Search Results for author: Ka Chun Cheung

Found 19 papers, 9 papers with code

RegionGPT: Towards Region Understanding Vision Language Model

no code implementations4 Mar 2024 Qiushan Guo, Shalini De Mello, Hongxu Yin, Wonmin Byeon, Ka Chun Cheung, Yizhou Yu, Ping Luo, Sifei Liu

Vision language models (VLMs) have experienced rapid advancements through the integration of large language models (LLMs) with image-text pairs, yet they struggle with detailed regional visual understanding due to limited spatial awareness of the vision encoder, and the use of coarse-grained training data that lacks detailed, region-specific captions.

Language Modelling

Resilient Practical Test-Time Adaptation: Soft Batch Normalization Alignment and Entropy-driven Memory Bank

no code implementations26 Jan 2024 Xingzhi Zhou, Zhiliang Tian, Ka Chun Cheung, Simon See, Nevin L. Zhang

Test-time domain adaptation effectively adjusts the source domain model to accommodate unseen domain shifts in a target domain during inference.

Test-time Adaptation

CopyRNeRF: Protecting the CopyRight of Neural Radiance Fields

1 code implementation ICCV 2023 Ziyuan Luo, Qing Guo, Ka Chun Cheung, Simon See, Renjie Wan

Neural Radiance Fields (NeRF) have the potential to be a major representation of media.

VideoFlow: Exploiting Temporal Cues for Multi-frame Optical Flow Estimation

1 code implementation ICCV 2023 Xiaoyu Shi, Zhaoyang Huang, Weikang Bian, Dasong Li, Manyuan Zhang, Ka Chun Cheung, Simon See, Hongwei Qin, Jifeng Dai, Hongsheng Li

We first propose a TRi-frame Optical Flow (TROF) module that estimates bi-directional optical flows for the center frame in a three-frame manner.

Optical Flow Estimation

SVD-PINNs: Transfer Learning of Physics-Informed Neural Networks via Singular Value Decomposition

no code implementations16 Nov 2022 Yihang Gao, Ka Chun Cheung, Michael K. Ng

Physics-informed neural networks (PINNs) have attracted significant attention for solving partial differential equations (PDEs) in recent years because they alleviate the curse of dimensionality that appears in traditional methods.

Transfer Learning

Hard Gate Knowledge Distillation -- Leverage Calibration for Robust and Reliable Language Model

no code implementations22 Oct 2022 Dongkyu Lee, Zhiliang Tian, Yingxiu Zhao, Ka Chun Cheung, Nevin L. Zhang

The question is answered in our work with the concept of model calibration; we view a teacher model not only as a source of knowledge but also as a gauge to detect miscalibration of a student.

Knowledge Distillation Language Modelling +2

Adaptive Label Smoothing with Self-Knowledge in Natural Language Generation

no code implementations22 Oct 2022 Dongkyu Lee, Ka Chun Cheung, Nevin L. Zhang

Furthermore, inspired by recent work in bridging label smoothing and knowledge distillation, our work utilizes self-knowledge as a prior label distribution in softening target labels, and presents theoretical support for the regularization effect by knowledge distillation and the dynamic smoothing parameter.

Knowledge Distillation Text Generation

NeuralMarker: A Framework for Learning General Marker Correspondence

no code implementations19 Sep 2022 Zhaoyang Huang, Xiaokun Pan, Weihong Pan, Weikang Bian, Yan Xu, Ka Chun Cheung, Guofeng Zhang, Hongsheng Li

We tackle the problem of estimating correspondences from a general marker, such as a movie poster, to an image that captures such a marker.

Video Editing

MPPNet: Multi-Frame Feature Intertwining with Proxy Points for 3D Temporal Object Detection

1 code implementation12 May 2022 Xuesong Chen, Shaoshuai Shi, Benjin Zhu, Ka Chun Cheung, Hang Xu, Hongsheng Li

Accurate and reliable 3D detection is vital for many applications including autonomous driving vehicles and service robots.

Autonomous Driving object-detection +1

FlowFormer: A Transformer Architecture for Optical Flow

1 code implementation30 Mar 2022 Zhaoyang Huang, Xiaoyu Shi, Chao Zhang, Qiang Wang, Ka Chun Cheung, Hongwei Qin, Jifeng Dai, Hongsheng Li

We introduce optical Flow transFormer, dubbed as FlowFormer, a transformer-based neural network architecture for learning optical flow.

Optical Flow Estimation

Adaptive Label Smoothing with Self-Knowledge

no code implementations29 Sep 2021 Dongkyu Lee, Ka Chun Cheung, Nevin Zhang

Overconfidence has been shown to impair generalization and calibration of a neural network.

Knowledge Distillation Machine Translation

LIFE: Lighting Invariant Flow Estimation

no code implementations7 Apr 2021 Zhaoyang Huang, Xiaokun Pan, Runsen Xu, Yan Xu, Ka Chun Cheung, Guofeng Zhang, Hongsheng Li

However, local image contents are inevitably ambiguous and error-prone during the cross-image feature matching process, which hinders downstream tasks.

Understanding Top-k Sparsification in Distributed Deep Learning

1 code implementation20 Nov 2019 Shaohuai Shi, Xiaowen Chu, Ka Chun Cheung, Simon See

Distributed stochastic gradient descent (SGD) algorithms are widely deployed in training large-scale deep learning models, while the communication overhead among workers becomes the new system bottleneck.

Cannot find the paper you are looking for? You can Submit a new open access paper.