Social intelligence in LLMs, measured with human annotators rather than another model
AspireAI community · arXiv
LLMs are deployed in counselling, companionship and tutoring roles, but evaluations of social skill are fragmented across isolated capabilities and single scenarios, with evaluation reliability largely unverified. SocialArena defines social intelligence along three dimensions - role-playing ability, mental state reasoning and behavioural reasoning - and operationalises it through a role-playing dialogue paradigm with explicit character thinking, so all three can be assessed together in something closer to a real interaction. A U-TRIMF framework guides the synthesis of social contexts so conclusions are not confined to a few scenarios. Reliability comes from human annotation: $132.4K spent recruiting and training annotators for a human-annotated arena-style protocol where they compare model responses and give preference labels with natural-language critiques. EMNLP 2026 oral.
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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.