Podcast
Questions and Answers
What is a primary reason for needing explanations in machine learning?
What is a primary reason for needing explanations in machine learning?
- To decrease the computational complexity of the algorithms.
- To validate the logic of models and ensure they are not making decisions based on spurious correlations or biases. (correct)
- To make the models more opaque and harder to understand for competitive advantage.
- To reduce the amount of training data required for the models.
Which of the following is a potential consequence of using machine learning algorithms without understanding their decision-making process?
Which of the following is a potential consequence of using machine learning algorithms without understanding their decision-making process?
- Enhanced model generalization across different datasets.
- Increased trust and adoption of AI systems regardless of their accuracy.
- Perpetuation of biases present in the training data, leading to unfair or discriminatory outcomes. (correct)
- Reduction in the risk of adversarial attacks due to model opacity.
The EU's General Data Protection Regulation (GDPR) includes which provision related to explainability?
The EU's General Data Protection Regulation (GDPR) includes which provision related to explainability?
- A requirement to use only white box models in automated decision-making.
- Mandatory disclosure of all training data used for machine learning models.
- The 'right to an explanation,' providing users with meaningful information about the logic involved in automated decisions. (correct)
- The 'right to be forgotten,' ensuring data is permanently deleted upon request.
In the context of Fairness, Accountability, and Transparency in Machine Learning (FAT/ML), what does explainability ensure?
In the context of Fairness, Accountability, and Transparency in Machine Learning (FAT/ML), what does explainability ensure?
According to DARPA, which question does Explainable Artificial Intelligence (XAI) aim to answer?
According to DARPA, which question does Explainable Artificial Intelligence (XAI) aim to answer?
Which of the following is NOT a primary benefit of machine learning explanations?
Which of the following is NOT a primary benefit of machine learning explanations?
Which factor contributes to the difficulty of achieving explainability in machine learning?
Which factor contributes to the difficulty of achieving explainability in machine learning?
What is a key limitation of using inherently interpretable models, such as decision trees, for complex problems?
What is a key limitation of using inherently interpretable models, such as decision trees, for complex problems?
What distinguishes white box models from black box models?
What distinguishes white box models from black box models?
What is the primary goal of Local Explanation methods?
What is the primary goal of Local Explanation methods?
How do post-hoc explanation methods work?
How do post-hoc explanation methods work?
What is LIME primarily used for?
What is LIME primarily used for?
Which of the following best describes LIME (Local Interpretable Model-Agnostic Explanations)?
Which of the following best describes LIME (Local Interpretable Model-Agnostic Explanations)?
What is a potential drawback of LIME?
What is a potential drawback of LIME?
Which statement is true about LIME?
Which statement is true about LIME?
What theoretical concept is SHAP based on?
What theoretical concept is SHAP based on?
What does the 'dummy' axiom in Shapley Value theory state?
What does the 'dummy' axiom in Shapley Value theory state?
What does SHAP stand for?
What does SHAP stand for?
In the context of SHAP, what is the purpose of feature attribution?
In the context of SHAP, what is the purpose of feature attribution?
Which of the following models is directly supported by the TreeExplainer in SHAP?
Which of the following models is directly supported by the TreeExplainer in SHAP?
For which type of models is DeepExplainer used within the SHAP framework?
For which type of models is DeepExplainer used within the SHAP framework?
What is a key characteristic of KernelExplainer (Kernel SHAP)?
What is a key characteristic of KernelExplainer (Kernel SHAP)?
What is the primary purpose of force plots?
What is the primary purpose of force plots?
In SHAP, what do dependence plots illustrate?
In SHAP, what do dependence plots illustrate?
What information is conveyed by summary plots?
What information is conveyed by summary plots?
How does SHAP handle feature interactions?
How does SHAP handle feature interactions?
Which of the following is a known advantage of using SHAP values for explaining machine learning models?
Which of the following is a known advantage of using SHAP values for explaining machine learning models?
Which of the following statements is true regarding Kernel SHAP?
Which of the following statements is true regarding Kernel SHAP?
What is a potential challenge or drawback of using SHAP values?
What is a potential challenge or drawback of using SHAP values?
Why is explainability important in machine learning, particularly in high-stakes decisions?
Why is explainability important in machine learning, particularly in high-stakes decisions?
Which of the following statements describes a key consideration when choosing between different explainability methods like LIME and SHAP?
Which of the following statements describes a key consideration when choosing between different explainability methods like LIME and SHAP?
How do machine learning models learn decision models?
How do machine learning models learn decision models?
What is a potential outcome if machine learning models replicate 'historical biases'?
What is a potential outcome if machine learning models replicate 'historical biases'?
According to the US Equal Credit Opportunity Act 1974, what are credit agencies required to do?
According to the US Equal Credit Opportunity Act 1974, what are credit agencies required to do?
What is the aim of data scientists, developers, and product owners with Explainable AI?
What is the aim of data scientists, developers, and product owners with Explainable AI?
What are two regulatory compliances mentioned in the lecture?
What are two regulatory compliances mentioned in the lecture?
What is a key reason machine learning algorithms are vulnerable to adversarial attacks, such as one-pixel attacks?
What is a key reason machine learning algorithms are vulnerable to adversarial attacks, such as one-pixel attacks?
Why might a health outcome prediction model based on X-ray images, without explainability, result in the 'right' prediction for the wrong reason?
Why might a health outcome prediction model based on X-ray images, without explainability, result in the 'right' prediction for the wrong reason?
How can explainability help in defending against adversarial attacks on machine learning models?
How can explainability help in defending against adversarial attacks on machine learning models?
What is the potential consequence of machine learning models learning and replicating 'historical biases'?
What is the potential consequence of machine learning models learning and replicating 'historical biases'?
What does algorithmic transparency ensure in the context of Fairness, Accountability, and Transparency in Machine Learning (FAT/ML)?
What does algorithmic transparency ensure in the context of Fairness, Accountability, and Transparency in Machine Learning (FAT/ML)?
According to DARPA, what is a central question that Explainable Artificial Intelligence (XAI) seeks to address when deploying AI systems?
According to DARPA, what is a central question that Explainable Artificial Intelligence (XAI) seeks to address when deploying AI systems?
How might validating the logic of a machine learning model using explainability techniques contribute to model improvement?
How might validating the logic of a machine learning model using explainability techniques contribute to model improvement?
Why is model complexity a key factor that contributes to the difficulty of achieving explainability in machine learning?
Why is model complexity a key factor that contributes to the difficulty of achieving explainability in machine learning?
Why do interpretable models, like decision trees, face scalability challenges when applied to complex problems?
Why do interpretable models, like decision trees, face scalability challenges when applied to complex problems?
What is a primary characteristic that distinguishes 'White Box' models from 'Black Box' models?
What is a primary characteristic that distinguishes 'White Box' models from 'Black Box' models?
What is the core principle behind Local Explanation methods in explainable AI?
What is the core principle behind Local Explanation methods in explainable AI?
How do Post-Hoc explanation methods work in machine learning?
How do Post-Hoc explanation methods work in machine learning?
Why might a misleading explanation from a machine learning model using LIME lead to negative outcomes?
Why might a misleading explanation from a machine learning model using LIME lead to negative outcomes?
LIME is considered computationally expensive because it...
LIME is considered computationally expensive because it...
A key limitation of LIME is that it assumes local linearity, meaning...
A key limitation of LIME is that it assumes local linearity, meaning...
In the context of cooperative game theory, what does SHAP considers as 'players'?
In the context of cooperative game theory, what does SHAP considers as 'players'?
What does the 'efficiency' axiom in Shapley Value theory state regarding feature attribution?
What does the 'efficiency' axiom in Shapley Value theory state regarding feature attribution?
What kind of models is TreeExplainer is optimized to explain?
What kind of models is TreeExplainer is optimized to explain?
For what type of models is DeepExplainer primarily designed?
For what type of models is DeepExplainer primarily designed?
What is a key characteristic of KernelExplainer in SHAP?
What is a key characteristic of KernelExplainer in SHAP?
What do force plots in SHAP primarily visualize?
What do force plots in SHAP primarily visualize?
What information do dependence plots in SHAP communicate?
What information do dependence plots in SHAP communicate?
What is the purpose of summary plots in SHAP?
What is the purpose of summary plots in SHAP?
Why is it not recommended to consider Kernel SHAP as a direct alternative to LIME?
Why is it not recommended to consider Kernel SHAP as a direct alternative to LIME?
What is one key advantage of using SHAP values for explaining machine learning models?
What is one key advantage of using SHAP values for explaining machine learning models?
Flashcards
Explainable AI (XAI)
Explainable AI (XAI)
The ability to understand and explain how machine learning models make decisions, ensuring transparency and trust.
Right for the Wrong Reason
Right for the Wrong Reason
A situation where models learn and make predictions based on irrelevant or incorrect features, leading to poor generalization.
Adversarial Attacks
Adversarial Attacks
A technique where slight modifications to input data can cause machine learning models to make incorrect predictions.
ML Algorithm Bias
ML Algorithm Bias
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Equal Credit Opportunity Act 1974
Equal Credit Opportunity Act 1974
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GDPR 2018
GDPR 2018
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Explainability (FAT/ML)
Explainability (FAT/ML)
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White Box Models
White Box Models
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Black Box Models
Black Box Models
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Local Explanation
Local Explanation
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Post-Hoc Explanations
Post-Hoc Explanations
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LIME
LIME
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LIME Perturbation
LIME Perturbation
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SHAP
SHAP
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Shapley Value
Shapley Value
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Shapley Value Axioms
Shapley Value Axioms
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TreeExplainer
TreeExplainer
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DeepExplainer
DeepExplainer
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KernelExplainer
KernelExplainer
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Force Plots
Force Plots
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Dependence Plots
Dependence Plots
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Summary Plot
Summary Plot
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Study Notes
Explainable AI (XAI)
- Machine learning (ML) explanations are important to validate logic in models
- ML explanations help in defending against adversarial attacks, detecting bias, ensuring regulatory compliance, and debugging models
- Explainability ensures trust, which leads to adoption.
Why do We Need Machine Learning Explanations?
- ML algorithms can be biased
- ML algorithms are vulnerable to adversarial attacks
- ML algorithms can be easily fooled
Examples of Bias in Machine Learning:
- COMPAS (Correctional Offender Management Profiling for Alternative Sanctions) is an example of a biased machine learning algorithm
- Amazon scrapped an AI recruiting tool because it showed bias against women and penalizing applicants for attending women's college or participating in women's chess clubs.
Explainability and the Law
- US Equal Credit Opportunity Act of 1974 requires credit agencies to provide the main factors determining credit score
- EU General Data Protection Regulation (GDPR) 2018 provides a "Right to an explanation", giving users information about the logic involved in automated decisions
Explainable AI (XAI) Defined
- XAI ensures that algorithmic decisions and the data driving those decisions can be explained to end-users and stakeholders in non-technical terms
- DARPA poses key questions for XAI, including "Why did you do that?", "Why not something else?", and "When can I trust you?"
Target Audience
- XAI is targeted towards domain experts/users, those affected by model decisions, regulatory entities/agencies, managers and executive board members, and data scientists/developers/product owners
Explainability Challenges
- Achieving explainability in ML is difficult due to model complexity
- ML methods learn complex functions, making it difficult to explain output as a function of the input
- Interpretable models may not scale
- The multiplicity of good models makes it difficult
- GPT-3, OpenAI's Natural Language Processing Model has 175,000,000,000 parameters
Explainability Options
- White Box Models: Self-explanatory, interoperable output
- Black Box Models: Map user features into a decision class without exposing the how and why they make decisions
- Local Explanation involves only a small piece of complexity
- Post-Hoc Explanations interprets and generates explanations from surrogate models
LIME (Local Interpretable Model-Agnostic Explanations)
- LIME approximates an underlying function
- LIME is widely cited, easy to understand and easy to implement
- Cons of LIME; Assumes local linearity, is computationally expensive, requires a large number of samples, and is not stable
- A LIME misleading explanation can fool users into trusting a biased classifier
- KernelExplainer (Kernel SHAP) uses a combination of LIME and Shapley values
SHAP (SHapley Additive exPlanations)
- SHAP aims to explain predictions of individual instances using force plots
- Shapley Value is a concept from cooperative game theory where members receive proportional payments or shares to their marginal contributions
- SHAP value axioms: Dummy, Symmetry, Efficiency and Additivity
- Compute SHAP values for trees and ensembles of trees
- Compute SHAP values for deep learning models
SHAP Explainers
- TreeExplainer; Supports XGBoost, LightGBM, CatBoost, and other tree-based models like Random Forest.
- DeepExplainer; Supports TensorFlow and Keras models, using DeepLIFT and Shapley values.
- GradientExplainer; Supports TensorFlow and Keras models.
- KernelExplainer (Kernel SHAP); Model agnostics and uses a combination of LIME and Shapley values
Visualizations
- Force Plots (Single Instance and Entire Dataset)
- Dependence Plots
- Summary Plots
- Interaction Values
SHAP Pros and Cons
- SHAP is widely cited, based on theory, and easy to implement
- It comes with a lot of visualization plots
- SHAP supports useful visualization charts, is based on game theory, but expensive to run
- SHAP incorporates LIME into its logic
Reading List
- "Why should I trust you?: Explaining the predictions of any classifier."
- "A Unified Approach to Interpreting Model Predictions"
- Data Camp Article - "An Introduction to SHAP Values and Machine Learning Interpretability"
- Data Camp – "Explainable Artificial Intelligence (XAI)"
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