no code implementations • 28 Sep 2023 • Zhou Fan, Xinran Han, Zi Wang
Bayesian optimization (BO) is a popular black-box function optimization method, which makes sequential decisions based on a Bayesian model, typically a Gaussian process (GP), of the function.
no code implementations • 13 Sep 2023 • Min Xiao, Zi Wang, Jiefeng Guo, Xiaobo Qu
Magnetic resonance imaging (MRI) plays an important role in modern medical diagnostic but suffers from prolonged scan time.
1 code implementation • 25 Jul 2023 • Zi Wang, Xiaotong Yu, Chengyan Wang, Weibo Chen, Jiazheng Wang, Ying-Hua Chu, Hongwei Sun, Rushuai Li, Peiyong Li, Fan Yang, Haiwei Han, Taishan Kang, Jianzhong Lin, Chen Yang, Shufu Chang, Zhang Shi, Sha Hua, Yan Li, Juan Hu, Liuhong Zhu, Jianjun Zhou, Meijing Lin, Jiefeng Guo, Congbo Cai, Zhong Chen, Di Guo, Xiaobo Qu
Magnetic resonance imaging (MRI) is a principal radiological modality that provides radiation-free, abundant, and diverse information about the whole human body for medical diagnosis, but suffers from prolonged scan time.
1 code implementation • 17 Jul 2023 • Haohui Wang, Weijie Guan, Jianpeng Chen, Zi Wang, Dawei Zhou
To achieve this, we develop the most comprehensive (to the best of our knowledge) long-tailed learning benchmark named HeroLT, which integrates 13 state-of-the-art algorithms and 6 evaluation metrics on 14 real-world benchmark datasets across 4 tasks from 3 domains.
1 code implementation • 20 Jun 2023 • Zi Wang, Daniel Hershcovich
To address this limitation, we craft a faithful rule-based translation of the MCWQ dataset from English to Chinese and Japanese.
no code implementations • 30 May 2023 • Bailin Wang, Zi Wang, Xuezhi Wang, Yuan Cao, Rif A. Saurous, Yoon Kim
Large language models (LLMs) can learn to perform a wide range of natural language tasks from just a handful of in-context examples.
1 code implementation • 29 May 2023 • Zi Wang, Alexander Ku, Jason Baldridge, Thomas L. Griffiths, Been Kim
Our experiments show it can (1) probe a model's representations of concepts even with a very small number of examples, (2) accurately measure both epistemic uncertainty (how confident the probe is) and aleatory uncertainty (how fuzzy the concepts are to the model), and (3) detect out of distribution data using those uncertainty measures as well as classic methods do.
no code implementations • 25 May 2023 • Aihua Zheng, Ziling He, Zi Wang, Chenglong Li, Jin Tang
Many existing multi-modality studies are based on the assumption of modality integrity.
no code implementations • 25 May 2023 • Zi Wang, Jihye Choi, Somesh Jha
Deep neural networks (DNNs) have demonstrated extraordinary capabilities and are an integral part of modern software systems.
1 code implementation • 23 May 2023 • Aihua Zheng, Zhiqi Ma, Zi Wang, Chenglong Li
Finally, to evaluate the proposed FACENet in handling intense flare, we introduce a new multi-spectral vehicle re-ID dataset, called WMVEID863, with additional challenges such as motion blur, significant background changes, and particularly intense flare degradation.
no code implementations • 24 Apr 2023 • Shunli Ren, Zixing Lei, Zi Wang, Mehrdad Dianati, Yafei Wang, Siheng Chen, Wenjun Zhang
To achieve comprehensive recovery, we design a communication adaptive multi-scale spatial-temporal prediction model to extract multi-scale spatial-temporal features based on V2X communication conditions and capture the most significant information for the prediction of the missing information.
no code implementations • 23 Mar 2023 • Zi Wang, Somesh Jha, Krishnamurthy, Dvijotham
They allow us to encode many verification problems for neural networks as quadratic programs.
no code implementations • CVPR 2023 • Shaoheng Fang, Zi Wang, Yiqi Zhong, Junhao Ge, Siheng Chen, Yanfeng Wang
Second, a spatial-temporal pyramid transformer is introduced to comprehensively extract multi-scale BEV features and predict future BEV states with the support of spatial-temporal priors.
no code implementations • 21 Feb 2023 • Kun Wang, Zi Wang, Zhang Li, Ang Su, Xichao Teng, Minhao Liu, Qifeng Yu
Oriented object detection is one of the most fundamental and challenging tasks in remote sensing, aiming at locating the oriented objects of numerous predefined object categories.
no code implementations • ICCV 2023 • Yanhua Yu, Siyuan Shen, Zi Wang, Binbin Huang, Yuehan Wang, Xingyue Peng, Suan Xia, Ping Liu, Ruiqian Li, Shiying Li
Recovering information from non-line-of-sight (NLOS) imaging is a computationally-intensive inverse problem.
no code implementations • 23 Dec 2022 • Zi Wang, Minglin Chen, Yulan Guo, Zhang Li, Qifeng Yu
Recently, unsupervised domain adaptation in satellite pose estimation has gained increasing attention, aiming at alleviating the annotation cost for training deep models.
1 code implementation • 20 Dec 2022 • Zhou Fan, Xinran Han, Zi Wang
However, those prior learning methods typically assume that the input domains are the same for all tasks, weakening their ability to use observations on functions with different domains or generalize the learned priors to BO on different search spaces.
no code implementations • 4 Dec 2022 • Yirong Zhou, Chen Qian, Jiayu Li, Zi Wang, Yu Hu, Biao Qu, Liuhong Zhu, Jianjun Zhou, Taishan Kang, Jianzhong Lin, Qing Hong, Jiyang Dong, Di Guo, Xiaobo Qu
Efficient collaboration between engineers and radiologists is important for image reconstruction algorithm development and image quality evaluation in magnetic resonance imaging (MRI).
no code implementations • 24 Nov 2022 • Yihui Huang, Zi Wang, Xinlin Zhang, Jian Cao, Zhangren Tu, Meijin Lin, Di Guo, Xiaobo Qu
Undersampling can accelerate the signal acquisition but at the cost of bringing in artifacts.
no code implementations • 23 Oct 2022 • Zi Wang, Haoming Fang, Chen Qian, Boxuan Shi, Lijun Bao, Liuhong Zhu, Jianjun Zhou, Wenping Wei, Jianzhong Lin, Di Guo, Xiaobo Qu
To understand the behavior of the network, the mutual promotion of sensitivity estimation and image reconstruction is revealed through the visualization of network intermediate results.
no code implementations • 20 Oct 2022 • Chen Qian, Zi Wang, Xinlin Zhang, Qingrui Cai, Taishan Kang, Boyu Jiang, Ran Tao, Zhigang Wu, Di Guo, Xiaobo Qu
In this work, we propose a Physics-Informed Deep Diffusion magnetic resonance imaging (DWI) reconstruction method (PIDD).
no code implementations • 11 Oct 2022 • Zi Wang, Huaibo Huang, Aihua Zheng, Chenglong Li, Ran He
To alleviate the above problems, we propose a simple but effective method with Parallel Augmentation and Dual Enhancement (PADE) that is robust on both occluded and non-occluded data, and does not require any auxiliary clues.
1 code implementation • 15 Jul 2022 • Dustin Tran, Jeremiah Liu, Michael W. Dusenberry, Du Phan, Mark Collier, Jie Ren, Kehang Han, Zi Wang, Zelda Mariet, Huiyi Hu, Neil Band, Tim G. J. Rudner, Karan Singhal, Zachary Nado, Joost van Amersfoort, Andreas Kirsch, Rodolphe Jenatton, Nithum Thain, Honglin Yuan, Kelly Buchanan, Kevin Murphy, D. Sculley, Yarin Gal, Zoubin Ghahramani, Jasper Snoek, Balaji Lakshminarayanan
A recent trend in artificial intelligence is the use of pretrained models for language and vision tasks, which have achieved extraordinary performance but also puzzling failures.
1 code implementation • 7 Jul 2022 • Zi Wang, George E. Dahl, Kevin Swersky, Chansoo Lee, Zelda Mariet, Zachary Nado, Justin Gilmer, Jasper Snoek, Zoubin Ghahramani
Contrary to a common belief that BO is suited to optimizing black-box functions, it actually requires domain knowledge on characteristics of those functions to deploy BO successfully.
1 code implementation • 26 May 2022 • Yutian Chen, Xingyou Song, Chansoo Lee, Zi Wang, Qiuyi Zhang, David Dohan, Kazuya Kawakami, Greg Kochanski, Arnaud Doucet, Marc'Aurelio Ranzato, Sagi Perel, Nando de Freitas
Meta-learning hyperparameter optimization (HPO) algorithms from prior experiments is a promising approach to improve optimization efficiency over objective functions from a similar distribution.
no code implementations • 28 Mar 2022 • Chen Qian, Zi Wang, Xinlin Zhang, Boxuan Shi, Boyu Jiang, Ran Tao, Jing Li, Yuwei Ge, Taishan Kang, Jianzhong Lin, Di Guo, Xiaobo Qu
Conclusion: The explicit phase model PAIR with complementary priors has a good performance on challenging reconstructions under inter-shot motions between shots and a low signal-to-noise ratio.
no code implementations • 21 Mar 2022 • Qinqin Yang, Zi Wang, Kunyuan Guo, Congbo Cai, Xiaobo Qu
Deep learning has innovated the field of computational imaging.
no code implementations • 15 Mar 2022 • Yichao Yan, Zanwei Zhou, Zi Wang, Jingnan Gao, Xiaokang Yang
In this paper, we propose a novel unified framework based on neural radiance field (NeRF) to address this task.
1 code implementation • 2 Mar 2022 • Zi Wang, Gautam Prakriya, Somesh Jha
In this work, we provide a unified theoretical framework, a quantitative geometric approach, to address the Lipschitz constant estimation.
no code implementations • 29 Dec 2021 • Zhengqing Pan, Ruiqian Li, Tian Gao, Zi Wang, Ping Liu, Siyuan Shen, Tao Wu, Jingyi Yu, Shiying Li
There has been an increasing interest in deploying non-line-of-sight (NLOS) imaging systems for recovering objects behind an obstacle.
no code implementations • 9 Dec 2021 • Zi Wang, Chen Qian, Di Guo, Hongwei Sun, Rushuai Li, Bo Zhao, Xiaobo Qu
Deep learning has shown astonishing performance in accelerated magnetic resonance imaging (MRI).
4 code implementations • 16 Sep 2021 • Zi Wang, George E. Dahl, Kevin Swersky, Chansoo Lee, Zachary Nado, Justin Gilmer, Jasper Snoek, Zoubin Ghahramani
Contrary to a common expectation that BO is suited to optimizing black-box functions, it actually requires domain knowledge about those functions to deploy BO successfully.
1 code implementation • 7 Jun 2021 • Zi Wang
Here we propose the concept of decision-based black-box (DB3) knowledge distillation, with which the student is trained by distilling the knowledge from a black-box teacher (parameters are not accessible) that only returns classes rather than softmax outputs.
no code implementations • 18 Apr 2021 • Yirong Zhou, Chen Qian, Yi Guo, Zi Wang, Jian Wang, Biao Qu, Di Guo, Yongfu You, Xiaobo Qu
Machine learning and artificial intelligence have shown remarkable performance in accelerated magnetic resonance imaging (MRI).
no code implementations • 10 Apr 2021 • Zi Wang
Knowledge distillation (KD) has proved to be an effective approach for deep neural network compression, which learns a compact network (student) by transferring the knowledge from a pre-trained, over-parameterized network (teacher).
no code implementations • CVPR 2021 • Zi Wang, Chengcheng Li, Xiangyang Wang
Based on this finding, we then propose a network pruning approach that identifies structural redundancy of a CNN and prunes filters in the selected layer(s) with the most redundancy.
no code implementations • 9 Mar 2021 • Yahui Xiao, Zi Wang, Feifan Wang, Hwaseob Lee, Thomas Kananen, Tingyi Gu
We designed an on-chip transformative optic system of a metalens-photonic crystal resonator metasystem on a foundry compatible silicon photonic platform.
Optics
1 code implementation • 14 Feb 2021 • Thomas Kobber Panum, Zi Wang, Pengyu Kan, Earlence Fernandes, Somesh Jha
Deep Metric Learning (DML), a widely-used technique, involves learning a distance metric between pairs of samples.
no code implementations • 26 Jan 2021 • Dicheng Chen, Wanqi Hu, Huiting Liu, Yirong Zhou, Tianyu Qiu, Yihui Huang, Zi Wang, Jiazheng Wang, Liangjie Lin, Zhigang Wu, Hao Chen, Xi Chen, Gen Yan, Di Guo, Jianzhong Lin, Xiaobo Qu
A deep learning model, Refusion Long Short-Term Memory (ReLSTM), was designed to learn the mapping from the low SNR time-domain data (24 SA) to the high SNR one (128 SA).
1 code implementation • 2 Jan 2021 • Siyuan Shen, Zi Wang, Ping Liu, Zhengqing Pan, Ruiqian Li, Tian Gao, Shiying Li, Jingyi Yu
We present a neural modeling framework for Non-Line-of-Sight (NLOS) imaging.
no code implementations • 1 Jan 2021 • Zi Wang, Aws Albarghouthi, Somesh Jha
To certify safety and robustness of neural networks, researchers have successfully applied abstract interpretation, primarily using interval bound propagation.
no code implementations • 1 Jan 2021 • Thomas Kobber Panum, Zi Wang, Pengyu Kan, Earlence Fernandes, Somesh Jha
To the best of our knowledge, we are the first to systematically analyze this dependence effect and propose a principled approach for robust training of deep metric learning networks that accounts for the nuances of metric losses.
1 code implementation • 29 Dec 2020 • Zi Wang, Di Guo, Zhangren Tu, Yihui Huang, Yirong Zhou, Jian Wang, Liubin Feng, Donghai Lin, Yongfu You, Tatiana Agback, Vladislav Orekhov, Xiaobo Qu
The non-uniform sampling is a powerful approach to enable fast acquisition but requires sophisticated reconstruction algorithms.
no code implementations • 13 Jul 2020 • Yihui Huang, Jinkui Zhao, Zi Wang, Vladislav Orekhov, Di Guo, Xiaobo Qu
Exponential is a basic signal form, and how to fast acquire this signal is one of the fundamental problems and frontiers in signal processing.
no code implementations • 12 Jul 2020 • Zi Wang, Aws Albarghouthi, Gautam Prakriya, Somesh Jha
This is a crucial question, as our constructive proof of IUA is exponential in the size of the approximation domain.
1 code implementation • 8 Jun 2020 • Zi Wang, Caelan Reed Garrett, Leslie Pack Kaelbling, Tomás Lozano-Pérez
We use, and develop novel improvements on, state-of-the-art methods for active learning and sampling.
no code implementations • 29 Apr 2020 • Zi Wang, Ben Liblit, Thomas Reps
TOFU is also input-structure aware (i. e., the search makes use of a specification of a superset of the program's allowed inputs).
Software Engineering
1 code implementation • 7 Feb 2020 • Goutham Ramakrishnan, Jordan Henkel, Zi Wang, Aws Albarghouthi, Somesh Jha, Thomas Reps
Deep neural networks are vulnerable to adversarial examples - small input perturbations that result in incorrect predictions.
no code implementations • 13 Jan 2020 • Dicheng Chen, Zi Wang, Di Guo, Vladislav Orekhov, Xiaobo Qu
In this Minireview, we summarize applications of DL in Nuclear Magnetic Resonance (NMR) spectroscopy and outline a perspective for DL as entirely new approaches that are likely to transform NMR spectroscopy into a much more efficient and powerful technique in chemistry and life science.
no code implementations • 16 May 2019 • Chengcheng Li, Zi Wang, Dali Wang, Xiangyang Wang, Hairong Qi
Most existing channel pruning methods formulate the pruning task from a perspective of inefficiency reduction which iteratively rank and remove the least important filters, or find the set of filters that minimizes some reconstruction errors after pruning.
no code implementations • 18 Feb 2019 • Chengcheng Li, Zi Wang, Xiangyang Wang, Hairong Qi
In this work, we propose a novel single-shot channel pruning approach based on alternating direction methods of multipliers (ADMM), which can eliminate the need for complex iterative pruning and fine-tuning procedure and achieve a target compression ratio with only one run of pruning and fine-tuning.
no code implementations • 18 Feb 2019 • Zi Wang, Chengcheng Li, Dali Wang, Xiangyang Wang, Hairong Qi
In specific, with the proposed method, 75% and 54% of the total computation time for the whole pruning procedure can be reduced for AlexNet on CIFAR-10, and for VGG-16 on ImageNet, respectively.
1 code implementation • NeurIPS 2018 • Zi Wang, Beomjoon Kim, Leslie Pack Kaelbling
Bayesian optimization usually assumes that a Bayesian prior is given.
no code implementations • ICLR 2019 • Victoria Xia, Zi Wang, Leslie Pack Kaelbling
For any action, a rule selects a set of relevant objects and computes a distribution over properties of just those objects in the resulting state given their properties in the previous state.
no code implementations • 26 Jul 2018 • Beomjoon Kim, Zi Wang, Leslie Pack Kaelbling, Tomas Lozano-Perez
In this paper, we propose a learning algorithm that speeds up the search in task and motion planning problems.
no code implementations • 5 May 2018 • Chengcheng Li, Zi Wang, Hairong Qi
Building on top of the success of generative adversarial networks (GANs), conditional GANs attempt to better direct the data generation process by conditioning with certain additional information.
2 code implementations • 2 Mar 2018 • Zi Wang, Caelan Reed Garrett, Leslie Pack Kaelbling, Tomás Lozano-Pérez
Solving long-horizon problems in complex domains requires flexible generative planning that can combine primitive abilities in novel combinations to solve problems as they arise in the world.
no code implementations • 14 Jan 2018 • Zi Wang, Dali Wang, Chengcheng Li, Yichi Xu, Husheng Li, Zhirong Bao
However, the application of these systems to model cell movement is still challenging and requires a comprehensive understanding of regulation networks at the right scales.
2 code implementations • 5 Jun 2017 • Zi Wang, Clement Gehring, Pushmeet Kohli, Stefanie Jegelka
Bayesian optimization (BO) has become an effective approach for black-box function optimization problems when function evaluations are expensive and the optimum can be achieved within a relatively small number of queries.
1 code implementation • ICML 2017 • Zi Wang, Chengtao Li, Stefanie Jegelka, Pushmeet Kohli
Optimization of high-dimensional black-box functions is an extremely challenging problem.
4 code implementations • ICML 2017 • Zi Wang, Stefanie Jegelka
We propose a new criterion, Max-value Entropy Search (MES), that instead uses the information about the maximum function value.
no code implementations • 26 Jul 2016 • Zi Wang, Stefanie Jegelka, Leslie Pack Kaelbling, Tomás Lozano-Pérez
We introduce a framework for model learning and planning in stochastic domains with continuous state and action spaces and non-Gaussian transition models.
no code implementations • 9 May 2016 • Zi Wang, Vyacheslav Karolis, Chiara Nosarti, Giovanni Montana
These latent factors can be used to produce low-dimensional visualisations of the data that emphasise age-specific effects once the shared effects have been accounted for.
1 code implementation • 21 Oct 2015 • Zi Wang, Bolei Zhou, Stefanie Jegelka
Recently, there has been rising interest in Bayesian optimization -- the optimization of an unknown function with assumptions usually expressed by a Gaussian Process (GP) prior.
no code implementations • 4 Mar 2015 • Zi Wang, Wei Yuan, Giovanni Montana
The proposed methodology can be interpreted as an extension of principal component analysis in that it provides the means to decompose the total sample variance in each tissue into the sum of two components: one capturing the variance that is shared across tissues, and one isolating the tissue-specific variances.
no code implementations • 30 Sep 2014 • Necdet Serhat Aybat, Garud Iyengar, Zi Wang
We propose a distributed first-order augmented Lagrangian (DFAL) algorithm to minimize the sum of composite convex functions, where each term in the sum is a private cost function belonging to a node, and only nodes connected by an edge can directly communicate with each other.
Optimization and Control
no code implementations • NeurIPS 2013 • Jianfei Chen, Jun Zhu, Zi Wang, Xun Zheng, Bo Zhang
Logistic-normal topic models can effectively discover correlation structures among latent topics.