Luís Miguel Cabral

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I propose a new solution concept–behavioral equilibrium–to study environments with players who are naive, in the sense that they fail to account for the informational content of other players'actions. A behavioral equilibrium requires that: (i) players have no incentives to deviate given their beliefs about the consequences of deviating; (ii) these beliefs(More)
In this paper we provide a full overview of GikiCLEF, an evaluation contest (track) that was specifically designed to expose and investigate cultural and linguistic issues involved in multimedia collections and searching. In GikiCLEF, 50 topics were developed by a multilingual team with non-English users in mind. Answers should be found in Wikipedia, but(More)
In this paper we describe GikiCLEF, the first evaluation contest that, to our knowledge, was specifically designed to expose and investigate cultural and linguistic issues involved in multimedia collections and searching, and which was organized under the scope of CLEF 2009. We present the task, its motivation, the results of the participants and the GIRA(More)
Merging different runs by analysing the result (3 to 6 runs) ¾Number of times an answer occurs in the results ¾The relevance of the support snippet regarding the question text ¾Automatic Selection achieves 55%-69% of the correct answers in the best possible selection ¾Combination of several runs did not produce better results than some of the individual(More)
  • Luís Cabral, Gabriel Natividad, Cabral, Paganelli-Bull, Matt Grennan, Julie Holland Mortimer +1 other
  • 2013
We argue that the home video industry is subject to significant cross-selling effects: an increase in the demand for a studio's title leads to an increase in that studio's sales of other titles. We argue that, differently from previous studies of cross-selling effects, these spillovers are due to a supply-side, rather than demand-side, mechanism: by means(More)
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