Today our world is awash in data and we live
in an Information Society where every action leaves a
 trace, generating massive amounts of data. Recent
scientific developments provide technologies to exploit 
these huge amounts of data and extract from it critical 
information. Used today in many commercial applications 
(marketing campaigns, user profiling and 
recommendations on e-commerce sites, web search, user 
communities), these technologies can also be used for 
security-critical  applications (fraud detection and money
 laundering, intrusions detection, intelligence gathering,
 terrorist  networks detection, Web surveillance).

It is the purpose of this workshop to review the various
 technologies available (data mining, social networks, 
search engines, crawling and indexing, text-mining, data
 streams) in the context of very large data sets.

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