Document-level Relation Extraction with Context Guided Mention Integration and Inter-pair Reasoning

no code implementations • 13 Jan 2022 • Chao Zhao, Daojian Zeng, Lu Xu, Jianhua Dai

Document-level Relation Extraction (DRE) aims to recognize the relations between two entities.

Document-level Relation Extraction

Minimize Exposure Bias of Seq2Seq Models in Joint Entity and Relation Extraction

1 code implementation • Findings of the Association for Computational Linguistics 2020 • Ranran Haoran Zhang, Qianying Liu, Aysa Xuemo Fan, Heng Ji, Daojian Zeng, Fei Cheng, Daisuke Kawahara, Sadao Kurohashi

We propose a novel Sequence-to-Unordered-Multi-Tree (Seq2UMTree) model to minimize the effects of exposure bias by limiting the decoding length to three within a triplet and removing the order among triplets.

Joint Entity and Relation Extraction

CopyMTL: Copy Mechanism for Joint Extraction of Entities and Relations with Multi-Task Learning

2 code implementations • 24 Nov 2019 • Daojian Zeng, Ranran Haoran Zhang, Qianying Liu

The model is extremely weak at differing the head and tail entity, resulting in inaccurate entity extraction.

Entity Extraction using GAN Multi-Task Learning +1

Learning the Extraction Order of Multiple Relational Facts in a Sentence with Reinforcement Learning

no code implementations • IJCNLP 2019 • Xiangrong Zeng, Shizhu He, Daojian Zeng, Kang Liu, Shengping Liu, Jun Zhao

Existing works didn{'}t consider the extraction order of relational facts in a sentence.

reinforcement-learning Reinforcement Learning (RL) +1

Extracting Relational Facts by an End-to-End Neural Model with Copy Mechanism

1 code implementation • ACL 2018 • Xiangrong Zeng, Daojian Zeng, Shizhu He, Kang Liu, Jun Zhao

The relational facts in sentences are often complicated.

Feature Engineering Relation Extraction

Distant Supervision for Relation Extraction via Piecewise Convolutional Neural Networks

no code implementations • EMNLP 2015 • Daojian Zeng, Kang Liu, Yubo Chen, Jun Zhao

Feature Engineering Relationship Extraction (Distant Supervised)

Event Extraction via Dynamic Multi-Pooling Convolutional Neural Networks

no code implementations • IJCNLP 2015 • Yubo Chen, Liheng Xu, Kang Liu, Daojian Zeng, Jun Zhao

Event Extraction

Group Non-negative Matrix Factorization with Natural Categories for Question Retrieval in Community Question Answer Archives

no code implementations • COLING 2014 • Guangyou Zhou, Yubo Chen, Daojian Zeng, Jun Zhao

Community Question Answering Information Retrieval +1

Sentiment Classification with Graph Co-Regularization

no code implementations • COLING 2014 • Guangyou Zhou, Jun Zhao, Daojian Zeng

Classification General Classification +2

Relation Classification via Convolutional Deep Neural Network

2 code implementations • COLING 2014 • Daojian Zeng, Kang Liu, Siwei Lai, Guangyou Zhou, Jun Zhao

Classification General Classification +1