With more and more data produced every day, we need to pay a special attention on the technologies to use in order to be able to analyze large amount of data. Big Data is often characterized by the 4 V for Volume, Variety, Velocity, Veracity that constitute challenges for the required tools.
 
With more and more data produced every day, we need to pay a special attention on the technologies to use in order to be able to analyze large amount of data. Big Data is often characterized by the 4 V for Volume, Variety, Velocity, Veracity that constitute challenges for the required tools.
   Exception encountered, of type "Error"
[770fca3b] /bigdata/index.php?diff=prev&oldid=86&title=Data_Science_or_not_Data_Science%3F Error from line 434 of /home/bigdata/includes/diff/DairikiDiff.php: Call to undefined function each()
Backtrace:
#0 /home/bigdata/includes/diff/DairikiDiff.php(544): DiffEngine->diag()
#1 /home/bigdata/includes/diff/DairikiDiff.php(344): DiffEngine->compareSeq()
#2 /home/bigdata/includes/diff/DairikiDiff.php(227): DiffEngine->diffLocal()
#3 /home/bigdata/includes/diff/DairikiDiff.php(721): DiffEngine->diff()
#4 /home/bigdata/includes/diff/DairikiDiff.php(859): Diff->__construct()
#5 /home/bigdata/includes/diff/DairikiDiff.php(980): MappedDiff->__construct()
#6 /home/bigdata/includes/diff/TableDiffFormatter.php(194): WordLevelDiff->__construct()
#7 /home/bigdata/includes/diff/DiffFormatter.php(140): TableDiffFormatter->changed()
#8 /home/bigdata/includes/diff/DiffFormatter.php(82): DiffFormatter->block()
#9 /home/bigdata/includes/diff/DifferenceEngine.php(881): DiffFormatter->format()
#10 /home/bigdata/includes/diff/DifferenceEngine.php(797): DifferenceEngine->generateTextDiffBody()
#11 /home/bigdata/includes/diff/DifferenceEngine.php(728): DifferenceEngine->generateContentDiffBody()
#12 /home/bigdata/includes/diff/DifferenceEngine.php(662): DifferenceEngine->getDiffBody()
#13 /home/bigdata/includes/diff/DifferenceEngine.php(632): DifferenceEngine->getDiff()
#14 /home/bigdata/includes/diff/DifferenceEngine.php(453): DifferenceEngine->showDiff()
#15 /home/bigdata/includes/page/Article.php(797): DifferenceEngine->showDiffPage()
#16 /home/bigdata/includes/page/Article.php(508): Article->showDiffPage()
#17 /home/bigdata/includes/actions/ViewAction.php(44): Article->view()
#18 /home/bigdata/includes/MediaWiki.php(490): ViewAction->show()
#19 /home/bigdata/includes/MediaWiki.php(287): MediaWiki->performAction()
#20 /home/bigdata/includes/MediaWiki.php(714): MediaWiki->performRequest()
#21 /home/bigdata/includes/MediaWiki.php(508): MediaWiki->main()
#22 /home/bigdata/index.php(41): MediaWiki->run()
#23 {main}