Search Results for author: Qing Xu

Found 31 papers, 17 papers with code

Improve Knowledge Distillation via Label Revision and Data Selection

no code implementations3 Apr 2024 Weichao Lan, Yiu-ming Cheung, Qing Xu, Buhua Liu, Zhikai Hu, Mengke Li, Zhenghua Chen

In addition to the supervision of ground truth, the vanilla KD method regards the predictions of the teacher as soft labels to supervise the training of the student model.

Knowledge Distillation Model Compression

UN-SAM: Universal Prompt-Free Segmentation for Generalized Nuclei Images

1 code implementation26 Feb 2024 Zhen Chen, Qing Xu, Xinyu Liu, Yixuan Yuan

Moreover, to unleash the generalization capability of SAM across a variety of nuclei images, we devise a Domain-adaptive Tuning Encoder (DT-Encoder) to seamlessly harmonize visual features with domain-common and domain-specific knowledge, and further devise a Domain Query-enhanced Decoder (DQ-Decoder) by leveraging learnable domain queries for segmentation decoding in different nuclei domains.

Segmentation Semantic Segmentation

VADv2: End-to-End Vectorized Autonomous Driving via Probabilistic Planning

no code implementations20 Feb 2024 Shaoyu Chen, Bo Jiang, Hao Gao, Bencheng Liao, Qing Xu, Qian Zhang, Chang Huang, Wenyu Liu, Xinggang Wang

Learning a human-like driving policy from large-scale driving demonstrations is promising, but the uncertainty and non-deterministic nature of planning make it challenging.

Autonomous Driving

Cloud Control of Connected Vehicle under Bi-directional Time-varying delay: An Application of Predictor-observer Structured Controller

no code implementations5 Sep 2023 Ji-An Pan, Qing Xu, Keqiang Li, Chunying Yang, Jianqiang Wang

This article is devoted to addressing the cloud control of connected vehicles, specifically focusing on analyzing the effect of bi-directional communication-induced delays.

Information Flow Topology in Mixed Traffic: A Comparative Study between "Looking Ahead" and "Looking Behind"

no code implementations4 Sep 2023 Shuai Li, Haotian Zheng, Jiawei Wang, Chaoyi Chen, Qing Xu, Jianqiang Wang, Keqiang Li

In mixed traffic where human-driven vehicles (HDVs) also exist, existing research mostly focuses on "looking ahead" (i. e., the CAVs receive information from preceding vehicles) strategies for CAVs, while recent work reveals that "looking behind" (i. e., the CAVs receive information from their rear vehicles) strategies might provide more possibilities for CAV longitudinal control.

SPPNet: A Single-Point Prompt Network for Nuclei Image Segmentation

6 code implementations23 Aug 2023 Qing Xu, Wenwei Kuang, Zeyu Zhang, Xueyao Bao, Haoran Chen, Wenting Duan

Compared to the segment anything model, SPPNet shows roughly 20 times faster inference, with 1/70 parameters and computational cost.

Cell Segmentation Image Segmentation +2

Distilling Universal and Joint Knowledge for Cross-Domain Model Compression on Time Series Data

1 code implementation7 Jul 2023 Qing Xu, Min Wu, XiaoLi Li, Kezhi Mao, Zhenghua Chen

More specifically, a feature-domain discriminator is employed to align teacher's and student's representations for universal knowledge transfer.

Knowledge Distillation Model Compression +2

Sea Ice Extraction via Remote Sensed Imagery: Algorithms, Datasets, Applications and Challenges

no code implementations1 Jun 2023 Anzhu Yu, Wenjun Huang, Qing Xu, Qun Sun, Wenyue Guo, Song Ji, Bowei Wen, Chunping Qiu

The deep learning, which is a dominating technique in artificial intelligence, has completely changed the image understanding over the past decade.

Image Segmentation Semantic Segmentation

Improving Empathetic Dialogue Generation by Dynamically Infusing Commonsense Knowledge

1 code implementation24 May 2023 Hua Cai, Xuli Shen, Qing Xu, Weilin Shen, Xiaomei Wang, Weifeng Ge, Xiaoqing Zheng, xiangyang xue

To this end, we propose a novel approach for empathetic response generation, which incorporates an adaptive module for commonsense knowledge selection to ensure consistency between the generated empathetic responses and the speaker's situation.

Dialogue Generation Empathetic Response Generation +1

Semi-supervised Road Updating Network (SRUNet): A Deep Learning Method for Road Updating from Remote Sensing Imagery and Historical Vector Maps

no code implementations28 Apr 2023 Xin Chen, Anzhu Yu, Qun Sun, Wenyue Guo, Qing Xu, Bowei Wen

However, obtaining bi-phase images for the same area is difficult, and complex post-processing methods are required to update the existing databases. To solve these problems, we proposed a road detection method based on semi-supervised learning (SRUNet) specifically for road-updating applications; in this approach, historical road information was fused with the latest images to directly obtain the latest state of the road. Considering that the texture of a road is complex, a multi-branch network, named the Map Encoding Branch (MEB) was proposed for representation learning, where the Boundary Enhancement Module (BEM) was used to improve the accuracy of boundary prediction, and the Residual Refinement Module (RRM) was used to optimize the prediction results.

Representation Learning

VAD: Vectorized Scene Representation for Efficient Autonomous Driving

2 code implementations ICCV 2023 Bo Jiang, Shaoyu Chen, Qing Xu, Bencheng Liao, Jiajie Chen, Helong Zhou, Qian Zhang, Wenyu Liu, Chang Huang, Xinggang Wang

In this paper, we propose VAD, an end-to-end vectorized paradigm for autonomous driving, which models the driving scene as a fully vectorized representation.

Autonomous Driving Trajectory Planning

Weakly Supervised Learning of Semantic Correspondence through Cascaded Online Correspondence Refinement

1 code implementation ICCV 2023 Yiwen Huang, Yixuan Sun, Chenghang Lai, Qing Xu, Xiaomei Wang, Xuli Shen, Weifeng Ge

Following the spirit of multiple instance learning (MIL), we decompose the weakly supervised correspondence learning problem into three stages: image-level matching, region-level matching, and pixel-level matching.

Multiple Instance Learning Semantic correspondence +1

Distributed data-driven predictive control for cooperatively smoothing mixed traffic flow

1 code implementation24 Oct 2022 Jiawei Wang, Yingzhao Lian, Yuning Jiang, Qing Xu, Keqiang Li, Colin N. Jones

This algorithm achieves both computation and communication efficiency, as well as trajectory data privacy, through parallel calculation.

LEMMA

M$^2$DQN: A Robust Method for Accelerating Deep Q-learning Network

1 code implementation16 Sep 2022 Zhe Zhang, Yukun Zou, Junjie Lai, Qing Xu

Deep Q-learning Network (DQN) is a successful way which combines reinforcement learning with deep neural networks and leads to a widespread application of reinforcement learning.

Q-Learning reinforcement-learning +1

Implementation and Experimental Validation of Data-Driven Predictive Control for Dissipating Stop-and-Go Waves in Mixed Traffic

1 code implementation7 Apr 2022 Jiawei Wang, Yang Zheng, Jianghong Dong, Chaoyi Chen, Mengchi Cai, Keqiang Li, Qing Xu

In this paper, we present the first experimental results of data-driven predictive control for connected and autonomous vehicles (CAVs) in dissipating traffic waves.

Autonomous Vehicles Traffic Prediction

DeeP-LCC: Data-EnablEd Predictive Leading Cruise Control in Mixed Traffic Flow

1 code implementation20 Mar 2022 Jiawei Wang, Yang Zheng, Keqiang Li, Qing Xu

For the control of connected and autonomous vehicles (CAVs), most existing methods focus on model-based strategies.

Autonomous Vehicles LEMMA

DCSAU-Net: A Deeper and More Compact Split-Attention U-Net for Medical Image Segmentation

1 code implementation2 Feb 2022 Qing Xu, Zhicheng Ma, Na He, Wenting Duan

Deep learning architecture with convolutional neural network (CNN) achieves outstanding success in the field of computer vision.

Image Segmentation Lesion Segmentation +1

Experimental Validation of Multi-lane Formation Control for Connected and Automated Vehicles in Multiple Scenarios

no code implementations1 Dec 2021 Mengchi Cai, Qing Xu, Chunying Yang, Jianghong Dong, Chaoyi Chen, Jiawei Wang, Jianqiang Wang, Keqiang Li

Formation control methods of connected and automated vehicles have been proposed to smoothly switch the structure of vehicular formations in different scenarios.

Multi-vehicle experiment platform: A Digital Twin Realization Method

no code implementations25 Oct 2021 Chunying Yang, Jianghong Dong, Qing Xu, Mengchi Cai, Hongmao Qin, Jianqiang Wang, Keqiang Li

To confirm effectiveness of this method, a prototype system is developed, which consists of sand table testbed, its twin system and cloud.

Data-Driven Predictive Control for Connected and Autonomous Vehicles in Mixed Traffic

no code implementations19 Oct 2021 Jiawei Wang, Yang Zheng, Qing Xu, Keqiang Li

In this paper, instead of relying on a parametric car-following model, we introduce a data-driven predictive control strategy to achieve safe and optimal control for CAVs in mixed traffic.

Autonomous Vehicles

Multi-lane Unsignalized Intersection Cooperation with Flexible Lane Direction based on Multi-vehicle Formation Control

3 code implementations25 Aug 2021 Mengchi Cai, Qing Xu, Chaoyi Chen, Jiawei Wang, Keqiang Li, Jianqiang Wang, Xiangbin Wu

Unsignalized intersection cooperation of connected and automated vehicles (CAVs) is able to eliminate green time loss of signalized intersections and improve traffic efficiency.

Feedback Refined Local-Global Network for Super-Resolution of Hyperspectral Imagery

no code implementations7 Mar 2021 Zhenjie Tang, Qing Xu, Zhenwei Shi, Bin Pan

To be specific, we develop a new Feedback Structure and a Local-Global Spectral Block to alleviate the difficulty in spatial and spectral feature extraction.

Hyperspectral Image Super-Resolution Image Super-Resolution

Disease Prediction with a Maximum Entropy Method

no code implementations3 Feb 2021 Michael Shub, Qing Xu, Xiaohua, Xuan

In this paper, we propose a maximum entropy method for predicting disease risks.

Disease Prediction

Efficient erbium-doped thin-film lithium niobate waveguide amplifiers

no code implementations18 Jan 2021 Zhaoxi Chen, Qing Xu, Ke Zhang, Wing-Han Wong, De-Long Zhang, Edwin Yue-Bun Pun, Cheng Wang

Lithium niobate on insulator (LNOI) is an emerging photonic platform with great promises for future optical communications, nonlinear optics and microwave photonics.

Optics Applied Physics

Leading Cruise Control in Mixed Traffic Flow: System Modeling, Controllability, and String Stability

1 code implementation8 Dec 2020 Jiawei Wang, Yang Zheng, Chaoyi Chen, Qing Xu, Keqiang Li

Most existing strategies for CAVs' longitudinal control focus on downstream traffic conditions, but neglect the impact of CAVs' behaviors on upstream traffic flow.

Autonomous Vehicles

Nonlinear Monte Carlo Method for Imbalanced Data Learning

no code implementations27 Oct 2020 Xuli Shen, Qing Xu, xiangyang xue

and the mean value of loss function is used as the empirical risk by Law of Large Numbers (LLN).

imbalanced classification

Leading Cruise Control in Mixed Traffic Flow

1 code implementation23 Jul 2020 Jiawei Wang, Yang Zheng, Chaoyi Chen, Qing Xu, Keqiang Li

Numerical studies confirm the potential of LCC to strengthen the capability of CAVs in suppressing traffic instabilities and smoothing traffic flow.

Systems and Control Systems and Control Optimization and Control

Nonlinear Regression without i.i.d. Assumption

no code implementations23 Nov 2018 Qing Xu, Xiaohua Xuan

In this paper, we consider a class of nonlinear regression problems without the assumption of being independent and identically distributed.

BIG-bench Machine Learning regression

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