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SG-Net: Syntax-Guided Machine Reading Comprehension

AAAI 2020 · Architectures and efficiency › Attention and transformers · approach: Long-context KV and memory attention · 199 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add syntax-guided self-attention with dual-context aggregationBERT whole word masking · SQuAD 2.0 devEM: 84.1 -> 85.1Helped
Add syntax-guided self-attention with dual-context aggregationBERT whole word masking · SQuAD 2.0 devF1: 86.8 -> 87.9Helped
Add syntax-guided self-attention with dual-context aggregationBERT whole word masking · RACEaccuracy: 72.6 -> 74.2Helped
Add an answerability verifierSG-Net · SQuAD 2.0 testEM: 85.1 -> 85.2Helped
Add an answerability verifierSG-Net · SQuAD 2.0 testF1: 87.9 -> 87.9Helped
Use an added vanilla attention layer without syntax guidance or dual-context aggregation (ablation)BERT whole word masking · SQuAD 2.0 devEM: 84.1 -> 84.2No clear effect
Use syntax-guided attention only, without vanilla attention in dual-context aggregation (ablation)BERT whole word masking · SQuAD 2.0 devEM: 84.1 -> 84.4Helped
Add vanilla attention representations to syntax-guided attention through dual-context aggregation (ablation)Syntax-guided attention only · SQuAD 2.0 devEM: 84.4 -> 85.1Helped
Replace weighted dual aggregation with concatenation (ablation)SG-Net · SQuAD 2.0 devEM: 85.1 -> 84.5Hurt
Replace weighted dual aggregation with bi-attention (ablation)SG-Net · SQuAD 2.0 devEM: 85.1 -> 84.9Hurt

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