Abstract

CAMARA, Jean H. S. et al. Evaluation of New VGI Quality Methods on the ClickOnMap Platform. RISTI [online]. 2019, n.35, pp.54-69. ISSN 1646-9895.  https://doi.org/10.17013/risti.35.54-69.

There has been great interest in the quality of collected data through Volunteered Geographic Information (VGI) systems, since they may be provided by untrained users when producing spatial data. When managing emergencies, e.g., natural catastrophes, VGI collection tools may be quickly developed through platforms, such as Ushahidi or ClickOnMap. Recently, new quality methods have been implemented on the ClickOnMap Platform, however, their efficiency had not yet been evaluated. Therefore, the aim of this study was to analyze the multiple quality methods of VGI on the ClickOnMap Platform. Thus, a system called “Gota D'água” (Drop of Water) was developed, which collected data on the subject “water waste in urban areas”. Through the analysis of the collected data, usage statistics, and responses to a questionnaire, it was possible to notice the influence of the quality methods on collaborations. The analysis showed that the employed methods are useful and crucial in the context of VGI, and their use is recommended in systems such as OpenStreetMap.

Keywords : VGI Quality; Volunteered Geographic Information; Crowdsourcing; ClickOnMap Platform; Collaborative mapping.

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