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| Node | Input feature numbers | Optimal feature subsets * | Effectiveness (%) |
|---|---|---|---|
| Node 1 | 111 | S1T1,S1T5,S1F4,S2T1,S3T1,S3T3,S2F3,S3E8 | 7.21 |
| Node 2 | 49 | D5F4,D5E1 | 4.08 |
| Node 3 | 12 | D2T4,D3F3,D4T1,D5E5 | 33.33 |
*: Meaning of features were defined in HRV Measurement; Effectiveness is ratio of number of selected features to number of input features at each node.
