A blunt refusal can stop harm and still fail the person: PsychoSafe framing refusals as structured support and improved refusal quality by 28.1%
AspireAI community · arXiv (cs.CL)
In crisis, coercion or escalating-intent interactions, saying no plainly may block direct harm while still leaving the person's actual needs unaddressed. PsychoSafe reframes refusal as structured supportive communication grounded in evidence-based intervention strategies, built from a corpus of 8,019 prompt-response pairs across five psychologically salient risk domains and applied to Qwen 3.5 27B by prompting and by parameter-efficient fine-tuning. On a balanced 500-prompt validation set with an LLM judge and human ratings, prompting improved overall refusal quality by 28.1% over a generic baseline, with external resource referral up 46.8% and psychological grounding up 34.8%, while non-refusal task performance held. The limitation: fine-tuning reached near-perfect refusal rates but cut response relevance, and out-of-domain generalization on SORRY-Bench and XSTest was limited.
Read the story and explore more from the AspireAI community.
Two sparse-autoencoder analyses have resisted scaling: matching semantically similar features across layers, and compressing large feature circuits into interpretable supernodes. This paper argues both are the same underlying problem, estimating semantic distances between SAE features that sit on different activation manifolds. Its representation treats each feature not as a single decoder vector but as an activation-weighted distribution over the hidden states expressing it, projects those distributions into a shared reference space, and compares them with Wasserstein distance. The representation is proved invariant to activation rescaling and stable under perturbation, and recovers true matches under finite-sample margin conditions. Empirically it outperformed decoder-vector and LLM-based baselines and captured subtle functional distinctions between related features, and it compressed large feature circuits into interpretable supernodes automatically. The limitation is that this is interpretability tooling: the paper demonstrates better feature matching and circuit compression, not that downstream interpretability claims become more accurate.