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Le vandalisme de l’information géographique volontaire : analyse exploratoire et proposition d’une méthodologie de détection automatique

Abstract : The quality of Volunteered Geographic Information (VGI) is currently a topic that question spatial data users as well as authoritative data producers who are willing to exploit the benefits of crowdsourcing. Contrary to most authoritative databases, the advantage of VGI provides open access to spatial data. However, VGI is prone to errors, even to deliberate defacement perpetrated by ill-intended contributors. In the latter case, we may speak of cartographic vandalism of carto-vandalism. This phenomenon is one the main downsides of crowsdsourcing, and despite the small amount of incidents, it may be a barrier to the use of collaborative spatial data. This thesis follows an approach based on VGI quality -- in particular, the objective of this work is to detect vandalism in spatial collaborative data. First, we formalize a definition of the concept of carto-vandalism. Then, assuming that corrupted spatial data come from malicious contributors, we demonstate that qualifying contributors enables to assess the corresponding contributed data. Finally, the experiments explore the ability of learning methods to detect carto-vandalism
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Thérèse Quy Thy Truong. Le vandalisme de l’information géographique volontaire : analyse exploratoire et proposition d’une méthodologie de détection automatique. Sciences de l'information et de la communication. Université Paris-Est, 2020. Français. ⟨NNT : 2020PESC2009⟩. ⟨tel-02928979⟩

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