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| Log-Loss（交差エントロピー損失）× | 平均絶対誤差 (MAE)× | |
|---|---|---|
| 分野 | モデル評価 | モデル評価 |
| 系統 | MCDM | MCDM |
| 提唱年≠ | 1990s | 1799 |
| 提唱者≠ | Information theory and machine learning literature | Pierre-Simon Laplace |
| 種類≠ | Loss function | Robust distance-based metric |
| 原典≠ | Goodfellow, I., Bengio, Y., & Courville, A. (2016). Deep Learning. MIT Press. link ↗ | Laplace, P. S. (1799). Traité de Mécanique Céleste. Paris: J.B.M. Duprat. link ↗ |
| 別名≠ | Cross-Entropy Loss, Logloss | MAE, L1 error, mean absolute deviation |
| 関連 | 3 | 3 |
| 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. | Mean Absolute Error is a robust metric that measures the average absolute magnitude of prediction errors in regression models. Dating back to Pierre-Simon Laplace's work on observational errors (1799), MAE quantifies typical prediction deviation by averaging the absolute differences between observed and predicted values. |
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