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Detecția în afara distribuției (Out-of-Distribution Detection)×Isolation Forest×Calibrarea modelului×
DomeniuÎnvățare automatăÎnvățare automatăÎnvățare automată
FamilieMachine learningMachine learningMachine learning
Anul apariției201720082017
Autorul originalHendrycks & GimpelLiu, F.T., Ting, K.M. & Zhou, Z.-H.Platt; Guo et al.
TipReliability and safety method for neural networksUnsupervised ensemble (random partitioning trees)Post-hoc probability correction technique
Sursa seminalăHendrycks, D., & Gimpel, K. (2017). A baseline for detecting misclassified and out-of-distribution examples in neural networks. International Conference on Learning Representations. link ↗Liu, F.T., Ting, K.M. & Zhou, Z.-H. (2008). Isolation Forest. IEEE ICDM, 413–422. DOI ↗Guo, C., Pleiss, G., Sun, Y., & Weinberger, K. Q. (2017). On calibration of modern neural networks. International Conference on Machine Learning, 1321–1330. link ↗
Denumiri alternativeOOD Detection, Novelty Detection, Open-Set Recognition, Dağılım Dışı TespitIsolation Forest (Aykırı Değer Tespiti), iForest, isolation forest anomaly detectionClassifier Calibration, Probability Calibration, Score Calibration, Model Kalibrasyonu
Înrudite353
RezumatOut-of-Distribution (OOD) detection is a set of techniques that identify when a deployed machine learning model receives inputs that differ significantly from its training data distribution. Introduced as a formal problem by Hendrycks and Gimpel in 2017, these methods enable models to flag unfamiliar inputs rather than silently produce unreliable predictions, making them foundational to trustworthy and safe AI deployment in high-stakes domains.Isolation Forest is an unsupervised machine-learning method for anomaly and outlier detection, introduced by Liu, Ting and Zhou in 2008, that isolates anomalies through random partitioning of the data. It works without any labelled anomaly data and scales to high-dimensional datasets.Model calibration is a post-hoc technique that adjusts the probability outputs of a trained classifier so that predicted confidence scores match empirical outcome frequencies. A classifier is said to be perfectly calibrated if, among all predictions made with confidence p, exactly a fraction p of them are correct. Systematic miscalibration of modern deep neural networks was rigorously documented by Guo et al. (2017), who showed that networks trained with standard cross-entropy loss tend to be overconfident, and proposed temperature scaling as a simple, effective remedy.
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ScholarGateCompară metode: Out-of-Distribution Detection · Isolation Forest · Model Calibration. Preluat la 2026-06-19 de pe https://scholargate.app/ro/compare