22-03-2018
CrisMap: a Big Data Crisis Mapping System Based on Damage Detection and Geoparsing
Published in: Information Systems Frontiers | Issue 5/2018
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Abstract
CrisMap
, a Big Data crisis mapping system capable of quickly collecting and analyzing social media data. CrisMap
extracts potential crisis-related actionable information from tweets by adopting a classification technique based on word embeddings and by exploiting a combination of readily-available semantic annotators to geoparse tweets. The enriched tweets are then visualized in customizable, Web-based dashboards, also leveraging ad-hoc quantitative visualizations like choropleth maps. The maps produced by our system help to estimate the impact of the emergency in its early phases, to identify areas that have been severely struck, and to acquire a greater situational awareness. We extensively benchmark the performance of our system on two Italian natural disasters by validating our maps against authoritative data. Finally, we perform a qualitative case-study on a recent devastating earthquake occurred in Central Italy.