RFID复杂事件处理系统的研究实验，性能上做优化用公共子表达式，限制条件变换等方面-RFID complex event processing system for experiments done to optimize performance using common subexpression, restrictions, etc. Transform

RFID is an area of automatic identifi cation that is gaining momentum and is considered by some to emerge as one of the most pervasive computing technologies in history. In its simplest form, RFID is a similar concept to bar coding. It is