no code implementations • NAACL 2022 • Baber Khalid, Sungjin Lee
There is an increasing trend in using neural methods for dialogue model evaluation.
no code implementations • EMNLP (NLP4ConvAI) 2021 • Shuyang Dai, Guoyin Wang, Sunghyun Park, Sungjin Lee
In this work, we aim to construct a robust sentence representation learning model, that is specifically designed for dialogue response generation, with Transformer-based encoder-decoder structure.
no code implementations • 9 Mar 2023 • Ke Bai, Guoyin Wang, Jiwei Li, Sunghyun Park, Sungjin Lee, Puyang Xu, Ricardo Henao, Lawrence Carin
Open world classification is a task in natural language processing with key practical relevance and impact.
no code implementations • 17 Feb 2023 • Taehee Jung, Joo-Kyung Kim, Sungjin Lee, Dongyeop Kang
For extreme multi-label classification (XMC), existing classification-based models poorly perform for tail labels and often ignore the semantic relations among labels, like treating "Wikipedia" and "Wiki" as independent and separate labels.
no code implementations • 10 Feb 2023 • Yen-Ting Lin, Alexandros Papangelis, Seokhwan Kim, Sungjin Lee, Devamanyu Hazarika, Mahdi Namazifar, Di Jin, Yang Liu, Dilek Hakkani-Tur
This work focuses on in-context data augmentation for intent detection.
Ranked #1 on
Intent Detection
on HWU64 5-shot
no code implementations • 22 Oct 2022 • Niranjan Uma Naresh, Ziyan Jiang, Ankit, Sungjin Lee, Jie Hao, Xing Fan, Chenlei Guo
Conversational understanding is an integral part of modern intelligent devices.
no code implementations • 17 Sep 2022 • Mohammad Kachuee, Sungjin Lee
Based on the experimental results, we demonstrate that the proposed approach is capable of achieving the best balance between the policy value and constraint satisfaction rate.
no code implementations • 18 Aug 2022 • Minseok Kim, Jinoh Oh, Jaeyoung Do, Sungjin Lee
Graph neural networks (GNNs) have achieved remarkable success in recommender systems by representing users and items based on their historical interactions.
no code implementations • 28 Jul 2022 • Hongyu Shen, Jinoh Oh, Shuai Zhao, Guoyin Wang, Tara Taghavi, Sungjin Lee
Then we propose a graph convolutional network(GCN) based model, namely Personalized Dynamic Routing Feature Encoder(PDRFE), that generates personalized customer representations learned from the built graph.
no code implementations • NAACL (ACL) 2022 • Mohammad Kachuee, Jinseok Nam, Sarthak Ahuja, Jin-Myung Won, Sungjin Lee
Skill routing is an important component in large-scale conversational systems.
no code implementations • WASSA (ACL) 2022 • Zixuan Ke, Mohammad Kachuee, Sungjin Lee
In many real-world machine learning applications, samples belong to a set of domains e. g., for product reviews each review belongs to a product category.
no code implementations • 17 Feb 2022 • Jisung Park, Jeoggyun Kim, Yeseong Kim, Sungjin Lee, Onur Mutlu
Data reduction in storage systems is becoming increasingly important as an effective solution to minimize the management cost of a data center.
no code implementations • 25 Sep 2021 • Joo-Kyung Kim, Guoyin Wang, Sungjin Lee, Young-Bum Kim
A large-scale conversational agent can suffer from understanding user utterances with various ambiguities such as ASR ambiguity, intent ambiguity, and hypothesis ambiguity.
1 code implementation • ACL 2021 • Xinnuo Xu, Guoyin Wang, Young-Bum Kim, Sungjin Lee
Natural Language Generation (NLG) is a key component in a task-oriented dialogue system, which converts the structured meaning representation (MR) to the natural language.
no code implementations • Findings (ACL) 2021 • Cheng Wang, Sungjin Lee, Sunghyun Park, Han Li, Young-Bum Kim, Ruhi Sarikaya
Real-world machine learning systems are achieving remarkable performance in terms of coarse-grained metrics like overall accuracy and F-1 score.
no code implementations • 26 Apr 2021 • Cheng Wang, Sun Kim, Taiwoo Park, Sajal Choudhary, Sunghyun Park, Young-Bum Kim, Ruhi Sarikaya, Sungjin Lee
We have been witnessing the usefulness of conversational AI systems such as Siri and Alexa, directly impacting our daily lives.
no code implementations • 4 Mar 2021 • Han Li, Sunghyun Park, Aswarth Dara, Jinseok Nam, Sungjin Lee, Young-Bum Kim, Spyros Matsoukas, Ruhi Sarikaya
Ensuring model robustness or resilience in the skill routing component is an important problem since skills may dynamically change their subscription in the ontology after the skill routing model has been deployed to production.
Automatic Speech Recognition
Automatic Speech Recognition (ASR)
+3
no code implementations • 1 Mar 2021 • Ziming Li, Dookun Park, Julia Kiseleva, Young-Bum Kim, Sungjin Lee
Digital assistants are experiencing rapid growth due to their ability to assist users with day-to-day tasks where most dialogues are happening multi-turn.
1 code implementation • Findings of the Association for Computational Linguistics 2020 • Ziming Li, Sungjin Lee, Baolin Peng, Jinchao Li, Julia Kiseleva, Maarten de Rijke, Shahin Shayandeh, Jianfeng Gao
Reinforcement learning methods have emerged as a popular choice for training an efficient and effective dialogue policy.
no code implementations • EMNLP 2021 • Sunghyun Park, Han Li, Ameen Patel, Sidharth Mudgal, Sungjin Lee, Young-Bum Kim, Spyros Matsoukas, Ruhi Sarikaya
Natural Language Understanding (NLU) is an established component within a conversational AI or digital assistant system, and it is responsible for producing semantic understanding of a user request.
no code implementations • NAACL 2021 • Mohammad Kachuee, Hao Yuan, Young-Bum Kim, Sungjin Lee
Moreover, a powerful satisfaction model can be used as an objective function that a conversational agent continuously optimizes for.
no code implementations • 29 May 2020 • Dookun Park, Hao Yuan, Dongmin Kim, Yinglei Zhang, Matsoukas Spyros, Young-Bum Kim, Ruhi Sarikaya, Edward Guo, Yuan Ling, Kevin Quinn, Pham Hung, Benjamin Yao, Sungjin Lee
An widely used approach to tackle this is to collect human annotation data and use them for evaluation or modeling.
1 code implementation • 7 Apr 2020 • Ziming Li, Sungjin Lee, Baolin Peng, Jinchao Li, Julia Kiseleva, Maarten de Rijke, Shahin Shayandeh, Jianfeng Gao
Reinforcement Learning (RL) methods have emerged as a popular choice for training an efficient and effective dialogue policy.
no code implementations • 14 Nov 2019 • Seokhwan Kim, Michel Galley, Chulaka Gunasekara, Sungjin Lee, Adam Atkinson, Baolin Peng, Hannes Schulz, Jianfeng Gao, Jinchao Li, Mahmoud Adada, Minlie Huang, Luis Lastras, Jonathan K. Kummerfeld, Walter S. Lasecki, Chiori Hori, Anoop Cherian, Tim K. Marks, Abhinav Rastogi, Xiaoxue Zang, Srinivas Sunkara, Raghav Gupta
This paper introduces the Eighth Dialog System Technology Challenge.
no code implementations • WS 2019 • Woon Sang Cho, Yizhe Zhang, Sudha Rao, Chris Brockett, Sungjin Lee
A preliminary step towards this goal is to generate a question that captures common concepts of multiple documents.
no code implementations • IJCNLP 2019 • Igor Shalyminov, Sungjin Lee, Arash Eshghi, Oliver Lemon
Our main dataset is the Stanford Multi-Domain dialogue corpus.
1 code implementation • IJCNLP 2019 • Xiang Gao, Yizhe Zhang, Sungjin Lee, Michel Galley, Chris Brockett, Jianfeng Gao, Bill Dolan
This structure allows the system to generate stylized relevant responses by sampling in the neighborhood of the conversation model prediction, and continuously control the style level.
no code implementations • WS 2019 • Xinnuo Xu, Yizhe Zhang, Lars Liden, Sungjin Lee
Although the data-driven approaches of some recent bot building platforms make it possible for a wide range of users to easily create dialogue systems, those platforms don{'}t offer tools for quickly identifying which log dialogues contain problems.
no code implementations • WS 2019 • Igor Shalyminov, Sungjin Lee, Arash Eshghi, Oliver Lemon
Learning with minimal data is one of the key challenges in the development of practical, production-ready goal-oriented dialogue systems.
1 code implementation • 24 May 2019 • Sungjin Lee, Igor Shalyminov
Neural dialog models often lack robustness to anomalous user input and produce inappropriate responses which leads to frustrating user experience.
2 code implementations • ACL 2019 • Sungjin Lee, Qi Zhu, Ryuichi Takanobu, Xiang Li, Yaoqin Zhang, Zheng Zhang, Jinchao Li, Baolin Peng, Xiujun Li, Minlie Huang, Jianfeng Gao
We present ConvLab, an open-source multi-domain end-to-end dialog system platform, that enables researchers to quickly set up experiments with reusable components and compare a large set of different approaches, ranging from conventional pipeline systems to end-to-end neural models, in common environments.
1 code implementation • 13 Mar 2019 • Yizhe Zhang, Xiang Gao, Sungjin Lee, Chris Brockett, Michel Galley, Jianfeng Gao, Bill Dolan
Generating responses that are consistent with the dialogue context is one of the central challenges in building engaging conversational agents.
no code implementations • NAACL 2019 • Xiang Gao, Sungjin Lee, Yizhe Zhang, Chris Brockett, Michel Galley, Jianfeng Gao, Bill Dolan
In this paper, we propose a SpaceFusion model to jointly optimize diversity and relevance that essentially fuses the latent space of a sequence-to-sequence model and that of an autoencoder model by leveraging novel regularization terms.
Ranked #1 on
Dialogue Generation
on Reddit (multi-ref)
1 code implementation • 29 Nov 2018 • Igor Shalyminov, Sungjin Lee
We present a new dataset for studying the robustness of dialog systems to OOD input, which is bAbI Dialog Task 6 augmented with OOD content in a controlled way.
no code implementations • 15 Nov 2018 • Sungjin Lee
Neural conversation models are attractive because one can train a model directly on dialog examples with minimal labeling.
no code implementations • 29 Aug 2018 • Sungjin Lee, Rahul Jha
Conversational agents such as Alexa and Google Assistant constantly need to increase their language understanding capabilities by adding new domains.
no code implementations • 16 Jan 2018 • Young-Bum Kim, Sungjin Lee, Karl Stratos
In practice, most spoken language understanding systems process user input in a pipelined manner; first domain is predicted, then intent and semantic slots are inferred according to the semantic frames of the predicted domain.
no code implementations • 28 Dec 2017 • Sungjin Lee
While end-to-end neural conversation models have led to promising advances in reducing hand-crafted features and errors induced by the traditional complex system architecture, they typically require an enormous amount of data due to the lack of modularity.
no code implementations • 29 Nov 2017 • Young-Bum Kim, Sungjin Lee, Ruhi Sarikaya
In multi-turn dialogs, natural language understanding models can introduce obvious errors by being blind to contextual information.
no code implementations • EMNLP 2017 • Baolin Peng, Xiujun Li, Lihong Li, Jianfeng Gao, Asli Celikyilmaz, Sungjin Lee, Kam-Fai Wong
Building a dialogue agent to fulfill complex tasks, such as travel planning, is challenging because the agent has to learn to collectively complete multiple subtasks.