Query Routing Classification on oracle high-contrast queries n=442 (test)
4.733COOracle
Evaluation results
| Method | Links | ||
|---|---|---|---|
| OracleRole=ceiling2026.05 | 4.733 | 0.475 | |
| Logistic RegressionFeatures=TF-IDF char (3–5)grams2026.05 | 4.269 | 0.011 | |
| Logistic RegressionFeatures=surface features2026.05 | 4.26 | 0.002 | |
| Always-HyDERole=baseline2026.05 | 4.258 | — | |
| Logistic RegressionFeatures=TF-IDF word (1–2)grams2026.05 | 4.24 | 0.018 | |
| Gradient Boosting MachineFeatures=multilingual embed.2026.05 | 4.184 | 0.074 | |
| Gradient Boosting MachineFeatures=TF-IDF + surface2026.05 | 4.177 | 0.081 | |
| Logistic RegressionFeatures=multilingual embed.2026.05 | 3.85 | 0.408 |