Research On The Detective Method Of RFID Non-spontaneous Events Based On Interval-events

As RFID technology has become more mature, RFID technology has beenwidely applied,and will produce a large amount of basic events.How to efficientlyfind associated events from basic events flow to complete detecting complex eventswhich have the deeper semantic become a trend to RFID researchers.Butnon-spontaneous events make the automatic detection of the complex events becomedifficult.RFID technology researchers have conducted active research about detection ofRFID non-spontaneous events, and achieved certain results.They use othersspontaneous evnets to solve the detection of non-spontaneous events under chroniclecontext.Their strategies can well solve the detection of negative events.But thetraditional strategies can not solve the detection of iterative events which belonganother kind of non-spontanous events.In order to solve the detection of itervative events,we analyzed previousstudies,and proposed a detective method of RFID non-spontaneous events based oninterval-events.The specific works are as follows:After our analysis and research for why traditional non-spontaneous eventsprocessing strategies can not deal with the detection of iterative events,we find thestrategies which under traditional chronicle context can not deal with BatchMatching,it only generated from iterative event.So we propose a newcontext,new-chronicle,and under this context we use interval-events to detect iterativeevent,at last we give two detective algorithms of RFID complex events based onRFID complex events whether have temporal constraints,at same time we proposed aalgorithm to detect negative events.So our strategy can complete do non-spontaneousevents.After our analysis and research about temporal constraints contained in RFIDnon-spontaneous complex events, find if we process the temporal constraintscontained in RFID queries in advance,it can effectively filter out event instanceswhich do not match the query,so can enhance the efficiency about the detection of RFID complex events which have temporal constraints.Therefore,we proposeWithin,Interval and Dis temporal constraints via real life,analysis the characteristicsof each temporal constraint and different situations of combination with eachother,finally propose different processing algorithms to each temporal constraint.Finally,a lot of experiments to prove our proposed strategies can well deal withthe detection of RFID non-spontaneous complex events which have iterative events,atsame time we compare our strategy to RECDA of RFID complex events which havatemporal constraints,and find our strategy have a higher query efficiency.