The JEPA Predictor: A Transferable Operator for Occluded Feature Completion
Joint-Embedding Predictive Architectures (JEPAs) train a predictor jointly with their encoder, but downstream deployment discards the predictor. This research shows the JEPA predictor serves as a transferable operator for occluded feature completion, adaptable across encoder families via a linear projection, significantly improving occluded classification accuracy.
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[Submitted on 8 Jul 2026]
Title:The JEPA Predictor: A Transferable Operator for Occluded Feature Completion
View a PDF of the paper titled The JEPA Predictor: A Transferable Operator for Occluded Feature Completion, by William Nguyen and 1 other authors
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Abstract:Joint-Embedding Predictive Architectures (JEPAs) train a predictor jointly with their encoder, but downstream deployment discards the predictor and reads features from the encoder alone. The predictor is, by construction, a learned operator from visible-context features to features at masked positions, the structure a partial-view classifier needs. We show that this operator is portable across encoder families. We first establish that, at heavy mask, retaining the frozen predictor on a JEPA encoder substantially closes the accuracy gap against the strongest non-JEPA discriminative baselines. We then bolt the frozen predictors of I-JEPA and V-JEPA 2 onto four non-JEPA hosts (CLIP, DINOv3, DINOv2, MAE) through a single linear projection between feature spaces, fit in closed form on 500 ImageNet-1k images. Across both ImageNet-9 and Stanford Dogs and across three mask fractions, the lift over each host's masked-encoder baseline grows monotonically with the mask fraction K in every host-donor pair. CLIP paired with the I-JEPA predictor recovers most of the accuracy that masking removed on ImageNet-9 at heavy occlusion, and lifts fine-grained Stanford Dogs from 15.9% to 52.1% (+36 pp). The mechanism is identifiable: the projection pays a fixed cost on visible patches and the predictor provides a growing benefit on masked patches; the benefit dominates the heavy-occlusion regime. At low K on fine-grained classification the projection cost exceeds the benefit, defining the boundary where the linear bridge breaks down. The frozen JEPA predictor functions as a portable operator for occluded feature completion across encoder families, requiring no retraining of either model while fitting matched linear probes per mask fraction.
Comments: 12 pages, 3 figures, 5 tables
Subjects:
Computer Vision and Pattern Recognition (cs.CV)
Cite as: arXiv:2607.16274 [cs.CV]
(or arXiv:2607.16274v1 [cs.CV] for this version)
https://doi.org/10.48550/arXiv.2607.16274
arXiv-issued DOI via DataCite
Submission history
From: William Nguyen [view email] [v1] Wed, 8 Jul 2026 10:20:40 UTC (96 KB)
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