Re-ADP: Real-Time Data Aggregation with Adaptive -Event Differential Privacy for Fog Computing

Algorithm 2

The adaptive -event privacy.

Input: The current window size ; The fist and last sampling interval , at current window

Output: The new window size

Initialize the optimal number of sampling points:

Initialize the maximal QoP:

for each do

Calculate the current QoP:

if then

Count the number of sampling:

if and is sampling point then

;

Update the new window size: ;

return The new window size