scholarly journals Belief Function Based Decision Fusion for Decentralized Target Classification in Wireless Sensor Networks

Sensors ◽  
2015 ◽  
Vol 15 (8) ◽  
pp. 20524-20540 ◽  
Author(s):  
Wenyu Zhang ◽  
Zhenjiang Zhang
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Belief Function ◽  
Decision Fusion ◽  
Wireless Sensor ◽  
Target Classification

scholarly journals Machine Learning Algorithms and Fault Detection for Improved Belief Function Based Decision Fusion in Wireless Sensor Networks

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1334 ◽  
Author(s):  
Atia Javaid ◽  
Nadeem Javaid ◽  
Zahid Wadud ◽  
Tanzila Saba ◽  
Osama Sheta ◽  
...  
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Fault Detection ◽  
Extreme Learning Machine ◽  
Belief Function ◽  
Decision Fusion ◽  
Wireless Sensor ◽  
Support Vector ◽  
Learning Machine ◽  
Fusion Approach

Decision fusion is used to fuse classification results and improve the classification accuracy in order to reduce the consumption of energy and bandwidth demand for data transmission. The decentralized classification fusion problem was the reason to use the belief function-based decision fusion approach in Wireless Sensor Networks (WSNs). With the consideration of improving the belief function fusion approach, we have proposed four classification techniques, namely Enhanced K-Nearest Neighbor (EKNN), Enhanced Extreme Learning Machine (EELM), Enhanced Support Vector Machine (ESVM), and Enhanced Recurrent Extreme Learning Machine (ERELM). In addition, WSNs are prone to errors and faults because of their different software, hardware failures, and their deployment in diverse fields. Because of these challenges, efficient fault detection methods must be used to detect faults in a WSN in a timely manner. We have induced four types of faults: offset fault, gain fault, stuck-at fault, and out of bounds fault, and used enhanced classification methods to solve the sensor failure issues. Experimental results show that ERELM gave the first best result for the improvement of the belief function fusion approach. The other three proposed techniques ESVM, EELM, and EKNN provided the second, third, and fourth best results, respectively. The proposed enhanced classifiers are used for fault detection and are evaluated using three performance metrics, i.e., Detection Accuracy (DA), True Positive Rate (TPR), and Error Rate (ER). Simulations show that the proposed methods outperform the existing techniques and give better results for the belief function and fault detection in WSNs.

Sign in / Sign up

Export Citation Format

Share Document