[Change Request] Chapter 1: refine explanation on differential privacy

[dsmits]

There seems to be different ways to add when using differential privacy.

Currently we are describing differential privacy techniques as replacing a subset of records with noise.

There seem to be different methods as well, where the noise is added to the raw values (instead of replacement).

Let's figure out a little bit more about the landscape of differential privacy and adapt the text.

Sources:

• https://desfontain.es/blog/differential-privacy-in-practice.html
• https://www.youtube.com/watch?v=mO0NmkVGapM

[dsmits]

This video was quite helpful on listing different techniques: https://www.youtube.com/watch?v=Quzx_QaARAE&t=0s

[bartvanb]

Maybe you can mention the links in the lesson for students interested to know more?

[dsmits]

@bartvanb I will open a separate issue for that because I think the list of links has to be more complete than just differential privacy: #88