Search Results for author: Guimin Chen

Found 9 papers, 6 papers with code

Improving Federated Learning for Aspect-based Sentiment Analysis via Topic Memories

no code implementations EMNLP 2021 Han Qin, Guimin Chen, Yuanhe Tian, Yan Song

Aspect-based sentiment analysis (ABSA) predicts the sentiment polarity towards a particular aspect term in a sentence, which is an important task in real-world applications.

Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +2

Qtrade AI at SemEval-2022 Task 11: An Unified Framework for Multilingual NER Task

no code implementations SemEval (NAACL) 2022 Weichao Gan, Yuanping Lin, Guangbo Yu, Guimin Chen, Qian Ye

This paper describes our system, which placed third in the Multilingual Track (subtask 11), fourth in the Code-Mixed Track (subtask 12), and seventh in the Chinese Track (subtask 9) in the SemEval 2022 Task 11: MultiCoNER Multilingual Complex Named Entity Recognition.

Data Augmentation named-entity-recognition +2

Dependency-driven Relation Extraction with Attentive Graph Convolutional Networks

1 code implementation ACL 2021 Yuanhe Tian, Guimin Chen, Yan Song, Xiang Wan

Syntactic information, especially dependency trees, has been widely used by existing studies to improve relation extraction with better semantic guidance for analyzing the context information associated with the given entities.

Relation Relation Classification

Aspect-based Sentiment Analysis with Type-aware Graph Convolutional Networks and Layer Ensemble

2 code implementations NAACL 2021 Yuanhe Tian, Guimin Chen, Yan Song

It is popular that neural graph-based models are applied in existing aspect-based sentiment analysis (ABSA) studies for utilizing word relations through dependency parses to facilitate the task with better semantic guidance for analyzing context and aspect words.

Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA)

Joint Aspect Extraction and Sentiment Analysis with Directional Graph Convolutional Networks

1 code implementation COLING 2020 Guimin Chen, Yuanhe Tian, Yan Song

End-to-end aspect-based sentiment analysis (EASA) consists of two sub-tasks: the first extracts the aspect terms in a sentence and the second predicts the sentiment polarities for such terms.

Aspect-Based Sentiment Analysis Aspect Extraction +1

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