arXiv AI

Harmful Partial Interventions and Benign Leakage in Concept-based Models

The paper investigates how interventions on intermediate concepts in concept‑based models can sometimes worsen downstream predictions, a problem termed intervention harm. It shows that the previously proposed leakage‑mitigation objective, which optimises for full‑concept interventions, does not reliably prevent harm when only a subset of concepts is altered. The authors propose a new monotonic intervention objective that penalises increases in task loss during partial interventions, and demonstrate that combining this with the endpoint objective substantially reduces both the frequency and severity of partial‑intervention harm while maintaining overall model performance.

arXiv Machine Learning
Jul 24

Concept Concentration for Faithful Representation Intervention

arXiv:2505. 18672v2 Announce Type: replace Abstract: Representation intervention aims to localize and modify the representations that encode the underlying concepts in large language models (LLMs) to elicit the aligned and expected behaviors.

By Hongzheng Yang, Yongqiang Chen, Zeyu Qin, Tongliang Liu, Chaowei Xiao, Kun Zhang, Bo Han
arXiv AI
Oct 9

Towards Reasonable Concept Bottleneck Models

The paper introduces CREAMs, a flexible framework for Concept Bottleneck Models that allows explicit encoding of concept‑concept and concept‑task relationships such as mutual exclusivity, hierarchy, and correlations. CREAMs can optionally use a regularized side‑channel to compensate for incomplete concept sets, maintaining competitive performance while encouraging concept‑grounded predictions. The authors also propose a new metric to assess interpretability when predictions partially rely on the side‑channel, and demonstrate that CREAMs support efficient interventions, avoid concept leakage, and match black‑box performance even with missing concepts.

By Nektarios Kalampalikis, Kavya Gupta, Georgi Vitanov, Isabel Valera
arXiv Computer Vision
Sep 14

GRACE: Adaptive Concept Erasure with Geometry-Guided Retention in Diffusion Models

GRACE is a new framework for concept erasure in text-to-image diffusion models that uses a semantically weighted sensitive subspace to guide localized interventions and lightweight subspace-constrained adapters to avoid global semantic disruption. It replaces manual counterfactual prompts with an automatically decoupled safe-anchor mechanism and controls intervention strength through an energy-driven dynamic gating system. Experiments show GRACE improves NSFW reduction by 17.86% over five state-of-the-art methods while also reducing target CLIP Score and FID, indicating stronger concept suppression with better preservation of generative quality.

By Qinghui Gong, Yihuai Liang, Yuanlun Xie, Deepak Kumar Jain, Vitomir \v{S}truc, Zhengchun Zhou
arXiv Machine Learning
Oct 9

Class Machine Unlearning for Complex Data via Concepts Inference and Data Poisoning

The paper introduces a concept-guided poisoning unlearning framework that explicitly identifies semantic concepts most strongly linked to a target class or knowledge. For image classification, it uses a Post-hoc Concept Bottleneck Model to locate relevant image regions and creates poisoned samples; for large language models, it aggregates Integrated Gradients over multiple question responses to mask important content and generate poisoned training targets. Experiments across several datasets demonstrate effective unlearning while largely preserving model utility.

By Wenhan Chang, Tianqing Zhu, Heng Xu, Wenjian Liu, Wanlei Zhou