic method used to identify diseases is called differential diagnosis (DDx). It is mostly used by healthcare professionals to diagnose a specific disease in a patient. If the disease is diagnosed, the method could be used to recommend the medications in order to receive treatment. The goal of the current paper is to design a system based on Semantic Web Technologies to develop a system with the capability to assist healthcare professionals regarding the possible medication or drug to prescribe, according to following fundamental selection criteria.

2007 Latin American Web Conference (LA-WEB 2007), 2007

Modern political life is heavily dependent and influenced by claims about facts made about partic... more Modern political life is heavily dependent and influenced by claims about facts made about participants in a Political System (seen here as sets of agents and organizations that govern a society). Such claims are commonly found in news stories, tweets, and social media postings, and, depending on each user, they may be considered “true” or “false”. The decision to act based on a fact contained in a claim is dependent on the agent’s trust on the claim, i.e., that the fact being stated is indeed “true”. In this paper, we propose a framework to describe the trust process, which can serve as a a support for various possible models of content trust. Within this framework, we present POLARE, an ontology to describe a Political System, which includes provenance information, and illustrate how it may provide information to feed the trust process in online news stories. As a case study, we illustrate the approach using a Knowledge Graph created with such claims, which can be queried in order...

Personal robots are designed to provide entertainment, companion and communication interfaces. Th... more Personal robots are designed to provide entertainment, companion and communication interfaces. They can play an important role as natural, flexible and non-invasive interfaces to access the Web. The use of personal robots as Web interfaces is in concordance with the tendency of integrating Web technologies in the normal human activities. In general terms, we propose that personal robots can implement the everyday computing paradigm, which basically scales ubiquitous computing with respect to time. In this context, the main objective of this paper is to propose the use of personal robots as ubiquitous, multimedial, mobile, self-personalized, natural and empathic Web and Internet interfaces. We introduce Bender, a personal robot whose design incorporates these ideas.

A variety of technologies is being used to replace or supplement the face-to-face learning proces... more A variety of technologies is being used to replace or supplement the face-to-face learning process, including the World Wide Web. In this paper we present AulaNet, an environment for creating, updating and attending Web-based courses. Here we illustrate some dynamics of three experiments of course development and delivery with AulaNet, pointing out their features. We discuss how easy and how difficult it is to orchestrate technology for educational purposes.

Society for Information Technology & Teacher Education International Conference, 2001

Law in context, Dec 26, 2020

This paper presents the Knowledge Graph Usage framework, which allows the introduction of Knowled... more This paper presents the Knowledge Graph Usage framework, which allows the introduction of Knowledge Graph features to support Trust, Privacy, Transparency and Accountability concerns regarding the use of its contents by applications. A real-world example is presented and used to illustrate how the framework can be used. This article also shows how knowledge graphs can be linked to the elements of legal governance. Thus, it is an invitation to dialogue for legal and Law & Society scholars who might be interested in how the evolution of the web of data and computational sciences intersects with their own discipline.

arXiv (Cornell University), Apr 17, 2018

The Internet and the Web are now an integral part of the way most modern societies, and correspon... more The Internet and the Web are now an integral part of the way most modern societies, and corresponding political systems, work. We regard Political systems as the formal and informal political processes by which decisions are made concerning the use, production and distribution of resources in any given society. Our focus in on the sets of agents-Persons and Organizations-that govern a society, and their relations. We present a set of ontologies aimed at characterizing different kinds of direct and indirect relations that occur within a Political System. The goal is to provide a more semantically precise basis for determining more abstract notions such as "influence". These ontologies are being used for the Se Liga na Politica project, whose goal is to provide an open linked data database of Political Agents in Brazil. Whereas they are being used in a particular political system, these ontologies can be applied to different political systems.

arXiv (Cornell University), Jan 29, 2019

This paper presents the construction of a Knowledge Graph about relations between agents in a pol... more This paper presents the construction of a Knowledge Graph about relations between agents in a political system. It discusses the main modeling challenges, with emphasis on the issue of trust and provenance. Implementation decisions are also presented

arXiv (Cornell University), Sep 29, 2018

Current society is heavily influenced by the spread of online information, containing all sorts o... more Current society is heavily influenced by the spread of online information, containing all sorts of claims, commonly found in news stories, tweets, and social media postings. Depending on each user, they may be considered "true" or "false", depending on the agent's trust on the claim. In this paper, we discuss the concept of content trust and trust process, and propose a framework to describe the trust process, which can support various possible models of content trust..

Modern political life is heavily dependent and influenced by claims about facts made about partic... more Modern political life is heavily dependent and influenced by claims about facts made about participants in a Political System (seen here as sets of agents and organizations that govern a society). Such claims are commonly found in news stories, tweets, and social media postings, and, depending on each user, they may be considered "true" or "false". The decision to act based on a fact contained in a claim is dependent on the agent's trust on the claim, i.e., that the fact being stated is indeed "true". In this paper, we propose a framework to describe the trust process, which can serve as a a support for various possible models of content trust. Within this framework, we present POLARE, an ontology to describe a Political System, which includes provenance information, and illustrate how it may provide information to feed the trust process in online news stories. As a case study, we illustrate the approach using a Knowledge Graph created with such claims, which can be queried in order to better understand the existing relations between agents in the Political System in Brazil. In order to use claims in this Knowledge Graph, users will typically require provenance information to make trust judgements about them.

World Conference on WWW and Internet, 1999

This paper presents Scriba — a tool that facilities the development of Java based Web application... more This paper presents Scriba — a tool that facilities the development of Java based Web applications. The tool allows the creation of script languages that can be embedded in HTML pages in order to process data dynamically. As well as the advantages of the use of Java technology, the structure in the tool's software components allows its users to redefine

... foster a workable transition from conventional classrooms to virtual classrooms, giving theop... more ... foster a workable transition from conventional classrooms to virtual classrooms, giving theopportunity to reuse ... present; (d) online transmission of lectures with the instructor present; (e)publication of students ... VRML provides a 3D interface, which is very common in video games. ...

... of Rio de Janeiro PUC-Rio RMS Vicente 225 – RJ – Brazil - 22453900 {hugo, laufer, choren ... ... more ... of Rio de Janeiro PUC-Rio RMS Vicente 225 – RJ – Brazil - 22453900 {hugo, laufer, choren ... of the Department of Computer Science at the Catholic University of Rio de Janeiro (PUC ... The boom in the number of distance education environments should be partly credited to the ...

The Fourth Industrial Revolution (4IR) is characterized by a fusion of technologies, which is blu... more The Fourth Industrial Revolution (4IR) is characterized by a fusion of technologies, which is blurring the lines between the physical, digital, and biological spheres. In this context, two fundamental characteristics emerge: transparency and privacy. From one side, transparency can be seen as the quality that allows participants of a community to know which particular processes are being applied, by which agents, and on which data items. It is generally regarded as a means to enable checks and balances within this community, so as to provide a basis for trust among its participants. Privacy, on the other side, essentially refers to the right of an individual to control how information about her/him is used by others. The issue of public transparency versus individual privacy has long been discussed, and within already existing 4IR scenarios, it became clear that the free flow of information fostered by transparency efforts poses serious conflicting issues to privacy assurance. In order to deal with the myriad of often conflicting cross-cutting concerns, Internet applications and systems must incorporate adequate mechanisms to ensure compliance of both ethical and legal principles. In this paper, we use the OurPrivacy Framework as a conceptual framework to precisely characterize where in the design process the decisions must be made to handle both transparency and privacy concerns.

In this paper we present AulaNet, an environment for creating, updating and attending Web-based c... more In this paper we present AulaNet, an environment for creating, updating and attending Web-based courses. Here, we illustrate some dynamics of three experiments of course development and delivery with AulaNet, pointing out their features, discussing how easy and how difficult is to orchestrate technology for educational purposes.

PrivOn@ISWC, 2017

Modern political life is heavily dependent and influenced by claims about facts made about partic... more Modern political life is heavily dependent and influenced by claims about facts made about participants in a Political System (seen here as sets of agents and organizations that govern a society). Such claims are commonly found in news stories, tweets, and social media postings, and, depending on each user, they may be considered "true" or "false". The decision to act based on a fact contained in a claim is dependent on the agent's trust on the claim, i.e., that the fact being stated is indeed "true". In this paper, we propose a framework to describe the trust process, which can serve as a a support for various possible models of content trust. Within this framework, we present POLARE, an ontology to describe a Political System, which includes provenance information, and illustrate how it may provide information to feed the trust process in online news stories. As a case study, we illustrate the approach using a Knowledge Graph created with such claims, which can be queried in order to better understand the existing relations between agents in the Political System in Brazil. In order to use claims in this Knowledge Graph, users will typically require provenance information to make trust judgements about them.

2009 First International Conference on Intensive Applications and Services, 2009

The systematic method used to identify diseases is called differential diagnosis (DDx). It is mos... more The systematic method used to identify diseases is called differential diagnosis (DDx). It is mostly used by healthcare professionals to diagnose a specific disease in a patient. If the disease is diagnosed, the method could be used to recommend the medications in order to receive treatment. The goal of the current paper is to design a system based on Semantic Web Technologies to develop a system with the capability to assist healthcare professionals regarding the possible medication or drug to prescribe, according to following fundamental selection criteria.

2007 Latin American Web Conference (LA-WEB 2007), 2007

Modern political life is heavily dependent and influenced by claims about facts made about partic... more Modern political life is heavily dependent and influenced by claims about facts made about participants in a Political System (seen here as sets of agents and organizations that govern a society). Such claims are commonly found in news stories, tweets, and social media postings, and, depending on each user, they may be considered “true” or “false”. The decision to act based on a fact contained in a claim is dependent on the agent’s trust on the claim, i.e., that the fact being stated is indeed “true”. In this paper, we propose a framework to describe the trust process, which can serve as a a support for various possible models of content trust. Within this framework, we present POLARE, an ontology to describe a Political System, which includes provenance information, and illustrate how it may provide information to feed the trust process in online news stories. As a case study, we illustrate the approach using a Knowledge Graph created with such claims, which can be queried in order...

Semantic Web Guideline, 2015

The intent of this guide is to introduce the basic concepts of the Semantic Web, as well as some ... more The intent of this guide is to introduce the basic concepts of the Semantic Web, as well as some examples of development environments and the implementation of applications for manipulating data published on the Web.

It was written to help readers understand this new universe that is emerging from the vast amount of data published daily on the Web, and to explain how to describe this information so that both people and machines can comprehend it.

Guía de La Web Semántica, 2015

Esta guía tiene el objetivo de ofrecer una base sobre los conceptos de la Web Semántica, además d... more Esta guía tiene el objetivo de ofrecer una base sobre los conceptos de la Web Semántica, además de ejemplos de algunos entornos de desarrollo e implementación de aplicaciones para la manipulación de datos publicados en la Web.

El documento fue redactado para permitir que el lector comprenda este nuevo universo construido sobre la base de la inmensa cantidad de datos publicados diariamente en la Web, y la idea de cómo describir esa información de modo que tanto las personas como las máquinas estén en condiciones de comprenderla.

Guia de Web Semântica, 2015

Este guia tem como objetivo fornecer uma base dos conceitos da Web Semântica, além de exemplos de... more Este guia tem como objetivo fornecer uma base dos conceitos da Web Semântica, além de exemplos de alguns ambientes de desenvolvimento e implementação de aplicações para a manipulação de dados publicados na Web. O documento foi redigido de forma a fazer o leitor compreender esse novo universo em torno da enorme quantidade de dados publicados diariamente na Web, e a ideia de como descrever essas informações de forma que tanto as pessoas como as máquinas possam compreendê-las.