Author

Mantas Lukauskas

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Preprint Jul 2026

Lost in Compression: A Controlled Cross-Lingual Audit of Extractive Prompt Compressors

A translate-then-compress pipeline matches or beats native compression at roughly half the token cost in three of five tested languages, and safe compression budgets are much smaller outside English.

Mantas Lukauskas · 1 citation · ⚡1

#natural language process... Review Jul 2026

Plausible but Not Valid: A Psychometric Audit of LLMs as Synthetic Survey Respondents

Large language models (LLMs) are increasingly used as synthetic survey respondents, but existing evaluations ask whether answers look plausible at the individual level. We argue the right question is psychometric: do LLMs preserve the joint distribution, latent structure, reliability, mediation pathways, and demographi...

Mantas Lukauskas, Viktorija Šarkauskaitė · 0 citations