An Efficient and Secure Malicious User Detection Scheme Based on Reputation Mechanism for Mobile Crowdsensing VANET

Table 2

Notations.

Parameters	Description
	The number of subregions
	The number of PVs in the subregion
	The -th participating vehicle in the -th subregion
	The whole sensing region
	The -th sensing subregion
	The number of PVs in
	The subleader in
	The identity information of
	The package information uploaded by
	The public key of
	The secret key of
	The -th historical reputation value of
	The mean of -time historical reputation values of
	The latest reputation value of
	The raw sensing data of
	The valuable sensing data of
	The proportion of data uploading by
	The historical data quality evaluation result of
	The new data quality evaluation result of
	The reputation history of
	The data unbiasedness of
	The old data unbiasedness of
	The deviation between and the mean value of all data of
	The leadership of
	The old leadership of
	The number of times of as subleader
	The space force of
	The old space force of