Rafael Pedraza-Jimenez

Rafael Pedraza-Jimenez
University Pompeu Fabra | UPF · Department of Communication

PhD in Information Science

About

77
Publications
15,478
Reads
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720
Citations
Citations since 2016
22 Research Items
411 Citations
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Introduction
I'm Associate Professor - Serra Húnter fellow - in the Department of Communication at Pompeu Fabra University. Member of several research teams and projects.
Additional affiliations
November 2017 - present
University Pompeu Fabra
Position
  • Professor (Associate)
September 2006 - present
University Pompeu Fabra
Position
  • Lecturer - Coordinator of the DigiDoc Research Group
Position
  • Semantic Web
Education
January 2001 - January 2006
Universidad Carlos III (Madrid)
Field of study
  • Teaching assistant and Ph.D. Student at Signal Processing and Communications Department
September 1998 - June 2000
University of Granada
Field of study
September 1995 - June 1998
University of Granada
Field of study

Publications

Publications (77)
Article
Full-text available
We present a method or system for the analysis and evaluation of content curation in the digital media, which we call the Curation Analysis System (CAS). The system comprises two main dimensions – namely, Curation and Content – which, in turn, are made up of a series of parameters and indicators to which we assign a score. Each parameter is describ...
Article
Full-text available
Purpose Universities play an important role in the promotion and implementation of the 2030 Agenda for Sustainable Development. This study aims to examine the visibility of information about the Sustainable Development Goals (SDGs) on the websites of Spanish and major international universities, by means of a quantitative and qualitative analysis w...
Article
Full-text available
Introducción: En el contexto de la pérdida de confianza hacia los contenidos en internet, la desinformación, las noticias falsas y la crisis financiera que afecta a la prensa a escala global, se revisan los estudios que proponen instrumentos dedicados a evaluar los sitios web de los medios digitales. Objetivos: Identificar y caracterizar los trabaj...
Technical Report
Full-text available
This research proposes a protocol of action for the performance of cultural and museum studies with minors in the context of COVID-19, which helps, first, to safeguard minors in focus groups, interviews, and participant observation and, second, to ensure that the research is successful. Development of the protocol entailed a systematised review fea...
Article
Full-text available
The objective of this study is twofold: on the one hand, to define the concepts related to communication, dissemination and exploitation of results in the context of research and innovation in the European science and innovation system. On the other hand, propose conceptual tools that help research teams to devise, plan, implement and evaluate effe...
Article
Full-text available
El artículo presenta un método o sistema para el análisis y la evaluación de la curación de contenidos en medios de comunicación digitales. Este sistema se basa en dos dimensiones (Curación y Contenido) que agrupan una serie de parámetros e indicadores a los cuales se les ha asignado una puntuación. Para cada parámetro se señalan los siguientes ele...
Article
Full-text available
News curation by email: Analysis of the Spanish journalistic newsletters Curación de noticias en el correo electrónico: análisis de newsletters periodísticas españolas Javier Guallar. University of Barcelona. Spain jguallar@ub.es [CV] Laura Anton. Betevé. Spain. lanton@beteve.cat [CV] Rafael Pedraza-Jiménez. Pompeu Fabra University. Spain. rafael.p...
Article
Full-text available
Hipertext.net presenta un número especial dedicado a la COVID-19 y la comunicación. Se trata de un monográfico que queremos que sea especial en muchos sentidos. En primer lugar, por la temática, pues, aunque ya se ha escrito mucho sobre la pandemia, queda muchísimo por investigar sobre sus efectos y repercusiones en el ámbito de la comunicación. Q...
Article
Full-text available
Existen diversos métodos y herramientas para la evaluación de la calidad web que se han propuesto durante los últimos años. Son instrumentos que tienen su origen tanto en el contexto académico como profesional. Algunos son de carácter generalista y permiten evaluar cualquier tipo de sitio web, mientras que otros están especializados en sectores esp...
Article
Full-text available
A range of different methods and tools have been proposed by both academics and professionals in recent years for evaluating the quality of websites. Some are of general application and can be used to assess any type of website, while others have been adapted to the specialized characteristics of the websites employed in a given sector. This paper...
Article
A new analysis system for website quality evaluation is presented. It is characterized by its potential to interrelate and evaluate both technical and strategic aspects of a website. It has its origin in the premise that, although the technical aspects, which determine the website operability and functionality, have a great impact on its quality, t...
Article
Full-text available
Tourist destination managers must design effective communication strategies as part of their promotional tasks. In order to do so, destinations need to know what sources of information tourists actually use during the stages of a trip. Previous studies have partially addressed this issue but only used a limited list of sources analysed or only focu...
Article
Full-text available
The Spanish general elections of 20 December 2015 and 26 June 2016, which can be understood as an electoral continuum, were notable for being the first case of a repeated election in Spain's history, the consequence of the difficulty in forming a government due to the emergence of two new political forces, Podemos and Ciudadanos, led by Pablo Igles...
Article
Full-text available
[Spanish+English] SP: A partir del denominado Canvas Model, se propone un modelo para la ideación estratégica de sitios web. Consiste en una herramienta visual, que hemos denominado WebSite Canvas Model, que permite identificar los aspectos clave de la estrategia de un sitio web, representándolos de forma sintetizada en un lienzo o canvas. En este...
Chapter
Newsonomics, the discipline founded by Ken Doctor, expert news media analyst, examines the trends characterizing the transformation of journalism in the digital age. In this chapter, we focus our attention on some of these tendencies in our critical analysis of the sustainability of the firms in this industry that have opted to innovate and invest...
Chapter
Newsonomics, the discipline founded by Ken Doctor, expert news media analyst, examines the trends characterizing the transformation of journalism in the digital age. In this chapter, we focus our attention on some of these tendencies in our critical analysis of the sustainability of the firms in this industry that have opted to innovate and invest...
Technical Report
Full-text available
La distribución actual de noticias periodísticas tiene lugar a través de diversas plataformas, entre las cuales la página web del medio en cuestión es solamente una de ellas. Dicho de otro modo, los destinatarios de la producción periodística, los ciudadanos que desean informarse de su entorno, acceden a las noticias de actualidad tanto desde las p...
Technical Report
Full-text available
The dissemination of news stories today takes place via various platforms, among which news media websites are just one. In other words, the audience for journalistic content, that is, those people who wish to be informed about the world around them, access news stories via the results pages of search engines as well as via social networks, and not...
Article
Purpose – Controlled vocabularies play an important role in information retrieval. Numerous studies have shown that conceptual searches based on vocabularies are more effective than keyword searches, at least in certain contexts. Consequently, new ways must be found to improve controlled vocabularies. The purpose of this paper is to present a semi-...
Article
Purpose – The purpose of this paper is to describe and evaluate the tool DigiDoc MetaEdit which allows the semi-automatic indexing of HTML documents. The tool works by identifying and suggesting keywords from a thesaurus according to the embedded information in HTML documents. This enables the parameterization of keyword assignment based on how fre...
Article
Some of the most attractive economies are located in emerging markets. In this sense, China is one of the most attractive markets in the world. The Web, especially social media, is a platform that can be used to penetrate these markets. Yet, many local and multinational enterprises, particularly the latter, know little about the relationship betwee...
Technical Report
Full-text available
El “Sistema Articulado de Análisis de Cibermedios” (SAAC) consiste en un grupo de conceptos, presentados a través de una propuesta terminológica concreta, y por un grupo de elementos articulados que nos permiten llegar a lo que llamamos el qué (parámetros) y el cómo (indicadores) de cualquier futuro estudio sobre cibermedios. Presentación detallada...
Article
Website requirements specification (WRS) is a document that describes the characteristics expected of a web site to be developed or modified, in order to ensure compliance. This is particularly important when site development is outsourced. This paper analyzes in detail the procedure for processing, structure and validation, with special attention...
Article
Full-text available
The World Wide Web has become the primary instrument used by tourists in order to search for information. As a result, tourism websites pertaining to destinations need to be appealing and must convey their brand image in an appropriate, effective manner. However, there is no methodology in place to assess the quality and communicative effectiveness...
Article
Full-text available
Due to the increasing adaptation made by the mass media to the Web scenario, there is need for a methodology to allow us to analyze and evaluate the quality of news websites. Based on a study of the characteristics of the websites of the major news media, this article proposes a specific methodology for the evaluation of this sort of website. The p...
Article
Full-text available
Since the (re)appearance of ontologies in the late nineties, there is a debate about the relationship between thesauri and ontologies. This article presents a synthesis of this debate, focusing on the use of these tools in the information systems area, which is the best one to compare both technologies, utilizing the concept of document description...
Conference Paper
Full-text available
This paper analyzes and evaluates, in the context of Ontology learning, some techniques to identify and extract candidate terms to classes of a taxonomy. Besides, this work points out some inconsistencies that may be occurring in the preprocessing of text corpus, and proposes techniques to obtain good terms candidate to classes of a taxonomy.
Article
Full-text available
We present a research project whose main objective is the development of a tool that facilitates the assignment of keywords to web documents. We synthesize the main characteristics and features of the tool we are constructing and analyze its theoretical basis. This line of research is motivated by the current interest in semantic technologies as a...
Article
Full-text available
Study of ranking in Google and Yahoo of big Spanish municipal corporation websites while searching by city tourist brand. Analysis of whether city tourist brands are promoting properly in the internet. Results of the daily ranking monitoring in Google and Yahoo are shown, for the searches made in 2009 by touristic brands of Spanish provincial capit...
Article
Full-text available
We present a research project whose main objective is the development of a tool that facilitates the assignment of keywords to web documents. We synthesize the main characteristics and features of the tool we are constructing and analyze its theoretical basis. This line of research is motivated by the current interest in semantic technologies as a...
Article
Full-text available
A model is proposed for analyzing online journalism from the perspective of suitability for certain quality parameters and, especially, in relation to certain indicators on the adoption of the characteristic features of web 2.0. This model has been tested with the analysis of eight online newspapers and the results are presented. The model has a mo...
Conference Paper
Full-text available
En un contexto de creciente competitividad y popularización del uso de la Web, los destinos deben contar con una presencia virtual adecuada, y ello pasa especialmente por el diseño y mantenimiento de un sitio web capaz de comunicar a los públicos diversos las fortalezas de la marca. Según la literatura académica reciente, se hace necesario trabajar...
Conference Paper
Full-text available
El nuevo escenario digital está modificando la forma en que los medios tradicionales se relacionan con su audiencia y, por consiguiente, la base sobre la que se sustenta la teoría de la agenda-setting. Internet ofrece la oportunidad de superar el carácter monológico del proceso comunicativo y abre la puerta a la participación del público. Este trab...
Article
Full-text available
Public administration in the developed countries is designing information initiatives to manage risk information using web-based systems. These sites are intended to deliver information to citizens, but also have valuable information for experts and authorities. Five web sites are compared and a simple methodology is provided to extract conclusions...
Article
Full-text available
In this paper we present the theoretical and methodological foundations for the development of a multi-agent Selective Dissemination of Information (SDI) service model that applies Semantic Web technologies for specialized digital libraries. These technologies make possible achieving more efficient information management, improving agent–user commu...
Article
Este capítulo proporciona una introducción a algunos de los principales lenguajes de marcado para la descripción de recursos. Centra su atención especialmente en aquellos lenguajes relevantes para el ámbito de la Documentación, y siempre en relación con la Web semántica. Así, se describen aquí XML, Dublin Core, RDF, OWL, SKOS-Core, RSS y Atom. Por...
Conference Paper
Full-text available
The aim of this paper is to analyze the current state of online newspapers, focusing on their adapta tion to the Web 2.0 scenario. To carry out this work, we have studied several variables like: the sort of tools that online newspapers have added to their websites from the Social Web, the way these tools have changed the creation process of newspap...
Article
Full-text available
Public administration in the developed countries is designing information initiatives to manage risk information using web-based systems. These sites are intended to deliver information to citizens, but also have valuable information for experts and authorities. Five web sites are compared and a simple methodology is provided to extract conclusions...
Conference Paper
This work briefly analyses the difficulties to adopt the Semantic Web, and in particular proposes systems to know the present level of migration to the different technologies that make up the Semantic Web. It focuses on the presentation and description of two tools, DigiDocSpider and DigiDocMetaEdit, designed with the aim of verifYing, evaluating,...
Article
Full-text available
Six topics related to search engines and web positioning such as: -- Structure and functions of a search engine -- The life cycle of a web campaign positioning -- Fundamentals of Marketing in search engines -- Technological monitoring and competitive intelligence for SEO-SEM -- Search engines and presentation of results in group -- Looking for maps...
Article
Full-text available
This article aims to review the main characteristics of natural language processing techniques, focusing on its application in information retrieval and related topics. (Este artículo tiene por objeto hacer una revisión de las principales características de las técnicas de procesamiento del lenguaje natural , centrándose en su aplicación a la recup...
Article
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This article is a review of the main characteristics of natural language processing techniques, focusing on its application to information retrieval and related areas.
Article
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The lack of a well defined model of information representation on the web has produced several problems related to processing information. In an effort to resolve these problems, the W3C has proposed the semantic web project. This new scenario offers both possibilities and difficulties for the future. Special attention is given to ontologies, funda...
Conference Paper
Full-text available
We introduce in this paper a new experimental design for the supervised clustering of retrieval results to replace rankings. The technique is a mixture of soft and hard techniques built on top of Formal Concept Analysis and a generalisation of the fuzzy semiring, idempotent reflexive semirings. We present first results as to the theoretical design...
Article
Los procesos de toma de decisión han alcanzado un gran desarrollo en el entorno Web, en particular en la recuperación de información y el comercio electrónico. No obstante, la carencia de un modelo de datos bien definido en la misma ha traído consigo problemas de difícil solución. En este trabajo enunciamos algunos de estos problemas, y describimos...
Conference Paper
Full-text available
The paper deals with personalization of navigation in the educational content, introduced in a competence-based instructional design system InterMediActor. The system constructs an individualized navigation graph for each student and thus suggests the learning objectives the student is most prepared to attain. The navigation tools rely on the graph...
Article
Full-text available
This paper describes a failure alert system and a methodology for content reuse in a new instructional design system called InterMediActor (IMA). IMA provides an environment for instructional content design, production and reuse, and for students’ evaluation based in content specification through a hierarchical structure of competences. The student...
Conference Paper
Full-text available
The paper presents a competence-based instructional design system and a way to provide a personalization of navigation in the course content. The navigation aid tool builds on the competence graph and the student model, which includes the elements of uncertainty in the assessment of students. An individualized navigation graph is constructed for ea...
Article
Full-text available
This paper describes the basic architecture and functional principles of a new instructional design system called InterMediActor (IMA) and reports about its implementation state. IMA provides an environment for instructional content design, production and reuse and for student evaluation that is based on the decomposition of the learning objectives...
Article
The paper presents a competence-based instructional design system and a way to provide a personalization of navigation in the course content. The navigation aid tool builds on the competence graph and the student model, which includes the elements of uncertainty in the assessment of students. An individualized navigation graph is constructed for ea...
Conference Paper
Full-text available
Se propone un nuevo mecanismo para la búsqueda y recuperación de imágenes basado en realimentación de relevancia. La arquitectura propuesta se compone de una red neuronal y un tesauro. La red neuronal extrae de las imágenes dos parámetros: textura y color. El tesauro recoge las relaciones semánticas existentes entre los términos descriptores de las...
Conference Paper
This paper describes the basic architecture and functional principles of a new instructional design system called InterMediActor (IMA). IMA provides an environment for instructional content design, production and reuse and student evaluation that is based on the decomposition of the learning objectives in a hierarchical structure of competences. Th...
Article
Full-text available
A model is proposed for analyzing online journalism from the perspective of suitability for certain quality parameters and, especially, in relation to certain indicators on the adoption of the characteristic features of web 2.0. This model has been tested with the analysis of eight online newspapers and the results are presented. The model has a mo...
Conference Paper
Full-text available
Student guidance is an always desired characteristic in any educational system, but it represents special difficulty if it has to be deployed in an automated way to fulfil such needs in a computer supported educational tool. In this paper we explore possible avenues relying on machine learning techniques, to be included in a near future -in the for...
Conference Paper
Full-text available
Computer based training or distance education are facing dramatic changes with the advent of standardization efforts, some of them concentrating in maximal reuse. This is of paramount importance for a sustainable -cost affordable- production of educational materials. Reuse in itself should not be a goal, though, since many methodological aspects mi...