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James Oldfield

7 accepted papers

2026

Beyond Linear Probes: Dynamic Safety Monitoring for Language Models

ICLR 2026poster

Monitoring large language models' (LLMs) activations is an effective way to detect harmful requests before they lead to unsafe outputs. However, traditional safety monitors often require the same amount of compute for every query. This creates a trade-off: expensive monitors waste resources on easy…

Cited by 0SourcecodeScholar
2026

PolySAE: Modeling Feature Interactions in Sparse Autoencoders via Polynomial Decoding

ICML 2026poster

Sparse autoencoders (SAEs) have emerged as a promising method for interpreting neural network representations by decomposing activations into sparse combinations of dictionary atoms. However, SAEs assume that features combine additively through linear reconstruction, an assumption that cannot captur…

Cited by 0SourceScholar
2025

Towards Interpretability Without Sacrifice: Faithful Dense Layer Decomposition with Mixture of Decoders

NeurIPS 2025poster

Multilayer perceptrons (MLPs) are an integral part of large language models, yet their dense representations render them difficult to understand, edit, and steer. Recent methods learn interpretable approximations via neuron-level sparsity, yet fail to faithfully reconstruct the original mapping--sig…

Cited by 0SourcecodeScholar
2024

Multilinear Mixture of Experts: Scalable Expert Specialization through Factorization

NeurIPS 2024poster

The Mixture of Experts (MoE) paradigm provides a powerful way to decompose dense layers into smaller, modular computations often more amenable to human interpretation, debugging, and editability. However, a major challenge lies in the computational cost of scaling the number of experts high enough t…

2023

PandA: Unsupervised Learning of Parts and Appearances in the Feature Maps of GANs

ICLR 2023poster

Recent advances in the understanding of Generative Adversarial Networks (GANs) have led to remarkable progress in visual editing and synthesis tasks, capitalizing on the rich semantics that are embedded in the latent spaces of pre-trained GANs. However, existing methods are often tailored to specifi…

2023

Parts of Speech–Grounded Subspaces in Vision-Language Models

NeurIPS 2023poster

Latent image representations arising from vision-language models have proved immensely useful for a variety of downstream tasks. However, their utility is limited by their entanglement with respect to different visual attributes. For instance, recent work has shown that CLIP image representations ar…

2022

Cluster-Guided Image Synthesis With Unconditional Models

CVPR 2022poster

Generative Adversarial Networks (GANs) are the driving force behind the state-of-the-art in image generation. Despite their ability to synthesize high-resolution photo-realistic images, generating content with on-demand conditioning of different granularity remains a challenge. This challenge is usu…

Cited by 4PDFScholar