Cleaning RFID data streams based on K-means clustering method

Qiaomin Lin*, Anqi Fa, Min Pan, Qiang Xie, Kun Du, Michael Sheng

*Corresponding author for this work

Research output: Contribution to journalArticle


Currently radio frequency identification (RFID) technology has been widely used in many kinds of applications. Store retailers use RFID readers with multiple antennas to monitor all tagged items. However, because of the interference from environment and limitations of the radio frequency technology, RFID tags are identified by more than one RFID antenna, leading to the false positive readings. To address this issue, we propose a RFID data stream cleaning method based on K-means to remove those false positive readings within sampling time. First, we formulate a new data stream model which adapts to our cleaning algorithm. Then we present the preprocessing method of the data stream model, including sliding window setting, feature extraction of data stream and normalization. Next, we introduce a novel way using K-means clustering algorithm to clean false positive readings. Last, the effectiveness and efficiency of the proposed method are verified by experiments. It achieves a good balance between performance and price.

Original languageEnglish
Pages (from-to)72-81
Number of pages10
JournalJournal of China Universities of Posts and Telecommunications
Issue number2
Publication statusPublished - Apr 2020


  • Data stream
  • False positive reading
  • K-means
  • RFID


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