Mask past-only covariates during loss computation #379
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shchur
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Nov 17, 2025
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Issue #, if available:
Description of changes: This PR masks rows corresponding to all covariates in the future target. Specifically, this is to avoid the contribution of past-only covariates in loss computation. The previous setup was correct from the perspective of pretraining but I think this makes more sense for fine-tuning.
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