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Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate...

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Page 1: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model
Page 2: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai© 2019 Feedzai

The FATE of Financial Crime PreventionPedro Saleiro

Money2020 - Las Vegas, October 2019

Pedro SaleiroData Science Manager

The FATE ofFinancial Crime Prevention:Fairness, Accountability,Transparency and Ethics in AI

Page 3: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

The 3 main ethical problems of AI today(not adequately addressed by regulation, yet)

Page 4: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

1. Bias and Fairness

Page 5: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model
Page 6: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

What about the online payments industry?

The fictional example of Tyler and Xmusic:The False Positive Rate for Tyler’s zip code is

5X higher than average

Xmusic is not aware of the biases ofits fraud prevention AI solution

Page 7: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

2. Transparency

Page 8: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

State-of-the-Art in Explainable AI

Transaction: 23132Score: 875

Fraud Non-fraud

Page 9: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

3. Accountability

Page 10: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

Companies must use AI that is compliantand tied to their values!

But...

Increasing complexity (e.g., deep learning) and automation (e.g., AutoML) makes it hard

to understand AI and its impact.

Page 11: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

FATE to the rescue!(let’s talk about a few research projects)

Page 12: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

1. Bias and Fairness Audits

Page 13: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

What do you need to audit an AI system?

1. Fraud predictions 2. The true outcome

(fraud/not fraud)3. Protected attributes

you care about4. Select bias metrics5. Bias audit toolkit (e.g. Aequitas)

Page 14: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

The Awareness Effect

Page 15: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

2. Human-Interpretable Explanations(and adequate evaluation)

Page 16: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

How a great explanation looks like

Transaction: 23132Model Score: 875

Explanation:Suspicious because it's an

high-speed ordering from a bot

Fraud Non-fraud

Page 17: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

Semantic Layer for Explanations

Linking low-level model-based explanations with semantic

concepts from a fraud ontology

Page 18: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

Systematic Evaluation of Explanations

Page 19: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

3. Robust and Multi-Objective Model Selection

Page 20: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

The Awareness Effect (again!)

Page 21: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

Multi-Objective Model Selection

From all the compliant models optimize:

1. Overall performance (e.g., Recall)2. Fairness (e.g., FPR disparity nationality)3. Performance Stability4. Quality of Explanations5. Energy consumption (!!)

Page 22: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

OutlookFairness, Transparency and Accountability arecurrent ethical issues in AI

FATE research at Feedzai is working on:1. Fairness Awareness through audits2. Human-Interpretable and useful explanations3. Robust and multi-objective model selection

We are empowering our clients with control to develop AI that is compliant, tied to their values and function as intended!

Page 23: Crime Prevention - Feedzai · The fictional example of Tyler and Xmusic: The False Positive Rate for Tyler’s zip code is 5X higher than average ... Robust and multi-objective model

© 2019 Feedzai

THANK YOU


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