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| Log-Loss（交差エントロピー損失）× | F1スコア× | |
|---|---|---|
| 分野 | モデル評価 | モデル評価 |
| 系統 | MCDM | MCDM |
| 提唱年≠ | 1990s | 1979 |
| 提唱者≠ | Information theory and machine learning literature | C. J. van Rijsbergen |
| 種類≠ | Loss function | Evaluation metric |
| 原典≠ | Goodfellow, I., Bengio, Y., & Courville, A. (2016). Deep Learning. MIT Press. link ↗ | van Rijsbergen, C. J. (1979). Information Retrieval (2nd ed.). Butterworth-Heinemann. link ↗ |
| 別名 | Cross-Entropy Loss, Logloss | F-measure, Harmonic Mean |
| 関連≠ | 3 | 5 |
| 概要≠ | Log-loss measures the difference between predicted probabilities and actual labels, penalizing confident wrong predictions more than uncertain ones. It is a standard loss function in machine learning optimization and evaluates probabilistic classifier calibration. | The F1-score is the harmonic mean of precision and recall, providing a single metric that balances both concerns. It was introduced by van Rijsbergen in information retrieval and has become a standard metric for evaluating classification models where both precision and recall are important. |
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