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Comparison of performance of ridge regressions for inferring severity of PD using feature extracted from openSMILE, the proposed model, and a combination of both, where † denotes statistically significant results.
| Features | Mean Absolute Error |
|---|---|
| Chance | 8.0 |
| OpenSMILE | 5.9† |
| Harmonic Model | 5.5† |
| Hybrid | 5.7† |
