“…Oneimportantproblemindataminingisthediscoveryoffrequentitemsetsinatransactionaldatabase (Leung,Chan,&Chung,2006).Frequentitemsetminingisatraditionalandimportantproblemindata mining.Anitemsetisfrequentifitssupportisnotlessthanaminimumsupportspecifiedbyusers. Traditionalfrequentitemsetminingapproacheshavemainlyconsideredtheproblemofminingstatic transactiondatabases.Inthesemethods,transactionsarestoredinsecondarystoragesothatmultiple scansoverthedatacanbeperformed.Frequentpatterns,suchasfrequentitemsets,substructures, sequencesterm-sets,phrasesets,andsubgraphs,generallyexistinreal-worlddatabases.Identifying frequentitemsetsisoneofthemostimportantissuesfacedbytheknowledgediscoveryanddata miningcommunity.Frequentitemsetminingplaysanimportantroleinseveraldataminingfields asassociationrules (Chandak,Girase,&Mukhopadhyay,2015;Mousavietal.,2017;(Bimonteet al,2017;Hamidietal.,2016),warehousing (Daraeietal.,2016;Hamidi,2011Hamidi, ,2009Hamidi, ,2010Hamidi, , 2011Hamidi, ,2017,correlations,clusteringofhigh-dimensionalbiologicaldata,andclassification (Linet al,2002;Hashemzadehetal.,2016;Mohammadietal.,2005).…”