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Dmitrij Żatuchin

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#natural language process... Preprint Aug 2026

The Language of the Question Selects the Market: Query Language and Exit IP as Separable Factors in Commercial Recommendations from a Generative Search Interface

A controlled probe of 234 runs against the logged-out ChatGPT web interface and the OpenAI API, collected on 29 and 30 August 2026 across four exit countries and six query languages, shows that language and location are separable and act on different things.

Dmitrij Żatuchin · 1 citation

Demand-Side Measurement for Generative Engine Optimization: Constructing and Validating a Million-Persona, Intent-Annotated Buyer Corpus

This work built and validated PersonaGen-1M, a corpus of 1,031,732 synthetic buyer personas spanning 511 industry labels and 4 market contexts, carrying 19,416,821 structured behavioral attributes, 5,160,046 of them search queries.

Dmitrij Żatuchin, Daniil Dzemesjuk · 1 citation
Jul 2026

Where Does the Noise Come From? A Variance-Components Decomposition of Non-Determinism in LLM Brand Answers

A crossed random-effects (generalizability-theory) decomposition is specified that partitions the total variance of a response-level brand outcome into these four sources, and embeds the components in a decision-study allocation that returns how many repeats, paraphrases, models, and languages to buy for a target reliability.

D. Żatuchin · 3 citations · ⚡1

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