IIT-UHH at SemEval-2017 Task 3: Exploring Multiple Features for Community Question Answering and Implicit Dialogue Identification

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Abstract

In this paper we present the system for Answer Selection and Ranking in Community Question Answering, which we build as part of our participation in SemEval-2017 Task 3. We develop a Support Vector Machine (SVM) based system that makes use of textual, domain-specific, word-embedding and topic-modeling features. In addition, we propose a novel method for dialogue chain identification in comment threads. Our primary submission won subtask C, outperforming other systems in all the primary evaluation metrics. We performed well in other English subtasks, ranking third in subtask A and eighth in subtask B. We also developed open source toolkits for all the three English subtasks by the name cQARank1

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Nandi, T., Biemann, C., Yimam, S. M., Gupta, D., Kohail, S., Ekbal, A., & Bhattacharyya, P. (2017). IIT-UHH at SemEval-2017 Task 3: Exploring Multiple Features for Community Question Answering and Implicit Dialogue Identification. In Proceedings of the Annual Meeting of the Association for Computational Linguistics (pp. 90–97). Association for Computational Linguistics (ACL). https://doi.org/10.18653/v1/s17-2009

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