Find Your Way Back: Mobility Profile Mining with Constraints

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TitleFind Your Way Back: Mobility Profile Mining with Constraints
Publication TypeConference Paper
Year of Publication2015
AuthorsKotthoff, L, Nanni, M, Guidotti, R, O'Sullivan, B
Conference NamePrinciples and Practice of Constraint Programming
PublisherSpringer International Publishing
Conference LocationCork
AbstractMobility profile mining is a data mining task that can be formulated as clustering over movement trajectory data. The main challenge is to separate the signal from the noise, i.e. one-off trips. We show that standard data mining approaches suffer the important drawback that they cannot take the symmetry of non-noise trajectories into account. That is, if a trajectory has a symmetric equivalent that covers the same trip in the reverse direction, it should become more likely that neither of them is labelled as noise. We present a constraint model that takes this knowledge into account to produce better clusters. We show the efficacy of our approach on real-world data that was previously processed using standard data mining techniques.
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