Department of Information Technology, Ghent University - iMinds, Ghent, Belgium. jimmy.vandeneynden@intec.ugent.be.|Department of Information Technology, Ghent University - iMinds, Ghent, Belgium. carolina.fierro@intec.ugent.be.|Department of Information Technology, Ghent University - iMinds, Ghent, Belgium. lieven.verbeke@intec.ugent.be.|Department of Information Technology, Ghent University - iMinds, Ghent, Belgium. kathleen.marchal@intec.ugent.be.