| Challenge: | Experimental results show that SANs can't encode positions of input words . SAN's are currently lacking in encoding positions of words based on position-unaware "bagof-words" theory . |
| Approach: | They propose to augment SANs with structural position representations to capture latent structure of input sentence. |
| Outcome: | The proposed approach consistently outperforms the sequential representations on translation tasks. |
Similar Papers
Self-Attention with Cross-Lingual Position Representation (2020.acl-main)
Copied to clipboard
| Challenge: | Position encoding (PE) is used to preserve word order information for natural language processing tasks, generating fixed position indices for input sequences. |
| Approach: | They propose to augment SANs with cross-lingual position representations to model bilingually aware latent structure for the input sentence. |
| Outcome: | The proposed model significantly improves translation quality over baselines on EnglishGerman, JapaneseEnglish, and ChineseEnglish translation tasks. |
Self-Attention with Relative Position Representations (N18-2)
Copied to clipboard
| Challenge: | Recent approaches to sequence to sequence learning leverage recurrence, convolution, attention or combination of recurrent and convolutional neural networks. |
| Approach: | They propose an approach that extends the self-attention mechanism to consider representations of relative positions, or distances between sequence elements. |
| Outcome: | The proposed approach yields 1.3 BLEU and 0.3 BLUE on translation tasks . it is based on a relation-aware self-attention mechanism that can generalize to arbitrary graph-labeled inputs. |
Convolutional Self-Attention Networks (N19-1)
Copied to clipboard
| Challenge: | Existing models of self-attention networks lack the ability to capture dependencies regardless of distance and can be enhanced with multi-head attention. |
| Approach: | They propose a convolutional self-attention network which can be enhanced by multi-head attention by allowing the model to attend to information from different representation subspaces. |
| Outcome: | The proposed model outperforms existing models on improving locality of SANs on different language pairs and model settings. |
Towards Better Modeling Hierarchical Structure for Self-Attention with Ordered Neurons (D19-1)
Copied to clipboard
| Challenge: | Recent studies have shown that a hybrid of self-attention networks (SANs) and recurrent neural networks (RNNs) outperforms both individual architectures, while not much is known about why the hybrid models work. |
| Approach: | They propose to use an advanced variant of self-attention networks (SANs) to enhance the strength of hybrid models by introducing a syntax-oriented inductive bias to perform tree-like composition. |
| Outcome: | The proposed model outperforms both individual models and a standard hybrid model on a machine translation task. |
Convolutions and Self-Attention: Re-interpreting Relative Positions in Pre-trained Language Models (2021.acl-long)
Copied to clipboard
| Challenge: | Recent work has shown that convolutions have been successful in natural language learning. |
| Approach: | They propose a convolutional approach to construct relative position embeddings in self-attention layers and propose 'compact attention' they propose multiple ways to integrate convolutions into Transformer self- attention. |
| Outcome: | The proposed composite attention improves performance on multiple downstream tasks, replacing absolute position embeddings, and is more expressive than convolutions in NLP. |
Syntax-Enhanced Self-Attention-Based Semantic Role Labeling (D19-1)
Copied to clipboard
| Challenge: | Abstract: Syntax is the bridge to semantics, but recent studies have discussed the necessity of syntax in the context of SRL. |
| Approach: | They propose a syntax-enhanced self-attention model that incorporates syntactic knowledge into the SRL task effectively. |
| Outcome: | The proposed model achieves state-of-the-art for the Chinese SRL task on the CoNLL-2009 dataset. |
Learning Sentence Representations over Tree Structures for Target-Dependent Classification (N18-1)
Copied to clipboard
| Challenge: | Existing work on tree structures uses syntactic parsers or Treebank annotations to perform target-dependent classifications. |
| Approach: | They propose a reinforcement learning based approach which automatically induces target-specific sentence representations over tree structures. |
| Outcome: | The proposed model gives superior performance on two benchmark tasks compared to previous work on parsed trees . |
How Does Selective Mechanism Improve Self-Attention Networks? (2020.acl-main)
Copied to clipboard
| Challenge: | Experimental results show that selective SANs outperform the standard SAN by paying more attention to content words that contribute to the meaning of the sentence. |
| Approach: | They propose to implement selective SANs with a flexible Gumbel-Softmax to improve word order encoding and structure modeling. |
| Outcome: | The proposed system outperforms the standard SANs on several representative NLP tasks including natural language inference, semantic role labelling, and machine translation. |
Linguistically-Informed Self-Attention for Semantic Role Labeling (D18-1)
Copied to clipboard
| Challenge: | Existing models of semantic role labeling use no explicit linguistic features. prior work has shown that syntax trees can dramatically improve SRL decoding. |
| Approach: | They propose a neural network model that incorporates syntax using only raw tokens . they show that LISA out-performs the state-of-the-art with contextually-encoded word representations a 1.0 F1 on newswire and 2.0 F1 in out-of domain text . |
| Outcome: | The proposed model outperforms the state-of-the-art model with word embeddings and predicted predicates. |
Rethinking Self-Attention: Towards Interpretability in Neural Parsing (2020.findings-emnlp)
Copied to clipboard
| Challenge: | Recent work shows that attention mechanisms provide arguably explainable attention distributions that can help to interpret predictions. |
| Approach: | They propose a new self-attention layer where attention heads represent labels. |
| Outcome: | The proposed model obtains state-of-the-art results on the Penn Treebank and Chinese Treebank. |