Transactions of the Association for Computational Linguistics (Jan 2021)

Optimizing over subsequences generates context-sensitive languages

  • Andrew Lamont

DOI
https://doi.org/10.1162/tacl_a_00382
Journal volume & issue
Vol. 9
pp. 528 – 537

Abstract

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AbstractPhonological generalizations are finite-state. While Optimality Theory is a popular framework for modeling phonology, it is known to generate non-finite-state mappings and languages. This paper demonstrates that Optimality Theory is capable of generating non-context-free languages, contributing to the characterization of its generative capacity. This is achieved with minimal modification to the theory as it is standardly employed.