collaborators

5 papers

cs.LG2026

Is your algorithm unlearning or untraining?

Eleni Triantafillou, Ahmed Imtiaz Humayun, Monica Ribero +3

As models are getting larger and are trained on increasing amounts of data, there has been an explosion of interest into how we can ``delete'' specific data points or behaviours fr…

cs.LG2026

Detoxifying LLMs via Representation Erasure-Based Preference Optimization

Nazanin Mohammadi Sepahvand, Eleni Triantafillou, Hugo Larochelle +3

Large language models (LLMs) trained on webscale data can produce toxic outputs, raising concerns for safe deployment. Prior defenses, based on applications of DPO, NPO, and simila…

cs.LG2026

Step-resolved data attribution for looped transformers

Georgios Kaissis, David Mildenberger, Juan Felipe Gomez +2

We study how individual training examples shape the internal computation of looped transformers, where a shared block is applied for recurrent iterations to enable latent reas…

cs.LG2026

Position: Capability Control Should be a Separate Goal From Alignment

Shoaib Ahmed Siddiqui, Eleni Triantafillou, David Krueger +1

Foundation models are trained on broad data distributions, yielding generalist capabilities that enable many downstream applications but also expand the space of potential misuse a…

cs.CR2026

Your Privacy Depends on Others: Collusion Vulnerabilities in Individual Differential Privacy

Johannes Kaiser, Alexander Ziller, Eleni Triantafillou +2

Individual Differential Privacy (iDP) promises users control over their privacy, but this promise can be broken in practice. We reveal a previously overlooked vulnerability in samp…