Cross-Platform Strong Privacy Protection Mechanism for Review Publication

Algorithm 2

Determine the privacy metric.

(1)	Obtain the set of the score difference and the threshold ;
(2)	, ;
(3)	while do
	if
	;//the set of the score difference that satisfies the privacy metric;
	;//the number of published reviews
	;
(4)	Obtain all reviews corresponding to the score difference in and get the set of reviews needed to be published;
(5)	return ;