Which Loss Prices the English Share? What Target-Language Validation Loss Can and Cannot See in Continued Pretraining for Language Adaptation, Why Two Training Regimes Disagree About What English Buys, and the Instruments a Mixture Choice Needs

APA

Mahendrakar, P. (2026). Which Loss Prices the English Share? What Target-Language Validation Loss Can and Cannot See in Continued Pretraining for Language Adaptation, Why Two Training Regimes Disagree About What English Buys, and the Instruments a Mixture Choice Needs [Preprint]. Life of Research. https://doi.org/10.5281/zenodo.23501041

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@misc{lor1212026,
  title        = {Which Loss Prices the English Share? What Target-Language Validation Loss Can and Cannot See in Continued Pretraining for Language Adaptation, Why Two Training Regimes Disagree About What English Buys, and the Instruments a Mixture Choice Needs},
  author       = {Pranay Mahendrakar},
  year         = {2026},
  publisher    = {Life of Research},
  doi          = {10.5281/zenodo.23501041},
  url          = {https://lifeofresearch.com/preprints/121},
  keywords     = {continued pretraining, language adaptation, data mixtures, validation loss, in-context learning, catastrophic forgetting, multilingual language models, emergent abilities},
  note         = {LOR-00121}
}

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