Table 1: Statistics of some reported Arabic online text databases.

Dataset	Year	Digits	Characters	Words	Writers
LMCA [7]	2008	30,000	100,000	500	55
OHASD [29]	2010	-	19,467	3,825	48
ADAB [12]	2011		174,690	33,164	166
AOD [52]	2012	30,000	-	-	100
MAYASTROUN [28]	2012	6,500	5,600	1,500	355
ALTECOnDb [32]	2014	-	106,433	152,680	1000
QHW [10]	2014	-	42,800	12,000	200