相关文献指出低质量的RFID原始数据,特别是大量的冗余数据制约了RFID技术的大规模应用,因此需要一种更有效的冗余数据清洗技术。文章根据RFID数据以及典型应用场景的特点,提出了一种多数据源冗余数据清洗技术,其中包括融合冗余数据清洗方法和交叉冗余数据清洗方法。融合冗余数据清洗方法基于滑动窗口与集合论,交叉冗余数据清洗方法借鉴了参考标签思想并且结合信号强度特征。实验证明,提出的数据清洗技术不但可以有效地完成RFID冗余数据清洗,同时能够为清洗后的数据保留准确的数据来源信息。
Aim. The introduction of the full paper does two things: ( 1 ) it reviews Refs. 1 through 6 and then points out that popularizing RFID ( Radio Frequency Identification) technology to a large scale is difficult, owing to " abstraction of scenarios producing RFID redundant readings" ; its core consists of: ( 1 ) Fig. 1 shows the abstraction of the scenarios producing RFID redundant readings ; (2) it gives six definitions. Section 2 is entitled "algo-rithms for detecting and eliminating redundant data" ; its core consists of: ( 1 ) Fig. 2 shows the schematic of merge - redundant cleaning technology; (2) Fig. 3 shows the schematic of cross - redundant cleaning technology, whose algorithm is based on reference tag strategy and RSSI (Received Signal Strength Indicator). The experimental results, presented in Figs. 4a) through 4f) , and their analysis show preliminarily that our proposed technology can clean redundant RFID data effectively and, more importantly, will not destroy the integrity of RFID data.