no code implementations • FNP (LREC) 2022 • Ziwei Xu, Rungsiman Nararatwong, Natthawut Kertkeidkachorn, Ryutaro Ichise
The application of span detection grows fast along with the increasing need of understanding the causes and effects of events, especially in the finance domain.
no code implementations • 26 May 2025 • Jiahao Lu, Ziwei Xu, Mohan Kankanhalli
Large Language Models (LLMs) have demonstrated impressive reasoning abilities through test-time computation (TTC) techniques such as chain-of-thought prompting and tree-based reasoning.
no code implementations • 19 May 2025 • Ziwei Xu, Udit Sanghi, Mohan Kankanhalli
Large Language Models (LLMs) are increasingly deployed in interactions where they are prompted to adopt personas.
no code implementations • 20 Dec 2024 • Yangyang Guo, Ziwei Xu, Xilie Xu, Yongkang Wong, Liqiang Nie, Mohan Kankanhalli
This technical report introduces our top-ranked solution that employs two approaches, \ie suffix injection and projected gradient descent (PGD) , to address the TiFA workshop MLLM attack challenge.
no code implementations • 26 Nov 2024 • Ying Chen, Ziwei Xu, Kotaro Inoue, Ryutaro Ichise
Instrumental Variable (IV) provides a source of treatment randomization that is conditionally independent of the outcomes, responding to the challenges of counterfactual and confounding biases.
no code implementations • 3 Oct 2024 • Ziwei Xu, Mohan Kankanhalli
A key component of value alignment is the modeling of human preferences as a representation of human values.
no code implementations • 27 Sep 2024 • Yung-Yu Shih, Ziwei Xu, Hiroya Takamura, Yun-Nung Chen, Chung-Chi Chen
Question answering (QA) has been a long-standing focus in the NLP field, predominantly addressing reading comprehension and common sense QA.
no code implementations • 21 May 2024 • Yi Cheng, Ziwei Xu, Dongyun Lin, Harry Cheng, Yongkang Wong, Ying Sun, Joo Hwee Lim, Mohan Kankanhalli
To address these challenges, we propose a knowledge-enhanced iterative refinement framework for visual content generation.
no code implementations • 22 Jan 2024 • Ziwei Xu, Sanjay Jain, Mohan Kankanhalli
Since the formal world is a part of the real world which is much more complicated, hallucinations are also inevitable for real world LLMs.
no code implementations • CVPR 2024 • Guangzhi Wang, Yangyang Guo, Ziwei Xu, Mohan Kankanhalli
Human-Object Interaction (HOI) Detection constitutes an important aspect of human-centric scene understanding which requires precise object detection and interaction recognition.
no code implementations • 13 Jul 2023 • Yi Cheng, Ziwei Xu, Fen Fang, Dongyun Lin, Hehe Fan, Yongkang Wong, Ying Sun, Mohan Kankanhalli
Our research focuses on the innovative application of a differentiable logic loss in the training to leverage the co-occurrence relations between verb and noun, as well as the pre-trained Large Language Models (LLMs) to generate the logic rules for the adaptation to unseen action labels.
no code implementations • 31 Jul 2022 • Guangyao Zhai, Yu Zheng, Ziwei Xu, Xin Kong, Yong liu, Benjamin Busam, Yi Ren, Nassir Navab, Zhengyou Zhang
In this paper, we introduce DA$^2$, the first large-scale dual-arm dexterity-aware dataset for the generation of optimal bimanual grasping pairs for arbitrary large objects.
1 code implementation • NeurIPS 2021 • Ziwei Xu, Xudong Shen, Yongkang Wong, Mohan S Kankanhalli
We propose the Motion Capsule Autoencoder (MCAE), which addresses a key challenge in the unsupervised learning of motion representations: transformation invariance.
Representation Learning
Self-Supervised Human Action Recognition
+2
1 code implementation • 10 Aug 2021 • Ziwei Xu, Guangzhi Wang, Yongkang Wong, Mohan Kankanhalli
The concept module generates semantically meaningful features for primitive concepts, whereas the visual module extracts visual features for attributes and objects from input images.
no code implementations • 9 Feb 2020 • Junnan Li, Ziwei Xu, Yongkang Wong, Qi Zhao, Mohan Kankanhalli
Therefore, it is important to develop algorithms that can leverage off-the-shelf labeled dataset to learn useful knowledge for the target task.
1 code implementation • NeurIPS 2019 • Yaqi Xie, Ziwei Xu, Mohan S. Kankanhalli, Kuldeep S. Meel, Harold Soh
Interestingly, we observe a connection between the tractability of the propositional theory representation and the ease of embedding.
no code implementations • 25 Jan 2019 • Ziwei Xu, Mounira Harzallah, Fabrice Guillet
The construction of this co-occurrence matrix from context helps to build feature space of noun phrases, which is then transformed to several encoding representations including feature selection and dimensionality reduction.
no code implementations • 6 Oct 2016 • Ziwei Xu, Haitian Zheng, Minjian Pang, Yangchun Zhu, Xiongfei Su, Guyue Zhou, Lu Fang
Towards robust and convenient indoor shopping mall navigation, we propose a novel learning-based scheme to utilize the high-level visual information from the storefront images captured by personal devices of users.