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8 papers · 1 filter
POPmine: Tracking Political Opinion on the Web
Pedro Saleiro, Sílvio Amir, Mário J. Silva +1
The automatic content analysis of mass media in the social sciences has become necessary and possible with the raise of social media and computational power. One particularly promi…
Formalization of the pumping lemma for context-free languages
Marcus V. M. Ramos, Ruy J. G. B. de Queiroz, Nelma Moreira +1
Context-free languages (CFLs) are highly important in computer language processing technology as well as in formal language theory. The Pumping Lemma is a property that is valid fo…
Long-Range Trajectories from Global and Local Motion Representations
Eduardo M. Pereira, Jaime S. Cardoso, Ricardo Morla
Motion is a fundamental cue for scene analysis and human activity understan- ding in videos. It can be encoded in trajectories for tracking objects and for action recognition, or i…
Power Interference Modeling for CSMA/CA based Networks using Directional Antenna
Saravanan Kandasamy, Ricardo Morla, Manuel Ricardo
In IEEE 802.11 based wireless networks adding more access points does not always guarantee an increase of network capacity. In some cases, additional access points may contribute t…
Model-independent comparison of simulation output
Nuno Fachada, Vitor V. Lopes, Rui C. Martins +1
Computational models of complex systems are usually elaborate and sensitive to implementation details, characteristics which often affect their verification and validation. Model r…
Continuity as a computational effect
Renato Neves, Luis S. Barbosa, Dirk Hofmann +1
The original purpose of component-based development was to provide techniques to master complex software, through composition, reuse and parametrisation. However, such systems are…