2021

UniDrop: A Simple yet Effective Technique to Improve Transformer without Extra Cost [Paper] [中文解读] [Slides] [Poster] [BibTex]
Zhen Wu, Lijun Wu, Qi Meng, Yingce Xia, Shufang Xie, Tao Qin, Xinyu Dai, Tie-Yan Liu
Summary: UniDrop integrated various dropout techniques and effectively improved Transformer performance.
(Oral) NAACL-HLT, 2021.

2020

Grid Tagging Scheme for Aspect-oriented Fine-grained Opinion Extraction [Paper] [Datasets and Code] [中文解读] [BibTex]
Zhen Wu, Chengcan Ying, Fei Zhao, Zhifang Fan, Xinyu Dai, Rui Xia
Summary: A poweful and unified tagging scheme to address fine-grained opinion extraction in the form of opinion pair or opinion triplet.
EMNLP Findings, 2020.

Latent Opinions Transfer Network for Target-Oriented Opinion Words Extraction [Paper] [Code] [中文解读] [BibTex]
Zhen Wu*, Fei Zhao*, Xin-Yu Dai, Shujian Huang, Jiajun Chen
Summary: Transter opinion knowledge from resource-rich document-level data to improve target-oriented opinion words extraction.
(Oral) AAAI, 2020.

Attention Transfer Network for Aspect-level Sentiment Classification [Paper] [Code] [中文解读] [BibTex]
Fei Zhao*, Zhen Wu*, Xin-Yu Dai
Summary: Transter opinion knowledge from resource-rich document-level data to improve aspect-level sentiment classification.
COLING, 2020.

Transformer-based Multi-Aspect Modeling for Multi-Aspect Multi-Sentiment Analysis [Paper] [Code] [BibTex]
Zhen Wu*, Chengcan Ying*, Xinyu Dai, Shujian Huang, Jiajun Chen
Summary: A simple yet effective method to improve and accelerate multi-aspect multi-sentiment classification.
NLPCC Evaluation, 2020.

Opinion Transmission Network for Jointly Improving Aspect-oriented Opinion Words Extraction and Sentiment Classification [Paper] [BibTex]
Chengcan Ying*, Zhen Wu*, Xinyu Dai, Shujian Huang, Jiajun Chen
Summary: A joint method to improve both target-oriented opinion words extraction and aspect-level sentiment classification.
NLPCC, 2020.

2019

Target-oriented Opinion Words Extraction with Target-fused Neural Sequence Labeling [Paper] [Datasets and Code] [中文解读] [Talk] [BibTex]
Zhifang Fan, Zhen Wu, Xin-Yu Dai, Shujian Huang, Jiajun Chen
Summary: Proposed a new ABSA subtask Target-oriented Opinion Words Extraction and released the datasets of opinion pair (aspect term, opinion term).
(Oral) NAACL-HLT, 2019.

2018

Improving Review Representations with User Attention and Product Attention for Sentiment Classification [Paper] [Code] [Poster] [BibTex]
Zhen Wu, Xin-Yu Dai, Cunyan Yin, Shujian Huang, Jiajun Chen
Summary: Modeling reviews respectively from user's perspective and product's perspective.
(Oral) AAAI, 2018.

Improving aspect identification with reviews segmentation [Paper] [BibTex]
Tianhao Ning, Zhen Wu, Jiajun Huang, Shujian Huang, Jiajun Chen
Summary: A self-enhancement method based on reviews segmentation.
NLPCC, 2018.