Data Science ยท Chapter 42 of 43
Ethics & Privacy
Data scientists work with people's data. Follow the principles: consent, minimisation, purpose limitation, security.
Audit models for BIAS across gender, race, age and other sensitive groups.
Example 1 (python)
# Slice metrics by demographic group
# to check for disparate impactFairness starts with per-group metrics.
Example 2 (python)
# Anonymise/aggregate PII; consider differential privacyModern privacy tooling.
Key points
- Consent, minimisation, purpose, security.
- Bias comes from biased data.
- Audit outputs across groups.
- Never deploy without a fairness check.
๐ก Note: A '99% accurate' model that discriminates against a demographic is not a success โ it's a legal and ethical failure.
