n°28I quarterlyI January 2013 Focus | 21 w one day in the digital world five.ltabfour.ltabzero.ltab million one.ltabfour.ltabfive.ltab billion emails are exchanged text messages are sent four.ltabzero.ltab,zero.ltabzero.ltabzero.ltab Very Large Telescope (VLT) three.ltabzero.ltab,zero.ltabzero.ltabzero.ltab the Large Hadronare produced atgigabytes of data four.ltab.five.ltab billion Collider (LHC) megabytes of data searches are collected are launched on Google four.ltabzero.ltabzero.ltab million tweets are sent five.ltabfive.ltabtwo.ltab million via Twitter users connect to Facebook Challenge mastodons is a challenging project initiatederaDIcatIgrouP,YoutuBe,twItter,I16 projects have beengoogle.ook,BFacea,DIeIPkIweso,cern,,tualready a success:Ht:ourcessyA wEhTsEAD lnrs: ConsDoTsAm bycnrs’smission for Interdisciplinarity. selected among the 37 presented.they “mastodons involves a large number have been allocated€700,000 in funding ofcnrs institutes around a common for 2012. “the main objective is to foster Sky Survey, a large astronomical observa- objective: to improve the management and the emergence of an interdisciplinary tion program, recorded 140 terabytes use of the huge amount of data available in scientific community around data science,” the databases of all scientific disciplines,” saysbouzeghoub.eachmastodons project of images (see table of scales). But its explainsmokranebouzeghoub, deputy could last four or five years.the first successor, the Large Synoptic Survey scientific director atcnrs’s Ins2I,1 who mastodons workshop was held in Paris Telescope (LSST)—a project involving oversees the program.among the various on December 5, 2012, offering researchers teams from CNRS’s IN2P33—will collect and security, data visualization, data in the field.an opportunity to assess ongoing progressthemes investigated are data storage thatmuch information every five days mining, or confidentiality. 01.Institut des sciences informatiques et de leurs onceoperational. Each year, the Large launched inmay 2012,mastodons is interactions. Hadron Collider (LHC) gathers almost 15 petabytes of data, the equivalent of more than three million DVDs. Today, man- kind generates around one zettabyte of widespread adoption of mobile devices, consumed like any other manufactured data each year—nearly as many bytes as the boom of social networks, the opening good.” These massive volumes of informa- there are stars in the universe.4 of several databases to consumers (“Open tion have taken on such economic, indus- BIG DATA. Data”), and the development of large- trial, and scientific importance that gov- An EConomIC PrIorITy The term commonly scale international scientific programs. ernments and businesses are making TheBig Data phenomenon, as it is dubbed used by specialists “We are witnessing a full-fledged democ- massive investments in this field. Into describe by specialists, continues to expand, driven large amounts of ratization of data,” adds Collet. “Data is March of last year, US President Barack by the success of the digital economy, the digital data. everywhere and it is generated, sold, and Obama announced a Big Data plan
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