Wencan Luo


2016

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An Improved Phrase-based Approach to Annotating and Summarizing Student Course Responses
Wencan Luo | Fei Liu | Diane Litman
Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers

Teaching large classes remains a great challenge, primarily because it is difficult to attend to all the student needs in a timely manner. Automatic text summarization systems can be leveraged to summarize the student feedback, submitted immediately after each lecture, but it is left to be discovered what makes a good summary for student responses. In this work we explore a new methodology that effectively extracts summary phrases from the student responses. Each phrase is tagged with the number of students who raise the issue. The phrases are evaluated along two dimensions: with respect to text content, they should be informative and well-formed, measured by the ROUGE metric; additionally, they shall attend to the most pressing student needs, measured by a newly proposed metric. This work is enabled by a phrase-based annotation and highlighting scheme, which is new to the summarization task. The phrase-based framework allows us to summarize the student responses into a set of bullet points and present to the instructor promptly.

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Automatic Summarization of Student Course Feedback
Wencan Luo | Fei Liu | Zitao Liu | Diane Litman
Proceedings of the 2016 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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An Empirical Study of Automatic Chinese Word Segmentation for Spoken Language Understanding and Named Entity Recognition
Wencan Luo | Fan Yang
Proceedings of the 2016 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

2015

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Enhancing Instructor-Student and Student-Student Interactions with Mobile Interfaces and Summarization
Wencan Luo | Xiangmin Fan | Muhsin Menekse | Jingtao Wang | Diane Litman
Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Demonstrations

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Summarizing Student Responses to Reflection Prompts
Wencan Luo | Diane Litman
Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing

2013

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Reducing Annotation Effort on Unbalanced Corpus based on Cost Matrix
Wencan Luo | Diane Litman | Joel Chan
Proceedings of the 2013 NAACL HLT Student Research Workshop