Catalogue of Tools & Metrics for Trustworthy AI

These tools and metrics are designed to help AI actors develop and use trustworthy AI systems and applications that respect human rights and are fair, transparent, explainable, robust, secure and safe.

Scope

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This page includes technical metrics and methodologies for measuring and evaluating AI trustworthiness and AI risks. These metrics are often represented through mathematical formulas that assess the technical requirements for achieving trustworthy AI in a particular context. They can help to ensure that a system is fair, accurate, explainable, transparent, robust, safe, or secure.

Shapley Additive Explanations (SHAP) is a method that quantifies the contribution of each feature to the output of a predictive model. Rooted in cooperative game theory, SHAP values provide a theoretically sound approach for interpreting complex models by d...


Log odds ratio: A statistical measure used to quantify the strength of association between two events. It is the logarithm of the odds ratio.

The scientific community is increasingly aware of the necessity to embrace pluralism and consistently represent major and minor social groups. Currently, there are no standard evaluation techniques for different types of biases. Accordingly, there is an urg...

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Despite the success of deep neural networks (DNNs) in enabling on-device voice assistants, increasing evidence of bias and discrimination in machine learning is raising the urgency of investigating the fairness of these systems. Speaker verification is a fo...

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We propose a set of interrelated metrics, all based on the notion of AI output concentration, and the related Lorenz curve/Lorenz area under the curve, able to measure the Sustainability/robustness, Accuracy, Fairness/privacy, Explainability/accountability ...


The Hellinger distance is a metric used to measure the similarity between two probability distributions. It is related to the Euclidean distance but applied in the space of probability distributions. The Hellinger distance ranges between 0 and 1, where 0 in...


The demographic disparity metric (DD) determines whether a facet has a larger proportion of the rejected outcomes in the dataset than of the accepted outcomes. In the binary case where there are two facets, men and women for example, that constitute the dat...

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RADio introduces a rank-aware Jensen Shannon (JS) divergence. This combination accounts for (i) a user’s decreasing propensity to observe items further down a list and (ii) full distributional shifts as opposed to point estimates.

Contextual Outlier INterpretation (COIN) is a method designed to explain the abnormality of existing outliers spotted by detectors. The interpretability for an outlier is achieved from three aspects: outlierness score, att that contribute to the abnormality, a...

Given an input data sample, LEMNA generates a small set of interpretable features to explain how the input sample is classified. The core idea is to approximate a local area of the complex deep learning decision boundary using a simple interpretable model. ...


The α-Feature Importance metric quantifies the minimum proportion of features required to represent α of the total importance. In other words, this metric is focused in obtaining the minimum number of features necessary to obtain no less than α × 100% of th...


Local Interpretable Model-agnostic Explanations (LIME) is a method developed to enhance the explainability and transparency of machine learning models, particularly those that are complex and difficult to interpret. It is designed to provide clear, localize...


Following the VIC framework, our proposed ShapleyVIC extends the widely used Shapley-based variable importance measures beyond final models for a comprehensive assessment and has important practical implications.

Ideally we would like to obtain a more complete understanding of variable importance for the set of models that predict almost equally well. This set of almost-equally-accurate predictive models is called the Rashomon set; it is the set of models with training...

CLIPBERTSCORE is a simple weighted combination of CLIPScore (Hessel et al., 2021) and BERTScore (Zhang* et al., 2020) to leverage the robustness and strong factuality detection performance between image-summary and document-summary, respectively.

CLI...

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The Banzhaf power index is a power index defined by the probability of changing an outcome of a vote where voting rights are not necessarily equally divided among the voters. Data Banzhaf uses this notion to measure data points' "voting powers" towards algorit...

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Beta Shapley is a unified data valuation framework that naturally arises from Data Shapley by relaxing the efficiency axiom. The Beta(α, β)-Shapley value considers the pair of hyperparameters (α, β) which decides the weight distribution on [n]. Beta(1,1)-Shapl...

In a cooperative game, there are n players D = {1,...,n} and a score function v : 2[n] → R assigns a reward to each of 2 n subsets of players: v(S) is the reward if the players in subset S ⊆ D cooperate. We view the supervised machine learning problem as a coo...

The Surrogacy Efficacy Score is a technique for gaining a better understanding of the inner workings of complex "black box" models. For example, by using a Tree-based model, this method provides a more interpretable representation of the model’s behavior by...


The Partial Dependence Complexity metric uses the concept of Partial Dependence curve to evaluate how simple this curve can be represented. The partial dependence curve is used to show model predictions are affected on average by each feature. Curves repres...


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Disclaimer: The tools and metrics featured herein are solely those of the originating authors and are not vetted or endorsed by the OECD or its member countries. The Organisation cannot be held responsible for possible issues resulting from the posting of links to third parties' tools and metrics on this catalogue. More on the methodology can be found at https://oecd.ai/catalogue/faq.