Best model: CREDIT_SPREAD_LAG1 + USDKRW + HOUSING_PRICE (R²=0.646) - 31 raw vars → 80+ features (DIFF/LAG1/PCT/spreads) - 2267 valid combos searched (collinearity filtered) - All Top 10 sign-consistent - Zt sign corrected: Z+ = 호황 (Belkin convention)
15 KiB
15 KiB