| Challenge: | Existing tree-based sentence modeling approaches adopt syntactic parsing trees as the explicit structure prior. |
| Approach: | They replace parsing trees with trivial trees to study their effectiveness . they found that tree-based sentence modeling gives better results when crucial words are closer to the final representation . |
| Outcome: | The proposed tree-based sentences have shown better results on many downstream tasks. |
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| Challenge: | Existing tree-based models require handannotated data to be trained. |
| Approach: | They propose a tree-based model that learns its composition function together with its structure. |
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Modularized Syntactic Neural Networks for Sentence Classification (2020.emnlp-main)
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| Challenge: | Existing models for sentence classification use local information of sub-trees, but new models use global context . |
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A Tree-based Decoder for Neural Machine Translation (D18-1)
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| Challenge: | Existing work on adding syntactic information to NMT systems is limited to linguistically-inspired tree structures. |
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Learning Sentence Representations over Tree Structures for Target-Dependent Classification (N18-1)
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Considering Nested Tree Structure in Sentence Extractive Summarization with Pre-trained Transformer (2021.emnlp-main)
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| Challenge: | Sentence extractive summarization shortens a document by selecting sentences for a summary while preserving its important contents. |
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Graph-to-Tree Neural Networks for Learning Structured Input-Output Translation with Applications to Semantic Parsing and Math Word Problem (2020.findings-emnlp)
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| Challenge: | Graph2Tree model encodes graph-structured input and decodes tree-structures output. |
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Structural Neural Encoders for AMR-to-text Generation (N19-1)
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| Challenge: | Abstract Meaning Representation (AMR) graphs are graphs, rather than trees, because they contain reentrant nodes with multiple parents. |
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Top-down Tree Structured Decoding with Syntactic Connections for Neural Machine Translation and Parsing (D18-1)
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You Only Need Attention to Traverse Trees (P19-1)
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| Challenge: | Recent research has focused on sentence representations. |
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Recursive Top-Down Production for Sentence Generation with Latent Trees (2020.findings-emnlp)
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| Challenge: | Various studies have shown that incorporating syntactic structures into recursive encoders can be beneficial for various natural language tasks. |
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