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Random-token replacement reduces LLM memorization and validation loss

A new research paper explores the impact of random-token replacement as a data augmentation technique for large language models. The study demonstrates that this method can reduce validation loss by shrinking predictions towards the corpus average, particularly benefiting models that tend to memorize data. The research introduces a decomposition to separate validation loss into approximation, estimation, and memorization components, showing that replacement's cost is bias-related while its benefit is tied to reducing memorization. The technique proved effective across various corpora, including Korean and Japanese text, and significantly lowered final loss on most tested datasets, with notable exceptions for highly redundant data like program-generated JSON. AI

IMPACT This technique could help mitigate issues of data scarcity and model memorization in LLMs, potentially leading to more efficient and robust training.

RANK_REASON Research paper published on arXiv detailing a new technique for LLM training. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Random-token replacement reduces LLM memorization and validation loss

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Research paper published on arXiv detailing a new technique for LLM training. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Wonsup Shin, Jingu Kim ·

    Benefit and Cost of Random-Token Replacement under Repeated Data: A Known-Entropy Decomposition and Evidence from Ten Real Corpora

    arXiv:2610.27590v1 Announce Type: cross Abstract: When unique pretraining data is scarce, models see the same tokens many times and are thought to memorize. Random-token replacement, an input-corruption augmentation, is one remedy reported to lower validation loss, but a lower lo…