pm-cedp-qdp 0.1.2

Quantifying Temporal Privacy Leakage in Continuous Event Data Publishing

Introduction

This project implements the quantification of privacy leakage for differential privacy mechanisms in continuous event data publishing.

Python package

The implementation has been published as a standard Python package. Use the following command to install the corresponding Python package:

pip install pm-cedp-qdp

Usage

from pm_cedp_qdp.qdp import QDP

if __name__ == '__main__':
    log_name = "Sepsis Cases.xes"
    max_num_release = 5
    state_window = 200              # A large number will consider the entire prefix/suffix of traces
    state_direction = "backward"    # Backward (prefix) or forward (suffix)
    event_percentage = 0.5          # The percentage of events included in the first release
    recursive = True                # This will continue quantifying releases until there is no incomplete trace or reaching max_num_release. Otherwise, only one release is quantified.
    only_complete_traces = False    # If one wants to only consider the complete traces for generating temporal correlations.
    epsilon = 0.01                  # The privacy parameter of DP mechanism
    window_size = 2                 # How many new events per trace are released at each publish.
    certain_release = True          # If this is true, the number of new events per variant in each new release is equal to window_size, otherwise it is a random number range from 0 to window_size
    explore_depth = window_size     # The depth of exploring the transitions system.
    export_csv = log_name[:-4] + "_" + str(state_window) + "_" + state_direction + "_" + str(certain_release) + str(window_size) + ".csv"

    qdp = QDP()
    release_index, BPL_list, FPL_list, TPL_list = qdp.apply(log_name, epsilon, export_csv, recursive=recursive,
                              only_complete_traces=only_complete_traces, state_window=state_window,
                              state_direction=state_direction,
                              explore_depth = explore_depth,
                              window_size= window_size,
                              certain_release= certain_release,
                              event_percentage= event_percentage,
                              max_num_release = max_num_release)