no code implementations • EMNLP 2020 • Adaku Uchendu, Thai Le, Kai Shu, Dongwon Lee
In recent years, the task of generating realistic short and long texts have made tremendous advancements.
no code implementations • CONSTRAINT (ACL) 2022 • Jason Lucas, Limeng Cui, Thai Le, Dongwon Lee
The COVID-19 pandemic has created threats to global health control.
1 code implementation • Findings (ACL) 2022 • Thai Le, Jooyoung Lee, Kevin Yen, Yifan Hu, Dongwon Lee
We find that adversarial texts generated by ANTHRO achieve the best trade-off between (1) attack success rate, (2) semantic preservation of the original text, and (3) stealthiness--i. e. indistinguishable from human writings hence harder to be flagged as suspicious.
no code implementations • 15 Mar 2022 • Jooyoung Lee, Thai Le, Jinghui Chen, Dongwon Lee
Past literature has illustrated that language models do not fully understand the context and sensitivity of text and can sometimes memorize phrases or sentences present in their training sets.
no code implementations • 22 Feb 2022 • Michiharu Yamashita, Jia Tracy Shen, Hamoon Ekhtiari, Thanh Tran, Dongwon Lee
One of the most essential tasks needed for various downstream tasks in career analytics (e. g., career trajectory analysis, job mobility prediction, and job recommendation) is Job Title Mapping (JTM), where the goal is to map user-created (noisy and non-standard) job titles to predefined and standard job titles.
no code implementations • 20 Oct 2021 • Thai Le, Long Tran-Thanh, Dongwon Lee
To this question, we successfully demonstrate that indeed it is possible for adversaries to exploit computational learning mechanism such as reinforcement learning (RL) to maximize the influence of socialbots while avoiding being detected.
no code implementations • Findings (EMNLP) 2021 • Adaku Uchendu, Zeyu Ma, Thai Le, Rui Zhang, Dongwon Lee
Recent progress in generative language models has enabled machines to generate astonishingly realistic texts.
1 code implementation • 2 Jun 2021 • Jia Tracy Shen, Michiharu Yamashita, Ethan Prihar, Neil Heffernan, Xintao Wu, Ben Graff, Dongwon Lee
Due to the nature of mathematical texts, which often use domain specific vocabulary along with equations and math symbols, we posit that the development of a new BERT model for mathematics would be useful for many mathematical downstream tasks.
no code implementations • 31 May 2021 • Duanshun Li, Jing Liu, Jinsung Jeon, Seoyoung Hong, Thai Le, Dongwon Lee, Noseong Park
On top of the prediction models, we define a budget-constrained flight frequency optimization problem to maximize the market influence over 2, 262 routes.
no code implementations • 24 May 2021 • Jia Tracy Shen, Michiharu Yamashita, Ethan Prihar, Neil Heffernan, Xintao Wu, Sean McGrew, Dongwon Lee
Educational content labeled with proper knowledge components (KCs) are particularly useful to teachers or content organizers.
1 code implementation • NAACL 2021 • Minjin Choi, Sunkyung Lee, Eunseong Choi, Heesoo Park, Junhyuk Lee, Dongwon Lee, Jongwuk Lee
Automated metaphor detection is a challenging task to identify metaphorical expressions of words in a sentence.
no code implementations • 23 Mar 2021 • Dongwon Lee, Nikolaos Karadimitriou, Matthias Ruf, Holger Steeb
The segmentation results from all five methods are compared to each other in terms of segmentation quality and time efficiency.
no code implementations • ACL 2021 • Thai Le, Noseong Park, Dongwon Lee
The Universal Trigger (UniTrigger) is a recently-proposed powerful adversarial textual attack method.
1 code implementation • ACL 2022 • Thai Le, Noseong Park, Dongwon Lee
Even though several methods have proposed to defend textual neural network (NN) models against black-box adversarial attacks, they often defend against a specific text perturbation strategy and/or require re-training the models from scratch.
no code implementations • 22 Oct 2020 • Wen Huang, Kevin Labille, Xintao Wu, Dongwon Lee, Neil Heffernan
Personalized recommendation based on multi-arm bandit (MAB) algorithms has shown to lead to high utility and efficiency as it can dynamically adapt the recommendation strategy based on feedback.
1 code implementation • 1 Sep 2020 • Thai Le, Suhang Wang, Dongwon Lee
In recent years, the proliferation of so-called "fake news" has caused much disruptions in society and weakened the news ecosystem.
2 code implementations • 22 May 2020 • Limeng Cui, Dongwon Lee
As the COVID-19 virus quickly spreads around the world, unfortunately, misinformation related to COVID-19 also gets created and spreads like wild fire.
1 code implementation • 2 Jan 2020 • Kai Shu, Suhang Wang, Dongwon Lee, Huan Liu
In recent years, disinformation including fake news, has became a global phenomenon due to its explosive growth, particularly on social media.
1 code implementation • 5 Nov 2019 • Thai Le, Suhang Wang, Dongwon Lee
Despite the recent development in the topic of explainable AI/ML for image and text data, the majority of current solutions are not suitable to explain the prediction of neural network models when the datasets are tabular and their features are in high-dimensional vectorized formats.
no code implementations • 26 Jul 2019 • Jason, Zhang, Junming Yin, Dongwon Lee, Linhong Zhu
In recent years, \emph{search story}, a combined display with other organic channels, has become a major source of user traffic on platforms such as e-commerce search platforms, news feed platforms and web and image search platforms.
5 code implementations • 5 Sep 2018 • Kai Shu, Deepak Mahudeswaran, Suhang Wang, Dongwon Lee, Huan Liu
However, fake news detection is a non-trivial task, which requires multi-source information such as news content, social context, and dynamic information.
Social and Information Networks
2 code implementations • 31 Aug 2018 • Thanh Tran, Kyumin Lee, Yiming Liao, Dongwon Lee
Following recent successes in exploiting both latent factor and word embedding models in recommendation, we propose a novel Regularized Multi-Embedding (RME) based recommendation model that simultaneously encapsulates the following ideas via decomposition: (1) which items a user likes, (2) which two users co-like the same items, (3) which two items users often co-liked, and (4) which two items users often co-disliked.