The Mythos of Model Interpretability

The Mythos of Model Interpretability

6 Mar 2017 | Zachary C. Lipton
The paper "The Mythos of Model Interpretability" by Zachary C. Lipton explores the concept of interpretability in machine learning models, highlighting its importance and the challenges associated with it. The authors argue that while supervised machine learning models are highly predictive, their lack of interpretability can be problematic, especially in critical areas such as healthcare, criminal justice, and financial markets. The paper identifies several motivations for interpretability, including trust, causality, transferability, informativeness, and fair and ethical decision-making. However, the term "interpretability" is often used without a clear definition, leading to diverse and sometimes conflicting notions of what constitutes an interpretable model. The paper categorizes interpretability into two main categories: transparency and post-hoc explanations. Transparency refers to the ability to understand how a model works, while post-hoc explanations focus on extracting information from the model after it has made predictions. The authors discuss various techniques for achieving transparency, such as simulatability (ability to understand the entire model), decomposability (ability to understand individual components), and algorithmic transparency (understanding the learning algorithm). They also explore post-hoc methods like text explanations, visualizations, local explanations, and explanations by example. The paper concludes by discussing the implications of these findings, emphasizing that linear models are not inherently more interpretable than deep neural networks, and that claims about interpretability must be qualified. It also highlights the potential pitfalls of transparency, such as the trade-offs between transparency and broader objectives of AI, and the risk of misleading post-hoc interpretations. The authors suggest that future work should address these issues and develop richer loss functions and performance metrics to better align machine learning with societal needs.The paper "The Mythos of Model Interpretability" by Zachary C. Lipton explores the concept of interpretability in machine learning models, highlighting its importance and the challenges associated with it. The authors argue that while supervised machine learning models are highly predictive, their lack of interpretability can be problematic, especially in critical areas such as healthcare, criminal justice, and financial markets. The paper identifies several motivations for interpretability, including trust, causality, transferability, informativeness, and fair and ethical decision-making. However, the term "interpretability" is often used without a clear definition, leading to diverse and sometimes conflicting notions of what constitutes an interpretable model. The paper categorizes interpretability into two main categories: transparency and post-hoc explanations. Transparency refers to the ability to understand how a model works, while post-hoc explanations focus on extracting information from the model after it has made predictions. The authors discuss various techniques for achieving transparency, such as simulatability (ability to understand the entire model), decomposability (ability to understand individual components), and algorithmic transparency (understanding the learning algorithm). They also explore post-hoc methods like text explanations, visualizations, local explanations, and explanations by example. The paper concludes by discussing the implications of these findings, emphasizing that linear models are not inherently more interpretable than deep neural networks, and that claims about interpretability must be qualified. It also highlights the potential pitfalls of transparency, such as the trade-offs between transparency and broader objectives of AI, and the risk of misleading post-hoc interpretations. The authors suggest that future work should address these issues and develop richer loss functions and performance metrics to better align machine learning with societal needs.
Reach us at info@study.space
[slides] The mythos of model interpretability | StudySpace