Research Article
A Risk-Free Discount Rate Prediction Model for Mineral Project Evaluation Using a Hybrid Discrete Wavelet Transform and Artificial Neural Network
Table 4
BPNN optimal training and testing results.
| | Frequency component | Hidden neurons | Training | Testing | | R | RMSE | R | RMSE |
| | a4 | 18 | 0.9990 | 5.198 × 10−4 | 0.9990 | 6.848 × 10−4 | | d1 | 18 | 0.9990 | 1.800 × 10−3 | 0.9990 | 3.140 × 10−4 | | d2 | 18 | 1.0000 | 1.450 × 10−4 | 1.0000 | 1.875 × 10−6 | | d3 | 18 | 1.0000 | 2.570 × 10−4 | 1.0000 | 8.464 × 10−5 | | d4 | 18 | 1.0000 | 1.354 × 10−4 | 1.0000 | 1.511 × 10−5 |
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