2013 Volume 55 Issue 10 Pages 705-711
“Big data” has increasingly attracted our attention as an IT keyword since the U.S. announcement of 200 million dollar investment in R&D. This article reviews how the concept evolved and what its essence is. In Japan, Information Explosion (Info-plosion) project (2005-2010) by MEXT and Information Grand Voyage project(2007-2009) by METI were conducted, which had been launched based on quite similar motivation. An actual example video on twitter and blog diffusion and its content analytics shows the new value created by big data. Business applications which utilizes probe information generated by car are also introduced. Big data also are giving an impact of style of research in science:fourth paradigm. Finally the importance of data ecosystem is addressed so that various types of data driven innovation be enabled.