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Syntax-Aware Neural Semantic Role Labeling

AAAI 2019 · Label-efficient and robust learning › Recognition and long-tail · approach: Multilingual language representation pretraining

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add dependency-tree syntax representations using SDPBaseline SRL model · CoNLL-2005 CombinedF1: 84.8 -> 85.5Helped
Add tree-based position featuresBaseline SRL model · CoNLL-2005 CombinedF1: 84.8 -> 85.6Helped
Add pattern embeddingsBaseline SRL model · CoNLL-2005 CombinedF1: 84.8 -> 85.1Helped
Add predicate-independent Tree-GRU representationsBaseline SRL model with ELMo · CoNLL-2005 WSJ TestF1: 86.3 -> 86.2Hurt
Add predicate-independent Tree-GRU representationsBaseline SRL model with ELMo · CoNLL-2005 CombinedF1: 84.8 -> 84.9; p > 0.05No clear effect
Add the four syntax-aware models as an ensemble instead of using the five-model TPF ensembleSRL ensemble with ELMo · CoNLL-2005 CombinedF1: 86.0 -> 86.6; 0.6Helped
Use gold-standard dependency trees instead of automatic parsesTPF · CoNLL-2005 CombinedF1: 81.6 -> 88.3; 6.7Helped
Use gold-standard dependency trees instead of automatic parsesTPF + ELMo · CoNLL-2005 CombinedF1: 84.8 -> 89.9; 5.1Helped
Add syntax-aware representationsSRL models · Long-distance arguments in CoNLL-2005F1Helped
Add syntax-aware representationsSRL models · CoNLL-2005 CombinedF1: 0.6 ~ 1.0Helped

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