Table 3 Result of combined variable selection method.
| Â | Crude oil price | Aluminum price | Gold price | Iron ore price | Natural gas price | Nickel price | Silver price | USD-PEN | USD-CLP | USD-AUD | USD-CNY |
|---|---|---|---|---|---|---|---|---|---|---|---|
LASSO | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | Â | \(\checkmark\) | Â | Â | Â | Â | \(\checkmark\) |
PCC | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | Â | \(\checkmark\) | \(\checkmark\) | Â | Â | Â | Â |
MIC | \(\checkmark\) | Â | \(\checkmark\) | \(\checkmark\) | Â | \(\checkmark\) | \(\checkmark\) | Â | Â | Â | \(\checkmark\) |
RF | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | Â | \(\checkmark\) | \(\checkmark\) | Â | Â | Â | Â |
