The growing digitization and networking process within our society has a large influence on all aspects of everyday life. Large amounts of data are being produced permanently, and when these are analyzed and interlinked they have the potential to create new knowledge and intelligent solutions for economy and society. Big Data can make important contributions to the technical progress in our societal key sectors and help shape business. What is needed are innovative technologies, strategies and competencies for the beneficial use of Big Data to address societal needs.
The Big Data Europe project is an H2020 action which develops a big data infrastructure and applies it to the seven societal challenges of the H2020 programme:
The National and Kapodistrian University of Athens as a partner in Big Data Europe
Our group is the technical leader for the developments regarding the Security societal challenge. We work closely with the European Union Satellite Center (SatCen) and the Greek research center N.C.S.R. Demokritos to develop a change detection application which uses information from Sentinel satellite images and social media sources. The application is depicted in the following figure.
The change detection application is realized by two workflows. The change detection workflow uses satellite images to detect areas with changes in land cover or land use. The identified areas of interest are then associated with social media and news items and presented to the end user for cross validation. The event detection workflow works in the opposite direction: it is triggered by news and social media information about important events. When these events are localized in time and space, relevant Sentinel satellite images are acquired and processed in order to check for possible changes in land cover or land use.
The application utilizes the following Big Data technologies: News Crawler, Cassandra, Event Detector, Lookup Service, Sextant, SemaGrow, Strabon, GeoTriples, Image Aggregator, HDFS and Change Detector
The above change detection application is an illustration of the importance of data from the Copernicus programme of the European Commission for addressing societal challenges in Europe.
You can use the pilot by pressing this link.
After sign-up, send us an e-mail to give you access.
Feel free to contact us at: koubarak[at]di.uoa.gr, gioargyr[at]di.uoa.gr