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Mika Okamoto

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#machine learning Preprint Jun 2026

Capability Provenance in Language Models: A Case Study in Social Reasoning

We use training-data attribution as an interpretable tool for capability discovery, mapping which regions of the pretraining corpus support social reasoning versus STEM reasoning in OLMo3-7B. Training-data attribution measures how strongly each training document influences a model's predictions on a benchmark, but docu...

Glenn Scott Matlin, Chandreyi Chakraborty, Saehee Eom et al. · 0 citations
#artificial intelligence Preprint Sep 2026

PACT: Can Enterprise AI Assistants Be Trusted Under Pressure?

This work introduces PACT (Pressure-Applied Compliance Testing), a benchmark for rule-following under pressure in AI agents assisting employees in daily tasks across twelve regulated enterprise domains and forty-eight scenarios, each set in a realistic multi-turn conversation.

Mika Okamoto, Ansel Kaplan Erol · 0 citations
#artificial intelligence Preprint Sep 2026

Agent Memory Is a Surface for Endogenous Authorization Laundering

This work evaluates five LLMs as memory writers and two as executors across procurement, cybersecurity, and finance and introduces EAL-Bench, which measures how accurately persistent memory preserves evolving authorization state and whether errors propagate to downstream unauthorized actions.

Tommaso Cerruti, Mika Okamoto, Ansel Kaplan Erol · 4 citations · ⚡1

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