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It has been shown that the difference of squares cost function used by standard realignment packages (SPM and AIR) can lead to the detection of spurious activations, because the motion parameter estimations are biased by the activated areas. Therefore, this paper describes several experiments aiming at selecting a better similarity measure to drive(More)
This paper proposes that computer games development, in spite of its inherently creative and innovative nature, is subject of systematic industrialization targeted at predictability and productivity. The proposed approach encompasses visual domain-specific languages, semantic validators and code generators to make game developers and designers to work more(More)
This study examined emergent coordination processes in collective patterns of behavior in 3 vs 3 sub-phases of the team sport of association football near the scoring zone. We identified coordination tendencies for the centroid (i.e., team center) and surface area (i.e., occupied space) of each sub-group of performers (n=20 plays). We also compared these(More)
Designing the behavior of non-player characters that challenges the human player adequately is both a key feature and a big concern in computer games development. This work presents a reinforcement learning (RL) based technique to build intelligent agents that automatically control the game difficulty level, adapting it to the human player's skills in order(More)
In this work, we present a neural network (NN) based method designed for 3D rigid-body registration of FMRI time series, which relies on a limited number of Fourier coefficients of the images to be aligned. These coefficients, which are comprised in a small cubic neighborhood located at the first octant of a 3D Fourier space (including the DC component),(More)
The construction of concurrent programs is especially complex due mainly to the inherent non-determinism of their execution, which makes it difficult to repeat test scenarios. Process algebras have been used to design and reason about these programs. This paper presents an approach to developing concurrent programs using a set of process algebra constructs(More)
In this paper, we show that the standard point of view of the neuroimaging community about fMRI time series alignment should be revisited to overcome the bias induced by activations. We propose to perform a two-stage alignment. The first motion estimation is used to infer a mask of activated areas. The second motion estimation discards these areas during(More)