Adam Jardine: A weak but flexible logic for modeling phonological processes

Adam Jardine: A weak but flexible logic for modeling phonological processes

🎙 Adam Jardine 👥 3K 📅 April 1, 2026 ⏱ 47 min 👁 42 📄 expert opinion 🧭 2026-08-16
Available in: English (current) Français

Keywords

phonologysubsequential functionsBoolean monadic recursive schemesfinite-state transducerslearnability

Summary

Adam Jardine presents Boolean monadic recursive schemes (BMRS), a restricted fragment of recursive programs that provides a logical characterization of subsequential functions. He motivates the work with phonological examples, such as English plural alternations and long-distance consonant harmony in Kongo, illustrating the need for a computationally restrictive yet flexible framework. The talk traces the history from SPE rewrite rules to finite-state transducers and the subsequential hypothesis by Heinz and Lai. Jardine explains that BMRS capture exactly the subsequential functions when restricted to one direction, offering a logical alternative to transducers that aligns with phonological representations like features and syllables. He discusses the collaborative development of BMRS and ongoing work on learning with BMRS. The presentation is technical, aimed at an audience familiar with formal language theory and logic, and includes references to key papers and results.

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Critical Evaluation

Value of the Information & Strength of the Argument

The talk provides a clear and well-structured argument for the use of BMRS in phonology. It connects computational constraints to empirical observations, such as the absence of certain phonological patterns, and argues that subsequential functions are a plausible characterization. The presentation includes concrete examples and references to prior work, strengthening the argument. However, the talk is an overview and does not provide full formal proofs, which are available in the cited papers.

Scientific Rigor, Source Quality, Title Accuracy

The speaker cites several key works, including Johnson (1972), Kaplan and Kay, Heinz and Lai (2013), and Büchi’s theorem. The sources are relevant and appear credible. The title accurately reflects the content. The talk is a seminar presentation, so the rigor is appropriate for that format, but it is not a peer-reviewed publication.

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Title / Content Match

The title accurately reflects the content: the talk introduces Boolean monadic recursive schemes as a logic for modeling phonological processes.

Quality & Reliability

8/10

Talk by an associate professor presenting collaborative research, with references to published work and formal results. The presentation is technical and appears rigorous, but the video is a seminar recording with limited production and no peer review in this format.

Key Moments

Cited Sources

  • Slides for the talk — Mentioned in the talk as available on the speaker's website
  • Johnson (1972) - Formal aspects of phonological description — Cited as showing SPE rules are describable by finite-state transducers
  • Heinz & Lai (2013) - Vowel harmony and subsequentiality — Cited as proposing the subsequential hypothesis for phonology
  • Büchi's theorem — Cited as showing regular languages are exactly those definable in MSO logic

Concurring Sources

  • Jardine, Chandlee, & Bascara (2020) - Boolean monadic recursive schemes — The paper introducing BMRS and their characterization of subsequential functions
  • Chandlee & Jardine (2021) - Applications to phonology — Paper showing the usefulness of BMRS for describing phonological processes

Contribution & Novelties

The talk presents BMRS as a novel logical framework for modeling phonological processes, providing a logical characterization of subsequential functions. This fills a gap in the literature and offers a more linguistically natural representation than transducers. The ongoing work on learning with BMRS is also highlighted.

Pour aller plus loin :

80 words

Radar Profile

The radar profile shows high scores in technical level and information quality, with moderate scores in quantity and reliability. This indicates a technically dense presentation with solid content, but limited in breadth and with some reliance on unpublished or informal sources.

Reliability 8/10