arXiv AI

$\alpha$-TCAV: A Unified Framework for Testing with Concept Activation Vectors

arXiv Statistics ML
Oct 28

On The Variability of Concept Activation Vectors

The paper investigates how Concept Activation Vectors (CAVs), used for concept‑based explanations in AI, vary due to the randomness in sampling training examples. A theoretical analysis shows that the variance of CAVs decreases roughly as 1/N, where N is the number of sampled examples. Experiments across four modalities confirm this relationship, leading to practical guidelines for efficiently applying CAVs.

By Julia Wenkmann, Damien Garreau
arXiv Machine Learning
Oct 19

Escaping Parameter Space: Tight Generalization Bounds via Representation Quality

The paper presents a tight generalization bound for deterministic neural networks that relies on the quality of their last hidden layer representations rather than traditional parameter-space metrics. By using a parameter‑free k‑nearest‑neighbor classifier to assess representation quality, the bound decomposes into three measurable components—local class geometry, decoder‑network agreement, and training stability—providing both a non‑vacuous certificate and a diagnostic tool for understanding generalization. Experiments show the bound achieves an 8.0‑percentage‑point gap to test error on CIFAR‑10 with ResNet‑18, yields the first non‑vacuous certificates on CIFAR‑100, and certifies 1.4 % on CIFAR‑10 and 23.1 % on 1,000‑class ImageNet using frozen DINOv2 representations.

By Niclas G\"oring, Shuofeng Zhang, Branton DeMoss, Ard A. Louis
arXiv AI
Sep 1

ICON Decomposition: Auditing Deep Neural Networks with Multivariate Variance-based Concept-level Explanations

arXiv:2608.26083v2 Announce Type: replace-cross Abstract: Deep neural networks often exploit spurious associations, a failure known as shortcut learning. Auditing for shortcuts requires testing many...

By Roshan Prakash Rane, Marco Simnacher, Manuel Pfeuffer, Marc-Andre Schulz, Nys Tjade Siegel, Maximilian Dreyer, Frederik Pahde, Wojciech Samek, Sonja Greven, Kerstin Ritter
arXiv Machine Learning
Aug 27

ICON Decomposition: Multivariate Concept-Level Explanations of Deep Representations for Model Auditing

ICON Decomposition is a new method for explaining deep neural networks by quantifying how much variance each concept explains in a network layer after accounting for all other concepts and the outcome. Unlike previous concept‑based methods that evaluate concepts in isolation, ICON can distinguish genuine model reliance from spurious correlations. Experiments on synthetic data, skin‑lesion, and brain‑imaging models show that ICON recovers concept importance more accurately, isolates truly relied‑upon concepts, and provides sparse explanations validated through retraining and out‑of‑distribution testing.

By Roshan Prakash Rane, Marco Simnacher, Manuel Pfeuffer, Marc-Andre Schulz, Nys Tjade Siegel, Maximilian Dreyer, Frederik Pahde, Wojciech Samek, Sonja Greven, Kerstin Ritter
Hugging Face Trending Papers
Jun 22

Sublinearly Structured Deep Neural Networks Achieve Feature Learning Consistency for Compositional Functions

Over the past decade, deep neural networks (DNNs) have achieved remarkable success on complex machine-learning tasks, yet the theoretical foundations of their performance remain incomplete. From a statistical viewpoint, a natural question is: can DNNs attain feature-learning and prediction consistency comparable to that of classical models?

arXiv Statistics ML
Oct 19

A Class of R\'enyi-based Concentration Metrics for Kolmogorov-Arnold Geometry in Multilayer Perceptrons

The paper introduces a new family of concentration metrics, called α-RC, based on Rényi divergence to assess how the magnitudes of Jacobian minors in multilayer perceptrons are distributed. Unlike the existing Participation Ratio, these metrics are bounded between 0 and 1 regardless of network size, with 0 meaning uniform spread and 1 indicating dominance by a single minor. For α=2, the α-RC metric reduces to a transformed version of the Participation Ratio, and experiments on single-hidden-layer MLPs demonstrate its practical advantages.

By Juan Carlos Fern\'andez, Asunci\'on Jim\'enez-Cordero, Jos\'e Francisco Paris