Achieving Privacy-Preserving Group Recommendation with Local Differential Privacy and Random Transmission

Table 2

A rating matrix.

	Movie 1	Movie 2	Movie 3	Movie 4	Movie 5
Alice	5	4	5	3	5
Bob	3	4	3	2	3
Charles	5	4	2	1	3
David	2	3	5	3	1
Eric	1	2	4	5	2
Gloria	1	1	1	5	1