Bibliographic record
Abstract
The erhu is a two-string bowed instrument characterized in Chinese organology as a silk instrument (owing to the traditional string material), and by Hornbostel and Sachs as a spike fiddle. The overall length of the instrument is about 80 cm, and the vibrational length of the strings is around half of that. The soundbox is a tube (hexagonal, octagonal, or cylindrical) of about 13 cm length and 9 cm diameter. One end of the tube is covered by a membrane of tensioned python skin and the other is mostly open, usually with a grille. The two strings are stretched over a small bridge positioned centrally on the membrane. In spite of the great difference in soundbox structure between the erhu and a Western violin, the radiated sounds of the two instruments have a lot in common with each other (and with the human voice). Vibrational and acoustic measurements have been made on several erhus: cavity modes, surface velocities and radiated sound. A straightforward coupled-oscillator model has been found to reproduce many of the measurements, and also to allow mechanical characterization of the membrane in situ.
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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".