Table 2: Performance comparison of Zheng classification models based on different datasets.

GroupDataset1Dataset2Dataset3Dataset4 (PCA)

Average precision 0.84230.85340.86260.8735
Coverage 0.39320.39250.37860.3604
Hamming loss 0.26210.26840.24280.2228
One error 0.24540.20890.19960.1982
Rank loss 0.19440.18750.17680.1543

Note: dataset1, inquiry information; dataset2, time-domain variables of pulse and dataset1; dataset3, RQA variables of pulse and dataset1; dataset4, four major principal components of RQA variables and dataset1.