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An Overview of Outlier Detection Technique with Support Vector Machine Developed for Wireless Sensor Networks

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Abstract

Wireless Sensor networks (WSNs) is an efficient and emerging area of Computer Science Engineering which has been currently employed in various fields of engineering particularly in communication system to make it effective and reliable. It is important to maintain the basic security level for different types of attacks like both external and internal for successful application of WSNs. Outliers in wireless sensor networks are measurements that deviate from the normal model of sensed data and result from errors, events or malicious attacks on the network. WSNs are more likely to generate outlier due to their special characteristics like constrained available with the resources causing frequent physical failure and harsh deployment area. The dynamic nature of sensor data and the specificity of the wireless sensor network make traditional outlier detection techniques unsuitable for direct application in such contexts so it is essential to select and adapt appropriate techniques to implement in wireless sensor networks for better sensing quality and more reliable system. This paper provides a comprehensive overview of existing outlier detection techniques specifically developed for the wireless sensor networks. Additionally, it presents a technique used to select data type, outlier type and outlier degree.We also investigate applicability of event detection technique for outlier detection. Through experimental study, we evaluate performance of our outlier detection technique to detect outliers and classify them as local or global based on real sensors.

Abstract

Wireless Sensor networks (WSNs) is an efficient and emerging area of Computer Science Engineering which has been currently employed in various fields of engineering particularly in communication system to make it effective and reliable. It is important to maintain the basic security level for different types of attacks like both external and internal for successful application of WSNs. Outliers in wireless sensor networks are measurements that deviate from the normal model of sensed data and result from errors, events or malicious attacks on the network. WSNs are more likely to generate outlier due to their special characteristics like constrained available with the resources causing frequent physical failure and harsh deployment area. The dynamic nature of sensor data and the specificity of the wireless sensor network make traditional outlier detection techniques unsuitable for direct application in such contexts so it is essential to select and adapt appropriate techniques to implement in wireless sensor networks for better sensing quality and more reliable system. This paper provides a comprehensive overview of existing outlier detection techniques specifically developed for the wireless sensor networks. Additionally, it presents a technique used to select data type, outlier type and outlier degree.We also investigate applicability of event detection technique for outlier detection. Through experimental study, we evaluate performance of our outlier detection technique to detect outliers and classify them as local or global based on real sensors.

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