Liwei Chen


2018

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Exploiting Rich Syntactic Information for Semantic Parsing with Graph-to-Sequence Model
Kun Xu | Lingfei Wu | Zhiguo Wang | Mo Yu | Liwei Chen | Vadim Sheinin
Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing

Existing neural semantic parsers mainly utilize a sequence encoder, i.e., a sequential LSTM, to extract word order features while neglecting other valuable syntactic information such as dependency or constituent trees. In this paper, we first propose to use the syntactic graph to represent three types of syntactic information, i.e., word order, dependency and constituency features; then employ a graph-to-sequence model to encode the syntactic graph and decode a logical form. Experimental results on benchmark datasets show that our model is comparable to the state-of-the-art on Jobs640, ATIS, and Geo880. Experimental results on adversarial examples demonstrate the robustness of the model is also improved by encoding more syntactic information.

2015

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Learn to Solve Algebra Word Problems Using Quadratic Programming
Lipu Zhou | Shuaixiang Dai | Liwei Chen
Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing

2014

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Joint Inference for Knowledge Base Population
Liwei Chen | Yansong Feng | Jinghui Mo | Songfang Huang | Dongyan Zhao
Proceedings of the 2014 Conference on Empirical Methods in Natural Language Processing (EMNLP)

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Encoding Relation Requirements for Relation Extraction via Joint Inference
Liwei Chen | Yansong Feng | Songfang Huang | Yong Qin | Dongyan Zhao
Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

2012

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Explore Person Specific Evidence in Web Person Name Disambiguation
Liwei Chen | Yansong Feng | Lei Zou | Dongyan Zhao
Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning

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Towards Automatic Construction of Knowledge Bases from Chinese Online Resources
Liwei Chen | Yansong Feng | Yidong Chen | Lei Zou | Dongyan Zhao
Proceedings of ACL 2012 Student Research Workshop