RFID data cleaning technology on warehouse oriented
                                                        CHAI Wen chao1, TANG Hong tao1,2, WU Guang hua1,3
（1.College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310032, China;2.Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, Hangzhou 310027, China;3.Zhejiang Huizhi Logistics Equipment Technology Co., Ltd., Huzhou 313028, China）

Abstract: Aiming at unreliability of original RFID data in warehouse, the redundancy and out of order event flows of RFID data in warehouse were studied to propose a warehouse oriented RFID data cleaning model. Firstly, problems of RFID data in warehouse were described and an abstract scenario generated by redundant data and out of order event flows was set up. Secondly, combined with the RFID warehouse data cleaning model, the corresponding algorithms were proposed for cleaning redundant data and modifying out of order event flows and the improvements of algorithm and detailed implementation procedures were introduced. Finally, by means of the reader inspection model, original RFID data flows were constructed to test the number of records and indicators of accuracy on the basis of different experiment parameters. The results indicate that the proposed data cleaning method can effectively remove redundant data.

Key words: radio frequency identification（RFID）; datacleaning model; redundantdata cleaning; outoforder event flow correction