L. Sarmento, S. Nunes, J. Teixeira and E. Oliveira IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology (WI-IAT’09), 15 – 18 September, 2009, Milano, Italy
Abstract: We propose an unsupervised method for propagating automatically extracted fine-grained topic labels among news items to improve their topic description for subsequent text classification procedure. This method compares vector representations of news items and assigns to each news item the label of its closest neighbour with a different topic label. Results obtained show that high precision can be achieved in propagating the top ranked topic label, and that 2-gram and 3-gram feature representations optimize the precision.
Abreu, J. F., Almeida, P., Pinto, R., and Nobre, V. 2009. Implementation of social features over regular IPTV stb. In Proceedings of the Seventh European Conference on European interactive Television Conference (Leuven, Belgium, June 03 – 05, 2009). EuroITV ’09. ACM, New York, NY, 29-32.
Abstract: Social TV research area has benefited in the late years from the dissemination of IPTV services and related technological possibilities. Features of presence, communication and recommendation have been proposed and are now more common in the prototypes being developed. However a high number of these experiments and proposals are not yet implemented over regular commercial IPTV platforms and can take some time to be available with a compelling graphical and interaction design. The Social TV application WeOnTV, covered in this paper, was developed in the staging platform of PT Inovação IPTV infrastructure. The work and evaluation so far showed promising results including a successful test over the MEO – IPTV commercial solution. The paper focuses on feasible approaches taken towards the interface design and implementation of WeOnTV’s social features, which can be useful as directions to other iTV developments over regular browser based set-top boxes.
T. Couto, C. Ribeiro and S. Nunes International AAAI Conference on Weblogs and Social Media (ICWSM’09), May 17 – 20, 2009, California, USA
Abstract: Over the years, blogs have become a popular and influent part of the web, having many distinctive features — they are usu- ally thematic and organized by communities, and their con- tents have a chronological order. In this paper, we present a characterization of the portuguese blogosphere based on a large set of portuguese blogs collected from multiple sources across a 5-year period. The extent of our collection allows us to draw some conclusions on the evolution of the blogging ac- tivity over the years. We survey and apply methods that have been used for web and blog characterization and, using sam- ples of blogs obtained from other sources, we try to estimate the extent to which this collection can be representative of the portuguese blogosphere. The paper presents multiple statis- tics that allow us to characterize the portuguese blogosphere and compare it to results obtained with other studies.
Santos, C. (2009). Actas da Conferência Challenges, VI Conferência Internacional de TIC na Educação, Aprendizagem (In)Formal na Web Social, 2009. Braga: C.C., 14 and 15 May, 2009. Nónio da Universidade do Minho, pp: 34-48.
Sumário: A utilização de serviços da Web Social ou Web 2.0 em contexto educativo tem vindo a revelar- se como uma prática com potencial para induzir transformações significativas nas metodologias de ensino utilizadas nas instituições de Ensino Superior. Investigações recentes têm demonstrado que a utilização destas ferramentas em contexto educativo potencia o desenvolvimento eficaz da comunicação, da partilha e da colaboração entre os membros de uma comunidade, contribuindo para a promoção de aprendizagens relevantes para os respectivos membros. Com o projecto SAPO Campus pretende-se desenvolver, disponibilizar e avaliar uma plataforma integrada de serviços Web 2.0, que promova a disseminação e facilite a utilização deste tipo de serviços em contextos de Ensino Superior. Neste documento apresenta-se o projecto SAPO Campus no que diz respeito à sua arquitectura e aos principais serviços integrados na plataforma.
Santos, C., Pedro, L. (2009). In A. Mendez Vilas et al. (Eds.), Research, Reflections and Innovations in V International Conference on Multimedia and Integrating ICT in Education, vol. 2. Badajoz, Spain: Formatex, 1104-1108. Lisboa, Portugal, 22-24 April 2009.
Abstract: Web 2.0 services educational use is an important pedagogical asset with potential to induce significant transformations in teaching methodologies applied by Higher Educations Institutions (HEIs). Recent research has demonstrated that the educational use of these tools has the potential to promote an effective development of communication, sharing and collaboration skills by learning communities’ members, contributing to more relevant learning experiences. It is intended with the project SAPO Campus to develop, launch and assess an integrated Web 2.0 services platform based in SAPO core technologies that may promote the aforementioned skills in Portuguese HEIs students in order to ease and to support these services use in Higher Education contexts.
SAPO campus platform offers a set of services and tools that, based in our experience, can represent a significant improvement in what the educational and focused use of these tools in HEI is concerned. In this paper we will present and discuss key-concepts underlying the SAPO Campus platform, the achieved solution regarding the architectural structure and the services being developed, and finally we will provide a short description for each aggregation service with a focus in its expected impact in educational contexts.
Santos, C., Pedro, L. (2009). In eLearn Magazine, 2009, 4 (April 2009). New York, USA: ACM.
Abstract: In 2005, a few months after Tim O’Reilly crafted the term Web 2.0 and the discussion about Web 1.0 vs Web 2.0 came up, James Snell from IBM wrote a short post explaining his view about the Web 2.0 concept. He used a short Unix/Linux command, chmod 777 Web, to convey the message that Web 2.0 is all about granting users full access privileges to the Web.
What would happen if we executed a chmod 777 education command to provide openness to education?
L. Sarmento and S. Nunes 4th Doctoral Symposium on Informatics Engineering (DSIE’09), February 2009, Porto, Portugal
Abstract: The explosive growth in information production poses increasing challenges to consumers, confronted with problems often described as “information overﬂow”. We present verbatim, a software system that can be used as a personal information butler to help structure and ﬁlter information. We address a small part of the information landscape, namely quotes extraction from portuguese news. This problem includes several challenges, speciﬁcally in the areas of information extraction and topic distillation. We present a full description of the problems and our adopted approach. verbatim is available online at http://irlab.fe.up.pt/p/verbatim.