We present a data model for movies and movie databases. A movie is considered to be a 2-dimensional semialgebraic figure that can change in time. We give a number of computability results concerning movies: it can be decided whether a frame of a movie is only a topologically transformation of another frame; a movie has a finite number of scenes and cuts and these can be effectively computed. Ba...

Sentiment analysis is becoming one of the most active area in Natural Language Processing nowadays. Its importance coincides with the growth of social media and the open space they create for expressing opinions and emotions via reviews, forum discussions, microblogs, Twitter and social networks. Most of the existing approaches on sentiment analysis rely mainly on the presence of affect words t...