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In contrast to photo-based VGI (e.g. Flickr) the correlation between the place where an information has been created and what the information is about is less intuitive for text-based VGI. In order to gain more insight into the relationship between text information generated in mobile contexts (e.g. via smartphones) and their recorded location, research has [...]

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Not just LiDAR sensors, but also social media sources produce point clouds. We compiled two new visualisations showing spatiotemporal Twitter Tweet locations.
One of them is centered at MaracanĂ£ stadium during the football world cup 2014. The point cloud allows seeing various games that appear in the form of pronounced discs. In the centre of these [...]

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The growing number of mobile devices equipped with GPS sensors having broadband internet access, allow users to actively participate and create content through mobile applications and location based services. Whether users are uploading geotagged photos via Flickr or Instagram, checking in at a venue with Foursquare or commenting on a local event via [...]

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