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Meg Tong

4 accepted papers

2024

Steering Llama 2 via Contrastive Activation Addition

ACL 2024long

We introduce Contrastive Activation Addition (CAA), a method for steering language models by modifying their activations during forward passes. CAA computes “steering vectors” by averaging the difference in residual stream activations between pairs of positive and negative examples of a particular b…

2024

The Reversal Curse: LLMs trained on “A is B” fail to learn “B is A”

ICLR 2024poster

We expose a surprising failure of generalization in auto-regressive large language models (LLMs). If a model is trained on a sentence of the form ''_A_ is _B_'', it will not automatically generalize to the reverse direction ''_B_ is _A_''. This is the **Reversal Curse**. For instance, if a model is…

2024

Towards Understanding Sycophancy in Language Models

ICLR 2024poster

Reinforcement learning from human feedback (RLHF) is a popular technique for training high-quality AI assistants. However, RLHF may also encourage model responses that match user beliefs over truthful responses, a behavior known as sycophancy. We investigate the prevalence of sycophancy in RLHF-trai…