arXiv Computation and Language By Elena Alvarez-Mellado

pylazaro: a Python package for anglicism extraction in Spanish

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pylazaro is an open‑source Python package that automatically extracts unassimilated lexical borrowings—primarily anglicisms—from Spanish text. It provides a unified interface to five sequence‑labeling models trained with different libraries, allowing users to switch models without handling library idiosyncrasies. The package outperforms general‑purpose large language models (F1 <0.40) with its best model achieving an F1 of 0.86, and has been downloaded over 58,000 times, powering the Observatorio Lazaro resource that tracks anglicism usage in Spanish media.

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