EnComp: Lightweight Encoder-Only Context Compression for Retrieval-Augmented Question Answering
This work proposes a lightweight encoder-only framework for query-driven sentence pruning that preserves answer-critical evidence while aggressively reducing irrelevant context, and learns marginal contribution scores for sentences using counterfactual training signals and optimizes a contrastive ranking objective.
Thao Do, D. Tran, A. Vo et al.
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