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Bich-Liên Doan

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#machine learning Preprint Oct 2026

The Blind Spot Paradox: When Adaptive Classifiers Defeat Drift Detectors

Monitoring concept drift from an adaptive classifier's error stream creates an operational conflict with the model's own update loop. When internal adaptation outpaces evidence accumulation, accuracy recovers before cumulative detectors (CUSUM, Page-Hinkley) can reach threshold. Instrumenting an Adaptive Random Forest...

Raphaël Minato, Fabrice Popineau, Arpad Rimmel et al. · 0 citations
#machine learning Preprint Oct 2026

Mitigating Convergence Collapse in Fixed-Target Anomaly Detectors via Kernel-Anchored Locality Regularization

A family of tabular anomaly detectors trains a neural map toward a fixed target under squared-error loss and scores anomalies by the test-time residual; contraction matching, one-step rectified flow, and reconstruction autoencoders all fit this template. We characterize a convergence collapse: better optimization makes...

José Lucas De Melo Costa, Fabrice Popineau, Arpad Rimmel et al. · 0 citations
#machine learning Preprint Oct 2026

Drive vs. Decay: On the Training Dynamics of Joint-Embedding Predictive Architectures

Joint-Embedding Predictive Architectures (JEPAs) are prone to representation collapse, typically mitigated through empirical heuristics. We develop an early-training stability theory that unifies these heuristics. Linearising the coupled JEPA gradient flow around the trivial fixed point reveals two competing effects: a...

José Lucas De Melo Costa, S. Ahn, Fabrice Popineau et al. · 0 citations
Jul 2026

Knowledge-Informed Local Causal Discovery of Optimal Adjustment Sets

Local causal discovery is a scalable alternative to global structure learning. However, it can struggle to identify valid adjustment sets in data-scarce settings because of finite-sample uncertainty, incomplete local neighborhoods, and unresolved Markov equivalence. Although many application domains provide structured...

S. Ahn, A. Leite, José Lucas De Melo Costa et al. · 0 citations

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