Cleaning environmental sensing data streams based on individual sensor reliability

Yihong Zhang, Claudia Szabo, Quan Z. Sheng

Research output: Contribution to journalConference paperpeer-review

15 Citations (Scopus)


Environmental sensing is becoming a significant way for understanding and transforming the environment, given recent technology advances in the Internet of Things (IoT). Current environmental sensing projects typically deploy commodity sensors, which are known to be unreliable and prone to produce noisy and erroneous data. Unfortunately, the accuracy of current cleaning techniques based on mean or median prediction is unsatisfactory. In this paper, we propose a cleaning method based on incrementally adjusted individual sensor reliabilities, called influence mean cleaning (IMC). By incrementally adjusting sensor reliabilities, our approach can properly discover latent sensor reliability values in a data stream, and improve reliability-weighted prediction even in a sensor network with changing conditions. The experimental results based on both synthetic and real datasets show that our approach achieves higher accuracy than the mean and median-based approaches after some initial adjustment iterations.

Original languageEnglish
Pages (from-to)405-414
Number of pages10
JournalLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Publication statusPublished - 2014
Externally publishedYes
Event15th International Conference on Web Information Systems Engineering: WISE 2014 - Thessaloniki, Greece
Duration: 12 Oct 201414 Oct 2014


  • Data stream cleaning
  • Internet of Things
  • Sensor reliability


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