Affective Natural Language Generation by Phrase Insertion. - Tomasz Dryjanski; Pawel Bujnowski; Hyungtak Choi; Katarzyna Podlaska; Kamil Michalski; Katarzyna Beksa; Pawel Kubik (IEEE BigData, 2018)

Self-Learning Architecture for Natural Language Generation. - Hyungtak Choi; Siddarth K. M.; Haehun Yang; Heesik Jeon; Inchul Hwang; Jihie Kim (INLG, 2018)

Toward Low-Cost Automated Evaluation Metrics for Internet of Things Dialogues. - Kallirroi Georgila; Carla Gordon; Hyungtak Choi; Jill Boberg; Heesik Jeon; David R. Traum (IWSDS, 2018)

Paraphrase Generation Based on VAE and Pointer-Generator Networks. - Lohith Ravuru; Hyungtak Choi; Siddarth K. M.; Hojung Lee; Inchul Hwang (ASRU, 2019)

VAE-PGN based Abstractive Model in Multi-stage Architecture for Text Summarization. - Hyungtak Choi; Lohith Ravuru; Tomasz Dryjanski; Sunghan Rye; Donghyun Lee; Hojung Lee; Inchul Hwang (INLG, 2019)

Ensemble-based deep reinforcement learning for chatbots. - Heriberto Cuayáhuitl; Donghyeon Lee; Seonghan Ryu; Yongjin Cho; Sungja Choi; Satish Reddy Indurthi; Seunghak Yu; Hyungtak Choi; Inchul Hwang; Jihie Kim (Neurocomputing, 2019)

An Empirical Study on Multi-Task Learning for Text Style Transfer and Paraphrase Generation. - Pawel Bujnowski; Kseniia Ryzhova; Hyungtak Choi; Katarzyna Witkowska; Jaroslaw Piersa; Tymoteusz Krumholc; Katarzyna Beksa (COLING (Industry), 2020)

KILDST: Effective Knowledge-Integrated Learning for Dialogue State Tracking using Gazetteer and Speaker Information. - Hyungtak Choi; Hyeonmok Ko; Gurpreet Kaur; Lohith Ravuru; Kiranmayi Gandikota; Manisha Jhawar; Simma Dharani; Pranamya Patil (ICON, 2022)

Efficient Dialog State Tracking Using Gated- Intent based Slot Operation Prediction for On-device Dialog Systems. - Pranamya Patil; Hyungtak Choi; Ranjan Samal; Gurpreet Kaur; Manisha Jhawar; Aniruddha Tammewar; Siddhartha Mukherjee (ICON, 2022)

Multi-Domain Dialogue State Tracking By Neural-Retrieval Augmentation. - Lohith Ravuru; Seonghan Ryu; Hyungtak Choi; Haehun Yang; Hyeonmok Ko (AACL/IJCNLP (Findings), 2022)