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Saad Aamir

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#machine learning Preprint Jul 2026

No Usable Linear"Capitulation Direction"in Two Small LLMs: A Validation Protocol for Activation-Steering Claims, and a Cross-Family Behavioral Study of Sycophancy Under Pushback

Whether capitulation is linearly decodable from the pre-response residual stream, a prerequisite for steering-vector interventions at that locus, is asked and quantified: substring grading underestimates capitulation by 18-24 percentage points.

Saad Aamir, Muhammad Awais Bin Adil · 0 citations
Preprint Jul 2026

modelDNA: Calibrated Lineage Verification and Merge Decomposition from Sampled Weight Fingerprints

The lineage graph of open-weight language models is self-reported: Hugging Face's base_model metadata field is optional and unverified, and over 60% of Hub models document no parentage at all. Methods for detecting lineage from weights exist in the research literature, but each ships as paper code tied to one signal an...

Muhammad Adil, Saad Aamir · 0 citations

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