Kong Joo Lee


2024

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Improving Backchannel Prediction Leveraging Sequential and Attentive Context Awareness
Yo-Han Park | Wencke Liermann | Yong-Seok Choi | Kong Joo Lee
Findings of the Association for Computational Linguistics: EACL 2024

Backchannels, which refer to short and often affirmative or empathetic responses from a listener during a conversation, play a crucial role in effective communication. In this paper, we introduce CABP(Context-Aware Backchannel Prediction), a sequential and attentive context approach aimed at enhancing backchannel prediction performance. Additionally, CABP leverages the pretrained wav2vec model for encoding audio signal. Experimental results show that CABP performs better than context-free models, with performance improvements of 1.3% and 1.8% in Korean and English datasets, respectively. Furthermore, when utilizing the pretrained wav2vec model, CABP consistently demonstrates the best performance, achieving performance improvements of 4.4% and 3.1% in Korean and English datasets.

2017

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Automatic Text Summarization Using Reinforcement Learning with Embedding Features
Gyoung Ho Lee | Kong Joo Lee
Proceedings of the Eighth International Joint Conference on Natural Language Processing (Volume 2: Short Papers)

An automatic text summarization system can automatically generate a short and brief summary that contains a main concept of an original document. In this work, we explore the advantages of simple embedding features in Reinforcement leaning approach to automatic text summarization tasks. In addition, we propose a novel deep learning network for estimating Q-values used in Reinforcement learning. We evaluate our model by using ROUGE scores with DUC 2001, 2002, Wikipedia, ACL-ARC data. Evaluation results show that our model is competitive with the previous models.

2010

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A Human-Computer Collaboration Approach to Improve Accuracy of an Automated English Scoring System
Jee Eun Kim | Kong Joo Lee
Proceedings of the NAACL HLT 2010 Fifth Workshop on Innovative Use of NLP for Building Educational Applications

1995

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A Robust Parser Based on Syntactic Information
Kong Joo Lee | Cheol Jung Kweon | Jungyun Seo | Gil Chang Kim
Seventh Conference of the European Chapter of the Association for Computational Linguistics