Second-level pseudo-labels generated from coarse 30-second sleep stage labels improve PPG-based four-class sleep staging by 3.7-5.7 pp accuracy across six architectures.
Garcia-Gomez, Shahrad Taheri, Yu Guan, and Luis Fernandez-Luque
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Rethinking PPG-based Sleep Staging: Datasets, Metrics, and Benchmarks
Second-level pseudo-labels generated from coarse 30-second sleep stage labels improve PPG-based four-class sleep staging by 3.7-5.7 pp accuracy across six architectures.