Introduction - If you have any usage issues, please Google them yourself
Event Filtering is the core function of RFID middleware and is hot spot in the research of
RFID middleware．Traditional Event Filtering technology rely on a variety of optimization in
the database，Can not meet the requirements of RFID middleware．the filtering technology
based Oil the memory databases is concern about in current researches，such as a variety of
filtering techniques based on the hash table，CQI，vclL R-Tree index have been proposed and
applied to the RFID middleware．Them improved the timeliness and reduce the storage space
to some extent，but t11ey emphasize unilateral performance but not overall performance
because the practical application environment of RFID middleware is not considered
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