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GIScience Blog

Tag: Twitter

  • Enrico Steiger defends PhD on Explorative Spatial & Temporal Human Mobility Analysis from User-Generated Data

    today Enrico Steiger successfully defended his PhD thesis about “Explorative Spatial and Temporal Human Mobility Analysis from User-Generated Data” at GIScience Heidelberg University. The massive amount of pervasive, user-generated data creates new possibilities to discover and utilize geographic information. Tied in with this novel role of actively participating users, is a growing research challenge where…

  • An Advanced Systematic Literature Review on Spatiotemporal Analyses of Twitter Data

    Recently an Advanced Systematic Literature Review on Spatiotemporal Analyses of Twitter Data has been conducted and the results have been published online as journal article. This article presents a systematic literature review on the state of research concerning methodologies, applications and use cases of Twitter as a Location-Based Social Network. The proposed systematic literature review…

  • Combining Social Media and Authoritative Data towards identifying useful Information for Disaster Management

    A Study on the Twitter usage in the River Elbe Flood of June 2013 In recent years, social media emerged as a potential resource to improve the management of crisis situations such as disasters triggered by natural hazards. Although there is a growing research body concerned with the analysis of the usage of social media…

  • Twitter location (sometimes) matters

    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…

  • Twitter Point Clouds

    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 Maracanã 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…

  • Analyzing public transport flows from uncertain social media

    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 Twitter. These…