Changqin Quan


2014

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Gene–disease association extraction by text mining and network analysis
Changqin Quan | Fuji Ren
Proceedings of the 5th International Workshop on Health Text Mining and Information Analysis (Louhi)

2010

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An Exploration of Features for Recognizing Word Emotion
Changqin Quan | Fuji Ren
Proceedings of the 23rd International Conference on Computational Linguistics (Coling 2010)

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Automatic Annotation of Word Emotion in Sentences Based on Ren-CECps
Changqin Quan | Fuji Ren
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

Textual information is an important communication medium contained rich expression of emotion, and emotion recognition on text has wide applications. Word emotion analysis is fundamental in the problem of textual emotion recognition. Through an analysis of the characteristics of word emotion expression, we use word emotion vector to describe the combined basic emotions in a word, which can be used to distinguish direct and indirect emotion words, express emotion ambiguity in words, and express multiple emotions in words. Based on Ren-CECps (a Chinese emotion corpus), we do an experiment to explore the role of emotion word for sentence emotion recognition and we find that the emotions of a simple sentence (sentence without negative words, conjunctions, or question mark) can be approximated by an addition of the word emotions. Then MaxEnt modeling is used to find which context features are effective for recognizing word emotion in sentences. The features of word, N-words, POS, Pre-N-words emotion, Pre-is-degree-word, Pre-is-negativeword, Pre-is-conjunction and their combination have been experimented. After that, we use the two metrics: Kappa coefficient of agreement and Voting agreement to measure the word annotation agreement of Ren-CECps. The experiments on above context features showed promising results compared with word emotion agreement on people's judgments.

2009

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Construction of a Blog Emotion Corpus for Chinese Emotional Expression Analysis
Changqin Quan | Fuji Ren
Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing

2005

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An Unsupervised Approach to Chinese Word Sense Disambiguation Based on Hownet
Hao Chen | Tingting He | Donghong Ji | Changqin Quan
International Journal of Computational Linguistics & Chinese Language Processing, Volume 10, Number 4, December 2005: Special Issue on Selected Papers from CLSW-5