Privacy Lab Task 20th Sept

For the project part of the lab:

1. Implement one of two possible differentially private decision
functions for a given model. (This model can be calculated on
non-private data). The choices are:

(a) Laplace mechanism where each new person's data is randomised before
a decision is made.

(b) Exponential mechanism where the utility function is used directly to
make a random decision.

In either case, try to plot the effect of the privacy on
the utility.