Mari Vallez

Mari Vallez
University of Barcelona | UB · Department of Librarianship, Information Science and Audiovisual Communication

PhD in Social Communication

About

49
Publications
10,483
Reads
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160
Citations
Additional affiliations
September 2019 - present
University of Barcelona
Position
  • Lecturer
Description
  • Lecturer in Library & Information Science and Communication. University of Barcelona (UB)
September 2019 - present
University of Barcelona
Position
  • Researcher
September 2006 - September 2019
Universitat Pompeu Fabra
Position
  • Researcher
Description
  • Recent research focuses on proposals to indexing documents. The first uses semi-automatic indexing techniques based on aspects of SEO. The second is a model for updating controlled vocabularies from the processing of search logs made on search engines.
Education
March 2010 - December 2015
University Pompeu Fabra
Field of study
  • Communication
September 2005 - June 2008
University of Alicante
Field of study
  • Information Science
September 1999 - June 2003
Universitat Oberta de Catalunya
Field of study
  • Library & Information Science

Publications

Publications (49)
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
The growth of fake news is nowadays a growing reality, leading to users feeling insecure when consuming information. Text-based news is perhaps the most manipulated, but the video is rapidly gaining ground. Technology allows content to be easily adulterated, leading users to become misinformed. In this study, we explain the different image, video,...
Article
El crecimiento de las noticias falsas provoca en los usuarios inseguridad cuando consumen información. Siendo los formatos de noticias de tipo de textual quizás los más extendidos, el vídeo está irrumpiendo con fuerza y se ha transformado en contenido informativo que puede manipularse llevando a la desinformación de los usuarios. En este artículo s...
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
Abstract: The principal goal of the research study is to analyze the transparency of a selection of academic journals based on an analysis model with 20 indicators grouped into 6 parameters. Given the evident interest in and commitment to transparency among quality academic journals and researchers' difficulties in choosing journals that meet a set...
Article
Full-text available
La pandemia derivada de la COVID-19 ha afectado a todos los sectores de nuestra sociedad; desde la economía a la cultura, pasando por la educación o el tema crítico de la salud. El tratamiento de la prensa de un país puede ser un buen indicador para saber cuáles son las preocupaciones y los intereses de los ciudadanos. Siguiendo ese indicador, el o...
Article
Full-text available
This article comparatively analyzes the web visibility of 20 libraries corresponding to the top 10 universities in the Times Higher Education World University Rankings and the 10 largest Spanish universities, and explores whether a correlation exists between the web visibility of libraries and of their respective universities. To study web visibili...
Article
Full-text available
Computational journalism has burst into the intense panorama of journalistic innovations, due to its great impact potential on newsrooms. Given the recent implantation of this specialty, still in the experimental phase in the newsrooms that have incorporated it, in this work we present an exploratory result on computational journalism, at the same...
Technical Report
Full-text available
Presentación de un sistema de análisis de la interactividad, la buscabilidad y la visibilidad de la información en sitios web de medios de comunicación (cibermedios). El motivo de centrarnos en estas dimensiones se corresponde con el hecho de que, a igualdad de otros factores de índole periodística (esto es, suponiendo una cierta calidad periodíst...
Conference Paper
Full-text available
La present comunicació descriu l'experiència de la Biblioteca de la UOC en la formació dels doctorands. La formació és un dels serveis que tradicionalment ofereixen les biblioteques. Aquest servei s'ha especialitzat segons el públic a qui s'adreça. A priori els tres perfils principals són: estudiants, professorat, i investigadors. No obstant cal in...
Thesis
Full-text available
La ingente cantidad de información que existe actualmente hace necesario el desarrollo de herramientas, métodos y procesos que faciliten el acceso a la misma. Especialmente, se requieren sistemas de información que sean eficientes y precisos. Las técnicas de indexación cuentan con una larga tradición en este ámbito. Sin embargo, su aplicación a gra...
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...
Conference Paper
Full-text available
Poster presented in the LIBER 43rd Annual Conference. It is shown the tool "High-impact open access journals ¿" created by the Library of the Universitat Oberta de Catalunya. The tool gives access to open access journals listed in the Directory of Open Access Journals (DOAJ) with impact factor in the Journal Citation Reports 2011 or SCImago Journal...
Conference Paper
Full-text available
The mission guiding the UOC Library Services for Research team is to establish and offer useful, relevant and sustainable research support services - services that cover all the different user needs in the research environment (doctoral students, researchers, faculty, vice president and visiting scholars) - and to improve the Library's coordination...
Article
Full-text available
L'article presenta les característiques i funcionalitats principals de les eines MetaLib i SFX, programaris per a la gestió i accés als recursos electrònics. S'analitzen els programaris citant els diferents tipus de funcionalitats, i la gestió i el manteniment. El procés s'emmarca en l'experiència de la Universitat Oberta de Catalunya, membre del C...
Article
Full-text available
Aims. To present the tools known as Keyword Research Tools, which are frequently used in SEO and SEM to identify keywords that can help a website to improve its position on search engines. Methodology. The main tools in Keyword Research are analyzed – some of them integrated into sophisticated marketing platforms, while others are freely available....
Article
Full-text available
Aims. To present the tools known as Keyword Research Tools, which are frequently used in SEO and SEM to identify keywords that can help a website to improve its position on search engines. Methodology. The main tools in Keyword Research are analyzed – some of them integrated into sophisticated marketing platforms, while others are freely available....
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
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...
Conference Paper
Full-text available
Peer-reviewed The aim of the paper is to describe a study into the necessary requirements for libraries' online training materials and to relate the pilot test undertaken to create a series of teaching materials in video format at the Universitat Oberta de Catalunya (Open University of Catalonia, UOC). The starting point for the study is the need t...
Article
Full-text available
L'article presenta les característiques i funcionalitats principals de les eines MetaLib i SFX, programaris per a la gestió i accés als recursos electrònics. S'analitzen els programaris citant els diferents tipus de funcionalitats, i la gestió i el manteniment. El procés s'emmarca en l'experiència de la Universitat Oberta de Catalunya, membre del C...
Article
Full-text available
This article presents the main characteristics and functions of the e-resource management and access tools MetaLib and SFX. Both applications are analysed and their functions and their operating procedures are explained. The article outlines the experience of the Universitat Oberta de Catalunya (Open University of Catalonia, UOC), a member of the C...
Chapter
Full-text available
La implantación de la web semántica frente a la actual web supone un cambio de paradigma, ya que tiene que pasarse de una web basada y creada en lenguaje natural a una web estructurada y organizada, donde los contenidos etiquetados semánticamente serán el elemento principal. Este cambio supondrá una nueva filosofía y forma de trabajar, ya que el de...
Article
Full-text available
L'article presenta les característiques i funcionalitats principals de les eines MetaLib i SFX, programaris per a la gestió i accés als recursos electrònics. S'analitzen els programaris citant els diferents tipus de funcionalitats, i la gestió i el manteniment. El procés s'emmarca en l'experiència de la Universitat Oberta de Catalunya, membre del C...
Article
El artículo presenta las principales características y funcionalidades de las herramientas MetaLib y SFX, programas para la gestión y acceso a los recursos electrónicos. Se analizan ambos programas y se citan los diferentes tipos de funcionalidades, y su gestión y mantenimiento. El proceso se enmarca en la experiencia de la Universitat Oberta de Ca...
Article
Full-text available
This article presents the main characteristics and functions of the e-resource management and access tools MetaLib and SFX. Both applications are analysed and their functions and their operating procedures are explained. The article outlines the experience of the Universitat Oberta de Catalunya (Open University of Catalonia, UOC), a member of the C...
Article
Full-text available
L'article presenta les característiques i funcionalitats principals de les eines MetaLib i SFX, programaris per a la gestió i accés als recursos electrònics. S'analitzen els programaris citant els diferents tipus de funcionalitats, i la gestió i el manteniment. El procés s'emmarca en l'experiència de la Universitat Oberta de Cat...
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
Full-text available
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
L'article presenta les característiques i funcionalitats principals de les eines MetaLib i SFX, programaris per a la gestió i accés als recursos electrònics. S'analitzen els programaris citant els diferents tipus de funcionalitats, i la gestió i el manteniment. El procés s'emmarca en l'experiència de la Universitat Oberta de Catalunya, membre del C...
Article
El artículo presenta las principales características y funcionalidades de las herramientas MetaLib y SFX, programas para la gestión y acceso a los recursos electrónicos. Se analizan ambos programas y se citan los diferentes tipos de funcionalidades, y su gestión y mantenimiento. El proceso se enmarca en la experiencia de la Universitat Oberta de Ca...
Article
Full-text available
The Universitat Oberta de Catalunya (Open University of Catalonia, UOC) Library has offered its services online since its creation in 1995. As a result, the Library has shown a strong commitment to new technologies throughout this time. This article offers a brief look at the library's evolution, describing the pioneering way in which the library s...
Article
Full-text available
En este artículo se presenta un proyecto de investigación que tiene como principal objetivo el desarrollo y la exploración del potencial de una herramienta que facilite la asignación semi automática de palabras clave a documentos web. Se describen de forma sintética las principales características y prestaciones de la herramienta que se está constr...

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