Alveolar-to-rhotic coarticulation in North American English: A preliminary EPG study
Bibliographic record
Abstract
This paper reports results of an electropalatographic (EPG) study of alveolar-torhotic coarticulation in North American English. Data with alveolars /d/ and /n/ occurring in various rhotic contexts were collected from a single female speaker. The results showed a continuum of backing of the primary constriction from alveolar to post-alveolar or retroflex as a function of the absence or presence of one or more rhotic segments in the word and their proximity to the alveolar. These findings are interpreted as coarticulation of alveolars to the more constrained rhotic approximant and rhotacized vowels, and to different degrees of overlap of alveolar and rhotic gestures. The results, albeit preliminary, provide evidence for retroflexed allophones of English alveolars and point to articulatory sources of phonological patterns of retroflexion.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".