CRAFTER corrects frozen time-series forecasters by mining residual features with an MCTS search and an LLM, gating candidates by validation error, and fitting a small corrector; gains concentrate on weak backbones with residual headroom.
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When Do Corrective Features Help? An Agent for Corrective Feature Discovery on Black-Box Forecasters
CRAFTER corrects frozen time-series forecasters by mining residual features with an MCTS search and an LLM, gating candidates by validation error, and fitting a small corrector; gains concentrate on weak backbones with residual headroom.