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Theodore O. Cochran

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#natural language process... Preprint May 2026

Single-Round Vector RAG vs an LLM-Compiled Wiki: A Preregistered Comparison on a Small Multi-Domain Research Corpus

A comparison of two ways to help an LLM answer questions over a small research corpus: single-round Vector RAG and an LLM-compiled markdown wiki browsed by a tool-using agent, which system appears to win depends on the retrieval baseline, the scoring method, and the judge.

Theodore O. Cochran · 2 citations
#machine learning Preprint Sep 2026

Chain-of-Thought Entropy as a Reliability Signal: A Preregistered Reproduction

This empirical study is an independent reproduction of the dissociation Zhao reported in 2026, where the shape of a large language model's chain-of-thought entropy trajectory predicts whether the final answer is correct, while the magnitude of its total entropy drop does not.

Theodore O. Cochran · 0 citations
#artificial intelligence Preprint Aug 2026

No Detectable Change in Side-Level WER from Prompt-Level Context: A Preregistered Ablation on a Production Oral-History Corpus

Evaluating context mechanisms requires sequence-aligned term-level, insertion, and speaker-label measures alongside aggregate accuracy, and sequence-alignment analysis found a small improvement on complete context-listed phrases, too small to materially change side-level WER, and for Gemini coexisting with worsened unl...

Theodore O. Cochran, Stephanie Dodson, Keith Nore · 0 citations

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