User-generated content is a valuable source of information whose production increases
year after year. Twitter data is a form of user-generated content that is frequently adopted to …

Rapid estimates of impact areas following large earthquakes constitute the cornerstone of
emergency response scenarios. However, collecting information through traditional …

Real applications like crisis management require the real time awareness of critical
situations. However, the services using traditional methods like phone calls can be easily …

Analysts wish to explore different hypotheses, organize their thoughts into visual narratives
and present their findings. Some developers have used algorithms to ascertain key events …

Nowadays, with the increasing attention being paid to social media, a huge number of
georeferenced documents, which include location information, are posted on social media …

Microblogs allow users to publish geo-tagged posts---short textual messages assigned to a
geographic location. Users send posts from places they visit and discuss an idiosyncratic …

Online social networks like Twitter have emerged as the most popular way to discuss what is
happening about real-world events. The topics related to the event may change over time …

Abstract ETL (Extraction-Transform-Load) tools, traditionally developed to operate offline on
historical data for feeding Data-warehouses, need to be enhanced to deal with big and fresh …

Recently, various SNSs (social networking services) such as Twitter1, Facebook2, and so
on, have gained wide use. These enable access to a wide rage of information related to the …

In e-Science, many scientific workflow management systems have been developed to
integrate distributed computation resources, data sets, and mining algorithms. Users usually …