Evaluating Neuron Explanations: A Unified Framework with Sanity Checks

Fuente: arXiv
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Autori principali: Oikarinen, Tuomas, Yan, Ge, Weng, Tsui-Wei
Natura: Preprint
Pubblicazione: 2025
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author Oikarinen, Tuomas
Yan, Ge
Weng, Tsui-Wei
author_facet Oikarinen, Tuomas
Yan, Ge
Weng, Tsui-Wei
contents Understanding the function of individual units in a neural network is an important building block for mechanistic interpretability. This is often done by generating a simple text explanation of the behavior of individual neurons or units. For these explanations to be useful, we must understand how reliable and truthful they are. In this work we unify many existing explanation evaluation methods under one mathematical framework. This allows us to compare existing evaluation metrics, understand the evaluation pipeline with increased clarity and apply existing statistical methods on the evaluation. In addition, we propose two simple sanity checks on the evaluation metrics and show that many commonly used metrics fail these tests and do not change their score after massive changes to the concept labels. Based on our experimental and theoretical results, we propose guidelines that future evaluations should follow and identify a set of reliable evaluation metrics.
format Preprint
id arxiv_https___arxiv_org_abs_2506_05774
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Evaluating Neuron Explanations: A Unified Framework with Sanity Checks
Oikarinen, Tuomas
Yan, Ge
Weng, Tsui-Wei
Machine Learning
Understanding the function of individual units in a neural network is an important building block for mechanistic interpretability. This is often done by generating a simple text explanation of the behavior of individual neurons or units. For these explanations to be useful, we must understand how reliable and truthful they are. In this work we unify many existing explanation evaluation methods under one mathematical framework. This allows us to compare existing evaluation metrics, understand the evaluation pipeline with increased clarity and apply existing statistical methods on the evaluation. In addition, we propose two simple sanity checks on the evaluation metrics and show that many commonly used metrics fail these tests and do not change their score after massive changes to the concept labels. Based on our experimental and theoretical results, we propose guidelines that future evaluations should follow and identify a set of reliable evaluation metrics.
title Evaluating Neuron Explanations: A Unified Framework with Sanity Checks
topic Machine Learning
url https://arxiv.org/abs/2506.05774