Honglei Guo


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Domain-Invariant Feature Distillation for Cross-Domain Sentiment Classification
Mengting Hu | Yike Wu | Shiwan Zhao | Honglei Guo | Renhong Cheng | Zhong Su
Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)

Cross-domain sentiment classification has drawn much attention in recent years. Most existing approaches focus on learning domain-invariant representations in both the source and target domains, while few of them pay attention to the domain-specific information. Despite the non-transferability of the domain-specific information, simultaneously learning domain-dependent representations can facilitate the learning of domain-invariant representations. In this paper, we focus on aspect-level cross-domain sentiment classification, and propose to distill the domain-invariant sentiment features with the help of an orthogonal domain-dependent task, i.e. aspect detection, which is built on the aspects varying widely in different domains. We conduct extensive experiments on three public datasets and the experimental results demonstrate the effectiveness of our method.

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Learning to Detect Opinion Snippet for Aspect-Based Sentiment Analysis
Mengting Hu | Shiwan Zhao | Honglei Guo | Renhong Cheng | Zhong Su
Proceedings of the 23rd Conference on Computational Natural Language Learning (CoNLL)

Aspect-based sentiment analysis (ABSA) is to predict the sentiment polarity towards a particular aspect in a sentence. Recently, this task has been widely addressed by the neural attention mechanism, which computes attention weights to softly select words for generating aspect-specific sentence representations. The attention is expected to concentrate on opinion words for accurate sentiment prediction. However, attention is prone to be distracted by noisy or misleading words, or opinion words from other aspects. In this paper, we propose an alternative hard-selection approach, which determines the start and end positions of the opinion snippet, and selects the words between these two positions for sentiment prediction. Specifically, we learn deep associations between the sentence and aspect, and the long-term dependencies within the sentence by leveraging the pre-trained BERT model. We further detect the opinion snippet by self-critical reinforcement learning. Especially, experimental results demonstrate the effectiveness of our method and prove that our hard-selection approach outperforms soft-selection approaches when handling multi-aspect sentences.


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Sentence Compression for Target-Polarity Word Collocation Extraction
Yanyan Zhao | Wanxiang Che | Honglei Guo | Bing Qin | Zhong Su | Ting Liu
Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers


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Domain Adaptation with Latent Semantic Association for Named Entity Recognition
Honglei Guo | Huijia Zhu | Zhili Guo | Xiaoxun Zhang | Xian Wu | Zhong Su
Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics