Computer Science > Computation and Language
arXiv:2603.09503 (cs)
[Submitted on 10 Mar 2026]
Title:Modelling the Diachronic Emergence of Phoneme Frequency Distributions
View a PDF of the paper titled Modelling the Diachronic Emergence of Phoneme Frequency Distributions, by Ferm\'in Moscoso del Prado Mart\'in and Suchir Salhan
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Abstract:Phoneme frequency distributions exhibit robust statistical regularities across languages, including exponential-tailed rank-frequency patterns and a negative relationship between phonemic inventory size and the relative entropy of the distribution. The origin of these patterns remains largely unexplained. In this paper, we investigate whether they can arise as consequences of the historical processes that shape phonological systems. We introduce a stochastic model of phonological change and simulate the diachronic evolution of phoneme inventories. A naïve version of the model reproduces the general shape of phoneme rank-frequency distributions but fails to capture other empirical properties. Extending the model with two additional assumptions -- an effect related to functional load and a stabilising tendency toward a preferred inventory size -- yields simulations that match both the observed distributions and the negative relationship between inventory size and relative entropy. These results suggest that some statistical regularities of phonological systems may arise as natural consequences of diachronic sound change rather than from explicit optimisation or compensatory mechanisms.
| Subjects: | Computation and Language (cs.CL) |
| Cite as: | arXiv:2603.09503 [cs.CL] |
| (or arXiv:2603.09503v1 [cs.CL] for this version) | |
| https://doi.org/10.48550/arXiv.2603.09503
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From: Fermín Moscoso Del Prado Martín [view email][v1] Tue, 10 Mar 2026 11:06:28 UTC (1,187 KB)
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