Search Results for author: Chao Zhou

Found 48 papers, 14 papers with code

Channel Estimation for XL-IRS Assisted Wireless Systems with Double-sided Visibility Regions

no code implementations30 Aug 2024 Chao Zhou, Changsheng You, Shiqi Gong, Bin Lyu, Beixiong Zheng, Yi Gong

To address this issue, we propose in this paper an efficient three-step XL-IRS channel estimation method.

OAPT: Offset-Aware Partition Transformer for Double JPEG Artifacts Removal

1 code implementation21 Aug 2024 Qiao Mo, Yukang Ding, Jinhua Hao, Qiang Zhu, Ming Sun, Chao Zhou, Feiyu Chen, Shuyuan Zhu

Specifically, the predictor estimates pixel offsets between the first and second compression, which are then utilized to divide different patterns.

Image Restoration

Movable Antenna Enabled Symbiotic Radio Systems: An Opportunity for Mutualism

no code implementations11 Aug 2024 Chao Zhou, Bin Lyu, Changsheng You, Ziwei Liu

The utilization of MAs aims to enhance the secondary rate by optimizing the positions of MAs to improve the beam gain at the BD.

The Llama 3 Herd of Models

1 code implementation31 Jul 2024 Aaron Grattafiori, Abhimanyu Dubey, Abhinav Jauhri, Abhinav Pandey, Abhishek Kadian, Ahmad Al-Dahle, Aiesha Letman, Akhil Mathur, Alan Schelten, Alex Vaughan, Amy Yang, Angela Fan, Anirudh Goyal, Anthony Hartshorn, Aobo Yang, Archi Mitra, Archie Sravankumar, Artem Korenev, Arthur Hinsvark, Arun Rao, Aston Zhang, Aurelien Rodriguez, Austen Gregerson, Ava Spataru, Baptiste Roziere, Bethany Biron, Binh Tang, Bobbie Chern, Charlotte Caucheteux, Chaya Nayak, Chloe Bi, Chris Marra, Chris McConnell, Christian Keller, Christophe Touret, Chunyang Wu, Corinne Wong, Cristian Canton Ferrer, Cyrus Nikolaidis, Damien Allonsius, Daniel Song, Danielle Pintz, Danny Livshits, Danny Wyatt, David Esiobu, Dhruv Choudhary, Dhruv Mahajan, Diego Garcia-Olano, Diego Perino, Dieuwke Hupkes, Egor Lakomkin, Ehab AlBadawy, Elina Lobanova, Emily Dinan, Eric Michael Smith, Filip Radenovic, Francisco Guzmán, Frank Zhang, Gabriel Synnaeve, Gabrielle Lee, Georgia Lewis Anderson, Govind Thattai, Graeme Nail, Gregoire Mialon, Guan Pang, Guillem Cucurell, Hailey Nguyen, Hannah Korevaar, Hu Xu, Hugo Touvron, Iliyan Zarov, Imanol Arrieta Ibarra, Isabel Kloumann, Ishan Misra, Ivan Evtimov, Jack Zhang, Jade Copet, Jaewon Lee, Jan Geffert, Jana Vranes, Jason Park, Jay Mahadeokar, Jeet Shah, Jelmer Van der Linde, Jennifer Billock, Jenny Hong, Jenya Lee, Jeremy Fu, Jianfeng Chi, Jianyu Huang, Jiawen Liu, Jie Wang, Jiecao Yu, Joanna Bitton, Joe Spisak, Jongsoo Park, Joseph Rocca, Joshua Johnstun, Joshua Saxe, Junteng Jia, Kalyan Vasuden Alwala, Karthik Prasad, Kartikeya Upasani, Kate Plawiak, Ke Li, Kenneth Heafield, Kevin Stone, Khalid El-Arini, Krithika Iyer, Kshitiz Malik, Kuenley Chiu, Kunal Bhalla, Kushal Lakhotia, Lauren Rantala-Yeary, Laurens van der Maaten, Lawrence Chen, Liang Tan, Liz Jenkins, Louis Martin, Lovish Madaan, Lubo Malo, Lukas Blecher, Lukas Landzaat, Luke de Oliveira, Madeline Muzzi, Mahesh Pasupuleti, Mannat Singh, Manohar Paluri, Marcin Kardas, Maria Tsimpoukelli, Mathew Oldham, Mathieu Rita, Maya Pavlova, Melanie Kambadur, Mike Lewis, Min Si, Mitesh Kumar Singh, Mona Hassan, Naman Goyal, Narjes Torabi, Nikolay Bashlykov, Nikolay Bogoychev, Niladri Chatterji, Ning Zhang, Olivier Duchenne, Onur Çelebi, Patrick Alrassy, Pengchuan Zhang, Pengwei Li, Petar Vasic, Peter Weng, Prajjwal Bhargava, Pratik Dubal, Praveen Krishnan, Punit Singh Koura, Puxin Xu, Qing He, Qingxiao Dong, Ragavan Srinivasan, Raj Ganapathy, Ramon Calderer, Ricardo Silveira Cabral, Robert Stojnic, Roberta Raileanu, Rohan Maheswari, Rohit Girdhar, Rohit Patel, Romain Sauvestre, Ronnie Polidoro, Roshan Sumbaly, Ross Taylor, Ruan Silva, Rui Hou, Rui Wang, Saghar Hosseini, Sahana Chennabasappa, Sanjay Singh, Sean Bell, Seohyun Sonia Kim, Sergey Edunov, Shaoliang Nie, Sharan Narang, Sharath Raparthy, Sheng Shen, Shengye Wan, Shruti Bhosale, Shun Zhang, Simon Vandenhende, Soumya Batra, Spencer Whitman, Sten Sootla, Stephane Collot, Suchin Gururangan, Sydney Borodinsky, Tamar Herman, Tara Fowler, Tarek Sheasha, Thomas Georgiou, Thomas Scialom, Tobias Speckbacher, Todor Mihaylov, Tong Xiao, Ujjwal Karn, Vedanuj Goswami, Vibhor Gupta, Vignesh Ramanathan, Viktor Kerkez, Vincent Gonguet, Virginie Do, Vish Vogeti, Vítor Albiero, Vladan Petrovic, Weiwei Chu, Wenhan Xiong, Wenyin Fu, Whitney Meers, Xavier Martinet, Xiaodong Wang, Xiaofang Wang, Xiaoqing Ellen Tan, Xide Xia, Xinfeng Xie, Xuchao Jia, Xuewei Wang, Yaelle Goldschlag, Yashesh Gaur, Yasmine Babaei, Yi Wen, Yiwen Song, Yuchen Zhang, Yue Li, Yuning Mao, Zacharie Delpierre Coudert, Zheng Yan, Zhengxing Chen, Zoe Papakipos, Aaditya Singh, Aayushi Srivastava, Abha Jain, Adam Kelsey, Adam Shajnfeld, Adithya Gangidi, Adolfo Victoria, Ahuva Goldstand, Ajay Menon, Ajay Sharma, Alex Boesenberg, Alexei Baevski, Allie Feinstein, Amanda Kallet, Amit Sangani, Amos Teo, Anam Yunus, Andrei Lupu, Andres Alvarado, Andrew Caples, Andrew Gu, Andrew Ho, Andrew Poulton, Andrew Ryan, Ankit Ramchandani, Annie Dong, Annie Franco, Anuj Goyal, Aparajita Saraf, Arkabandhu Chowdhury, Ashley Gabriel, Ashwin Bharambe, Assaf Eisenman, Azadeh Yazdan, Beau James, Ben Maurer, Benjamin Leonhardi, Bernie Huang, Beth Loyd, Beto De Paola, Bhargavi Paranjape, Bing Liu, Bo Wu, Boyu Ni, Braden Hancock, Bram Wasti, Brandon Spence, Brani Stojkovic, Brian Gamido, Britt Montalvo, Carl Parker, Carly Burton, Catalina Mejia, Ce Liu, Changhan Wang, Changkyu Kim, Chao Zhou, Chester Hu, Ching-Hsiang Chu, Chris Cai, Chris Tindal, Christoph Feichtenhofer, Cynthia Gao, Damon Civin, Dana Beaty, Daniel Kreymer, Daniel Li, David Adkins, David Xu, Davide Testuggine, Delia David, Devi Parikh, Diana Liskovich, Didem Foss, Dingkang Wang, Duc Le, Dustin Holland, Edward Dowling, Eissa Jamil, Elaine Montgomery, Eleonora Presani, Emily Hahn, Emily Wood, Eric-Tuan Le, Erik Brinkman, Esteban Arcaute, Evan Dunbar, Evan Smothers, Fei Sun, Felix Kreuk, Feng Tian, Filippos Kokkinos, Firat Ozgenel, Francesco Caggioni, Frank Kanayet, Frank Seide, Gabriela Medina Florez, Gabriella Schwarz, Gada Badeer, Georgia Swee, Gil Halpern, Grant Herman, Grigory Sizov, Guangyi, Zhang, Guna Lakshminarayanan, Hakan Inan, Hamid Shojanazeri, Han Zou, Hannah Wang, Hanwen Zha, Haroun Habeeb, Harrison Rudolph, Helen Suk, Henry Aspegren, Hunter Goldman, Hongyuan Zhan, Ibrahim Damlaj, Igor Molybog, Igor Tufanov, Ilias Leontiadis, Irina-Elena Veliche, Itai Gat, Jake Weissman, James Geboski, James Kohli, Janice Lam, Japhet Asher, Jean-Baptiste Gaya, Jeff Marcus, Jeff Tang, Jennifer Chan, Jenny Zhen, Jeremy Reizenstein, Jeremy Teboul, Jessica Zhong, Jian Jin, Jingyi Yang, Joe Cummings, Jon Carvill, Jon Shepard, Jonathan McPhie, Jonathan Torres, Josh Ginsburg, Junjie Wang, Kai Wu, Kam Hou U, Karan Saxena, Kartikay Khandelwal, Katayoun Zand, Kathy Matosich, Kaushik Veeraraghavan, Kelly Michelena, Keqian Li, Kiran Jagadeesh, Kun Huang, Kunal Chawla, Kyle Huang, Lailin Chen, Lakshya Garg, Lavender A, Leandro Silva, Lee Bell, Lei Zhang, Liangpeng Guo, Licheng Yu, Liron Moshkovich, Luca Wehrstedt, Madian Khabsa, Manav Avalani, Manish Bhatt, Martynas Mankus, Matan Hasson, Matthew Lennie, Matthias Reso, Maxim Groshev, Maxim Naumov, Maya Lathi, Meghan Keneally, Miao Liu, Michael L. Seltzer, Michal Valko, Michelle Restrepo, Mihir Patel, Mik Vyatskov, Mikayel Samvelyan, Mike Clark, Mike Macey, Mike Wang, Miquel Jubert Hermoso, Mo Metanat, Mohammad Rastegari, Munish Bansal, Nandhini Santhanam, Natascha Parks, Natasha White, Navyata Bawa, Nayan Singhal, Nick Egebo, Nicolas Usunier, Nikhil Mehta, Nikolay Pavlovich Laptev, Ning Dong, Norman Cheng, Oleg Chernoguz, Olivia Hart, Omkar Salpekar, Ozlem Kalinli, Parkin Kent, Parth Parekh, Paul Saab, Pavan Balaji, Pedro Rittner, Philip Bontrager, Pierre Roux, Piotr Dollar, Polina Zvyagina, Prashant Ratanchandani, Pritish Yuvraj, Qian Liang, Rachad Alao, Rachel Rodriguez, Rafi Ayub, Raghotham Murthy, Raghu Nayani, Rahul Mitra, Rangaprabhu Parthasarathy, Raymond Li, Rebekkah Hogan, Robin Battey, Rocky Wang, Russ Howes, Ruty Rinott, Sachin Mehta, Sachin Siby, Sai Jayesh Bondu, Samyak Datta, Sara Chugh, Sara Hunt, Sargun Dhillon, Sasha Sidorov, Satadru Pan, Saurabh Mahajan, Saurabh Verma, Seiji Yamamoto, Sharadh Ramaswamy, Shaun Lindsay, Sheng Feng, Shenghao Lin, Shengxin Cindy Zha, Shishir Patil, Shiva Shankar, Shuqiang Zhang, Sinong Wang, Sneha Agarwal, Soji Sajuyigbe, Soumith Chintala, Stephanie Max, Stephen Chen, Steve Kehoe, Steve Satterfield, Sudarshan Govindaprasad, Sumit Gupta, Summer Deng, Sungmin Cho, Sunny Virk, Suraj Subramanian, Sy Choudhury, Sydney Goldman, Tal Remez, Tamar Glaser, Tamara Best, Thilo Koehler, Thomas Robinson, Tianhe Li, Tianjun Zhang, Tim Matthews, Timothy Chou, Tzook Shaked, Varun Vontimitta, Victoria Ajayi, Victoria Montanez, Vijai Mohan, Vinay Satish Kumar, Vishal Mangla, Vlad Ionescu, Vlad Poenaru, Vlad Tiberiu Mihailescu, Vladimir Ivanov, Wei Li, Wenchen Wang, WenWen Jiang, Wes Bouaziz, Will Constable, Xiaocheng Tang, Xiaojian Wu, Xiaolan Wang, Xilun Wu, Xinbo Gao, Yaniv Kleinman, Yanjun Chen, Ye Hu, Ye Jia, Ye Qi, Yenda Li, Yilin Zhang, Ying Zhang, Yossi Adi, Youngjin Nam, Yu, Wang, Yu Zhao, Yuchen Hao, Yundi Qian, Yunlu Li, Yuzi He, Zach Rait, Zachary DeVito, Zef Rosnbrick, Zhaoduo Wen, Zhenyu Yang, Zhiwei Zhao, Zhiyu Ma

This paper presents a new set of foundation models, called Llama 3.

Language Modelling Multi-task Language Understanding +2

QPT V2: Masked Image Modeling Advances Visual Scoring

1 code implementation23 Jul 2024 Qizhi Xie, Kun Yuan, Yunpeng Qu, Mingda Wu, Ming Sun, Chao Zhou, Jihong Zhu

To this end, we propose Quality- and aesthetics-aware pretraining (QPT V2), the first pretraining framework based on MIM that offers a unified solution to quality and aesthetics assessment.

A New Dataset and Framework for Real-World Blurred Images Super-Resolution

1 code implementation20 Jul 2024 Rui Qin, Ming Sun, Chao Zhou, Bin Wang

However, we find that the efficacy of recent methods obviously diminishes when employed on image data with blur, while image data with intentional blur constitute a substantial proportion of general data.

Disentanglement Image Super-Resolution

$L_p$-norm Distortion-Efficient Adversarial Attack

no code implementations3 Jul 2024 Chao Zhou, Yuan-Gen Wang, Zi-jia Wang, Xiangui Kang

Adversarial examples have shown a powerful ability to make a well-trained model misclassified.

Adversarial Attack Adversarial Defense +1

Query-Efficient Hard-Label Black-Box Attack against Vision Transformers

no code implementations29 Jun 2024 Chao Zhou, Xiaowen Shi, Yuan-Gen Wang

Moreover, we design a weight mask matrix for all patches to further optimize the perturbation on different regions of a whole image.

Adversarial Attack

STAL3D: Unsupervised Domain Adaptation for 3D Object Detection via Collaborating Self-Training and Adversarial Learning

no code implementations27 Jun 2024 Yanan Zhang, Chao Zhou, Di Huang

Existing 3D object detection suffers from expensive annotation costs and poor transferability to unknown data due to the domain gap, Unsupervised Domain Adaptation (UDA) aims to generalize detection models trained in labeled source domains to perform robustly on unexplored target domains, providing a promising solution for cross-domain 3D object detection.

3D Object Detection object-detection +1

Energy-storing analysis and fishtail stiffness optimization for a wire-driven elastic robotic fish

no code implementations6 Jun 2024 Xiaocun Liao, Chao Zhou, Junfeng Fan, Zhuoliang Zhang, Zhaoran Yin, Liangwei Deng

Results validate that the energy-storing of the active-segment elastic spine plays a vital role in improving the power fluctuations and maximum frequency of the motor by adjusting its stiffness reasonably, which is beneficial to achieving high propulsion and high speed for robotic fish.

Cantilever Beam

PTM-VQA: Efficient Video Quality Assessment Leveraging Diverse PreTrained Models from the Wild

no code implementations CVPR 2024 Kun Yuan, Hongbo Liu, Mading Li, Muyi Sun, Ming Sun, Jiachao Gong, Jinhua Hao, Chao Zhou, Yansong Tang

In this paper, we propose a VQA method named PTM-VQA, which leverages PreTrained Models to transfer knowledge from models pretrained on various pre-tasks, enabling benefits for VQA from different aspects.

Video Quality Assessment Visual Question Answering (VQA)

©Plug-in Authorization for Human Content Copyright Protection in Text-to-Image Model

no code implementations18 Apr 2024 Chao Zhou, Huishuai Zhang, Jiang Bian, Weiming Zhang, Nenghai Yu

To mitigate this, we propose the \copyright Plug-in Authorization framework, introducing three operations: addition, extraction, and combination.

Convergence analysis of controlled particle systems arising in deep learning: from finite to infinite sample size

no code implementations8 Apr 2024 Huafu Liao, Alpár R. Mészáros, Chenchen Mou, Chao Zhou

Using these uniform regularity results, we show the convergence of the minima of objective functionals and optimal parameters of the neural SDEs as the sample size N tends to infinity.

CasSR: Activating Image Power for Real-World Image Super-Resolution

no code implementations18 Mar 2024 Haolan Chen, Jinhua Hao, Kai Zhao, Kun Yuan, Ming Sun, Chao Zhou, Wei Hu

In particular, we develop a cascaded controllable diffusion model that aims to optimize the extraction of information from low-resolution images.

Image Restoration Image Super-Resolution

CPGA: Coding Priors-Guided Aggregation Network for Compressed Video Quality Enhancement

1 code implementation CVPR 2024 Qiang Zhu, Jinhua Hao, Yukang Ding, Yu Liu, Qiao Mo, Ming Sun, Chao Zhou, Shuyuan Zhu

Specifically, the ITA module aggregates temporal information from consecutive frames and coding priors, while the MNA module globally captures spatial information guided by residual frames.

XPSR: Cross-modal Priors for Diffusion-based Image Super-Resolution

1 code implementation8 Mar 2024 Yunpeng Qu, Kun Yuan, Kai Zhao, Qizhi Xie, Jinhua Hao, Ming Sun, Chao Zhou

Diffusion-based methods, endowed with a formidable generative prior, have received increasing attention in Image Super-Resolution (ISR) recently.

Image Super-Resolution

KVQ: Kwai Video Quality Assessment for Short-form Videos

1 code implementation CVPR 2024 Yiting Lu, Xin Li, Yajing Pei, Kun Yuan, Qizhi Xie, Yunpeng Qu, Ming Sun, Chao Zhou, Zhibo Chen

Short-form UGC video platforms, like Kwai and TikTok, have been an emerging and irreplaceable mainstream media form, thriving on user-friendly engagement, and kaleidoscope creation, etc.

Video Quality Assessment Visual Question Answering (VQA)

Decoding Mean Field Games from Population and Environment Observations By Gaussian Processes

no code implementations8 Dec 2023 Jinyan Guo, Chenchen Mou, Xianjin Yang, Chao Zhou

This paper presents a Gaussian Process (GP) framework, a non-parametric technique widely acknowledged for regression and classification tasks, to address inverse problems in mean field games (MFGs).

Gaussian Processes regression

Forecasting Volatility with Machine Learning and Rough Volatility: Example from the Crypto-Winter

no code implementations8 Nov 2023 Siu Hin Tang, Mathieu Rosenbaum, Chao Zhou

We extend the application and test the performance of a recently introduced volatility prediction framework encompassing LSTM and rough volatility.

Feature Space Renormalization for Semi-supervised Learning

no code implementations7 Nov 2023 Jun Sun, Zhongjie Mao, Chao Li, Chao Zhou, Xiao-Jun Wu

The common framework among recent approaches is to train the model on a large amount of unlabelled data with consistency regularization to constrain the model predictions to be invariant to input perturbation.

Dimension Independent Mixup for Hard Negative Sample in Collaborative Filtering

1 code implementation28 Jun 2023 Xi Wu, Liangwei Yang, Jibing Gong, Chao Zhou, Tianyu Lin, Xiaolong Liu, Philip S. Yu

To address this limitation, we propose Dimension Independent Mixup for Hard Negative Sampling (DINS), which is the first Area-wise sampling method for training CF-based models.

Collaborative Filtering

Robust Equilibrium Strategy for Mean-Variance Portfolio Selection

no code implementations11 May 2023 Mengge Li, Shuaijie Qian, Chao Zhou

Under our definition, a classical solution to the corresponding PDE system implies a robust equilibrium strategy.

OcTr: Octree-based Transformer for 3D Object Detection

no code implementations CVPR 2023 Chao Zhou, Yanan Zhang, Jiaxin Chen, Di Huang

A key challenge for LiDAR-based 3D object detection is to capture sufficient features from large scale 3D scenes especially for distant or/and occluded objects.

3D Object Detection Object +1

Paraphrase Identification with Deep Learning: A Review of Datasets and Methods

no code implementations13 Dec 2022 Chao Zhou, Cheng Qiu, Lizhen Liang, Daniel E. Acuna

The rapid progress of Natural Language Processing (NLP) technologies has led to the widespread availability and effectiveness of text generation tools such as ChatGPT and Claude.

Paraphrase Identification Text Generation

Object-Attentional Untargeted Adversarial Attack

no code implementations16 Oct 2022 Chao Zhou, Yuan-Gen Wang, Guopu Zhu

Specifically, we first generate an object region by intersecting the object detection region from YOLOv4 with the salient object detection (SOD) region from HVPNet.

Adversarial Attack Object +3

Robust control problems of BSDEs coupled with value functions

no code implementations23 Aug 2022 Zhou Yang, Jing Zhang, Chao Zhou

A robust control problem is considered in this paper, where the controlled stochastic differential equations (SDEs) include ambiguity parameters and their coefficients satisfy non-Lipschitz continuous and non-linear growth conditions, the objective function is expressed as a backward stochastic differential equation (BSDE) with the generator depending on the value function.

Power Forward Performance in Semimartingale Markets with Stochastic Integrated Factors

no code implementations24 Jan 2022 Lijun Bo, Agostino Capponi, Chao Zhou

We study the forward investment performance process (FIPP) in an incomplete semimartingale market model with closed and convex portfolio constraints, when the investor's risk preferences are of the power form.

Triplet

Robust lEarned Shrinkage-Thresholding (REST): Robust unrolling for sparse recover

no code implementations20 Oct 2021 Wei Pu, Chao Zhou, Yonina C. Eldar, Miguel R. D. Rodrigues

In this paper, we consider deep neural networks for solving inverse problems that are robust to forward model mis-specifications.

Compressive Sensing Rolling Shutter Correction

Mean Field Portfolio Games

no code implementations11 Jun 2021 Guanxing Fu, Chao Zhou

We study mean field portfolio games with random market parameters, where each player is concerned with not only her own wealth but also relative performance to her competitors.

The Discovery of Dynamics via Linear Multistep Methods and Deep Learning: Error Estimation

1 code implementation21 Mar 2021 Qiang Du, Yiqi Gu, Haizhao Yang, Chao Zhou

We put forward error estimates for these methods using the approximation property of deep networks.

Relative wealth concerns with partial information and heterogeneous priors

no code implementations23 Jul 2020 Chao Deng, Xizhi Su, Chao Zhou

We observe that the agent with the most accurate prior estimate is likely to lead the herd, and the effect of competition on heterogeneous agents varies more with market characteristics compared to the homogeneous case.

Hyperspectral Unmixing Network Inspired by Unfolding an Optimization Problem

no code implementations21 May 2020 Chao Zhou

We first consider a linear mixture model with sparsity constraint, then we unfold Alternating Direction Method of Multipliers (ADMM) algorithm to construct the unmixing network structures.

Hyperspectral Unmixing

Deep learning for smart fish farming: applications, opportunities and challenges

no code implementations6 Apr 2020 Xinting Yang, Song Zhang, Jintao Liu, Qinfeng Gao, Shuanglin Dong, Chao Zhou

This change can create new opportunities and a series of challenges for information and data processing in smart fish farming.

Decision Making Deep Learning

Balance Between Efficient and Effective Learning: Dense2Sparse Reward Shaping for Robot Manipulation with Environment Uncertainty

no code implementations5 Mar 2020 Yongle Luo, Kun Dong, Lili Zhao, Zhiyong Sun, Chao Zhou, Bo Song

The experiment results show that the Dense2Sparse method obtained higher expected reward compared with the ones using standalone dense reward or sparse reward, and it also has a superior tolerance of system uncertainty.

Deep Reinforcement Learning Robot Manipulation

Lifetime Ruin under High-watermark Fees and Drift Uncertainty

no code implementations3 Sep 2019 Junbeom Lee, Xiang Yu, Chao Zhou

This paper aims to make a new contribution to the study of lifetime ruin problem by considering investment in two hedge funds with high-watermark fees and drift uncertainty.

Dimensionality Reduction Vocal Bursts Intensity Prediction

Comyco: Quality-Aware Adaptive Video Streaming via Imitation Learning

1 code implementation6 Aug 2019 Tianchi Huang, Chao Zhou, Rui-Xiao Zhang, Chenglei Wu, Xin Yao, Lifeng Sun

Using trace-driven and real-world experiments, we demonstrate significant improvements of Comyco's sample efficiency in comparison to prior work, with 1700x improvements in terms of the number of samples required and 16x improvements on training time required.

Imitation Learning

Portfolio diversification and model uncertainty: a robust dynamic mean-variance approach

no code implementations5 Sep 2018 Huyen Pham, Xiaoli Wei, Chao Zhou

The dynamic setting allows us to consider time varying ambiguity sets, which include the cases where the drift and correlation are estimated on a rolling window of historical data or when the investor takes into account learning on the ambiguity.

Pressure Predictions of Turbine Blades with Deep Learning

no code implementations12 Jun 2018 Cheng'an Bai, Chao Zhou

Deep learning has been used in many areas, such as feature detections in images and the game of go.

Deep Learning Game of Go

Unsupervised Learning of Stereo Matching

no code implementations ICCV 2017 Chao Zhou, Hong Zhang, Xiaoyong Shen, Jiaya Jia

However, due to the limitations of these datasets and the difficulty of collecting new stereo data, current methods fail in real-life cases.

Stereo Matching Stereo Matching Hand

Zero-order Reverse Filtering

1 code implementation ICCV 2017 Xin Tao, Chao Zhou, Xiaoyong Shen, Jue Wang, Jiaya Jia

In this paper, we study an unconventional but practically meaningful reversibility problem of commonly used image filters.

High-Quality Correspondence and Segmentation Estimation for Dual-Lens Smart-Phone Portraits

no code implementations ICCV 2017 Xiaoyong Shen, Hongyun Gao, Xin Tao, Chao Zhou, Jiaya Jia

Estimating correspondence between two images and extracting the foreground object are two challenges in computer vision.

Binary Funding Impacts in Derivative Valuation

no code implementations1 Mar 2017 Junbeom Lee, Chao Zhou

It is often believed that considering both DVA and funding benefits results in a double-counting issue but it will be shown that the two components are affected by different mathematical structures of derivative transactions.

Mutual-Structure for Joint Filtering

no code implementations ICCV 2015 Xiaoyong Shen, Chao Zhou, Li Xu, Jiaya Jia

Previous joint/guided filters directly transfer the structural information in the reference image to the target one.

Depth Completion Image Enhancement +3

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