The Open Automation and Control Systems Journal

2014, 6 : 637-648
Published online 2014 December 31. DOI: 10.2174/1874444301406010637
Publisher ID: TOAUTOCJ-6-637

Algorithm of Context Inconsistency Elimination Based on Feedback Windowing and Evidence Theory for Smart Home

Hongji Xu , Zhigang Xie and Leitao Wang
School of Information Science and Engineering, Shandong University, Jinan 250100, China.

ABSTRACT

Due to the accuracy difference of sensors, equipment heterogeneity, network delay and diversity of algorithms etc., inconsistency of context information may emerge, which would affect the accuracy and reliability of context reasoning and decision making. To solve this problem, an algorithm of context inconsistency elimination which is based on feedback windowing and evidence theory is proposed in this paper and can be applied in many scenarios, like smart home. Simulation results show that the proposed algorithm outperforms the other counterparts in accuracy when errors especially burst errors occur, and it can improve the accuracy and reliability of context-aware system.

Keywords:

Context-aware, evidence theory, feedback, inconsistency elimination, windowing.