Search Results for author: Jiaxin Chen

Found 38 papers, 15 papers with code

iVPT: Improving Task-relevant Information Sharing in Visual Prompt Tuning by Cross-layer Dynamic Connection

no code implementations8 Apr 2024 Nan Zhou, Jiaxin Chen, Di Huang

It innovatively incorporates a cross-layer dynamic connection (CDC) for input prompt tokens from adjacent layers, enabling effective sharing of task-relevant information.

Image Classification Semantic Segmentation +1

Using Human Feedback to Fine-tune Diffusion Models without Any Reward Model

1 code implementation22 Nov 2023 Kai Yang, Jian Tao, Jiafei Lyu, Chunjiang Ge, Jiaxin Chen, Qimai Li, Weihan Shen, Xiaolong Zhu, Xiu Li

The direct preference optimization (DPO) method, effective in fine-tuning large language models, eliminates the necessity for a reward model.

Denoising

DR-Tune: Improving Fine-tuning of Pretrained Visual Models by Distribution Regularization with Semantic Calibration

1 code implementation ICCV 2023 Nan Zhou, Jiaxin Chen, Di Huang

Furthermore, to alleviate the interference by semantic drift, we develop the semantic calibration (SC) module to align the global shape and class centers of the pretrained and downstream feature distributions.

General Knowledge Image Classification

CTP-Net: Character Texture Perception Network for Document Image Forgery Localization

no code implementations4 Aug 2023 Xin Liao, Siliang Chen, Jiaxin Chen, Tianyi Wang, Xiehua Li

We design a Character Texture Stream (CTS) based on optical character recognition to capture features of text areas that are essential components of a document image.

Image Forensics Optical Character Recognition

Adaptive Sparse Convolutional Networks with Global Context Enhancement for Faster Object Detection on Drone Images

1 code implementation CVPR 2023 Bowei Du, Yecheng Huang, Jiaxin Chen, Di Huang

Object detection on drone images with low-latency is an important but challenging task on the resource-constrained unmanned aerial vehicle (UAV) platform.

object-detection Object Detection

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

Recon: Reducing Conflicting Gradients from the Root for Multi-Task Learning

1 code implementation22 Feb 2023 Guangyuan Shi, Qimai Li, Wenlong Zhang, Jiaxin Chen, Xiao-Ming Wu

Our experiments show that such a simple approach can greatly reduce the occurrence of conflicting gradients in the remaining shared layers and achieve better performance, with only a slight increase in model parameters in many cases.

Multi-Task Learning

Emergent collective intelligence from massive-agent cooperation and competition

1 code implementation4 Jan 2023 HanMo Chen, Stone Tao, Jiaxin Chen, Weihan Shen, Xihui Li, Chenghui Yu, Sikai Cheng, Xiaolong Zhu, Xiu Li

Since these learned group strategies arise from individual decisions without an explicit coordination mechanism, we claim that artificial collective intelligence emerges from massive-agent cooperation and competition.

reinforcement-learning Reinforcement Learning (RL)

Multi-Agent Path Finding via Tree LSTM

1 code implementation24 Oct 2022 Yuhao Jiang, Kunjie Zhang, Qimai Li, Jiaxin Chen, Xiaolong Zhu

In recent years, Multi-Agent Path Finding (MAPF) has attracted attention from the fields of both Operations Research (OR) and Reinforcement Learning (RL).

Multi-Agent Path Finding reinforcement-learning +1

Representation Learning for Compressed Video Action Recognition via Attentive Cross-modal Interaction with Motion Enhancement

no code implementations7 May 2022 Bing Li, Jiaxin Chen, Dongming Zhang, Xiuguo Bao, Di Huang

To address the two issues above, this paper proposes a novel framework, namely Attentive Cross-modal Interaction Network with Motion Enhancement (MEACI-Net).

Action Recognition Denoising +2

Entropy-based Active Learning for Object Detection with Progressive Diversity Constraint

no code implementations CVPR 2022 Jiaxi Wu, Jiaxin Chen, Di Huang

Active learning is a promising alternative to alleviate the issue of high annotation cost in the computer vision tasks by consciously selecting more informative samples to label.

Active Learning object-detection +1

Target-Relevant Knowledge Preservation for Multi-Source Domain Adaptive Object Detection

no code implementations CVPR 2022 Jiaxi Wu, Jiaxin Chen, Mengzhe He, Yiru Wang, Bo Li, Bingqi Ma, Weihao Gan, Wei Wu, Yali Wang, Di Huang

Specifically, TRKP adopts the teacher-student framework, where the multi-head teacher network is built to extract knowledge from labeled source domains and guide the student network to learn detectors in unlabeled target domain.

Disentanglement Domain Adaptation +2

CAT-Det: Contrastively Augmented Transformer for Multi-modal 3D Object Detection

no code implementations CVPR 2022 Yanan Zhang, Jiaxin Chen, Di Huang

In autonomous driving, LiDAR point-clouds and RGB images are two major data modalities with complementary cues for 3D object detection.

3D Object Detection Autonomous Driving +4

UFPMP-Det: Toward Accurate and Efficient Object Detection on Drone Imagery

no code implementations20 Dec 2021 Yecheng Huang, Jiaxin Chen, Di Huang

This paper proposes a novel approach to object detection on drone imagery, namely Multi-Proxy Detection Network with Unified Foreground Packing (UFPMP-Det).

object-detection Object Detection

Overcoming Catastrophic Forgetting in Incremental Few-Shot Learning by Finding Flat Minima

1 code implementation NeurIPS 2021 Guangyuan Shi, Jiaxin Chen, Wenlong Zhang, Li-Ming Zhan, Xiao-Ming Wu

Our study shows that existing methods severely suffer from catastrophic forgetting, a well-known problem in incremental learning, which is aggravated due to data scarcity and imbalance in the few-shot setting.

Few-Shot Class-Incremental Learning Few-Shot Learning +1

Adaptation-Agnostic Meta-Training

1 code implementation ICML Workshop AutoML 2021 Jiaxin Chen, Li-Ming Zhan, Xiao-Ming Wu, Fu-Lai Chung

Many meta-learning algorithms can be formulated into an interleaved process, in the sense that task-specific predictors are learned during inner-task adaptation and meta-parameters are updated during meta-update.

Meta-Learning

PR-GCN: A Deep Graph Convolutional Network with Point Refinement for 6D Pose Estimation

no code implementations ICCV 2021 Guangyuan Zhou, Huiqun Wang, Jiaxin Chen, Di Huang

This paper proposes a novel deep learning approach, namely Graph Convolutional Network with Point Refinement (PR-GCN), to simultaneously address the issues above in a unified way.

6D Pose Estimation

Video Person Re-identification using Attribute-enhanced Features

no code implementations16 Aug 2021 Tianrui Chai, ZhiYuan Chen, Annan Li, Jiaxin Chen, Xinyu Mei, Yunhong Wang

Video-based person re-identification (Re-ID) which aims to associate people across non-overlapping cameras using surveillance video is a challenging task.

Attribute Video-Based Person Re-Identification

Learning Multi-Granular Hypergraphs for Video-Based Person Re-Identification

1 code implementation CVPR 2020 Yichao Yan, Jie Qin1, Jiaxin Chen, Li Liu, Fan Zhu, Ying Tai, Ling Shao

In each hypergraph, different temporal granularities are captured by hyperedges that connect a set of graph nodes (i. e., part-based features) across different temporal ranges.

Video-Based Person Re-Identification

Learning Multi-Attention Context Graph for Group-Based Re-Identification

1 code implementation29 Apr 2021 Yichao Yan, Jie Qin, Bingbing Ni, Jiaxin Chen, Li Liu, Fan Zhu, Wei-Shi Zheng, Xiaokang Yang, Ling Shao

Extensive experiments on the novel dataset as well as three existing datasets clearly demonstrate the effectiveness of the proposed framework for both group-based re-id tasks.

Person Re-Identification

A Closer Look at the Training Strategy for Modern Meta-Learning

1 code implementation NeurIPS 2020 Jiaxin Chen, Xiao-Ming Wu, Yanke Li, Qimai Li, Li-Ming Zhan, Fu-Lai Chung

The support/query (S/Q) episodic training strategy has been widely used in modern meta-learning algorithms and is believed to improve their generalization ability to test environments.

Few-Shot Learning

Deep Adversarial Domain Adaptation Based on Multi-layer Joint Kernelized Distance

no code implementations9 Oct 2020 Sitong Mao, Jiaxin Chen, Xiao Shen, Fu-Lai Chung

In this paper, a deep adversarial domain adaptation model based on a multi-layer joint kernelized distance metric is proposed.

Domain Adaptation

Adaptive Energy Management for Real Driving Conditions via Transfer Reinforcement Learning

no code implementations24 Jul 2020 Teng Liu, Wenhao Tan, Xiaolin Tang, Jiaxin Chen, Dongpu Cao

This article proposes a transfer reinforcement learning (RL) based adaptive energy managing approach for a hybrid electric vehicle (HEV) with parallel topology.

energy management Management +3

Transferred Energy Management Strategies for Hybrid Electric Vehicles Based on Driving Conditions Recognition

no code implementations16 Jul 2020 Teng Liu, Xiaolin Tang, Jiaxin Chen, Hong Wang, Wenhao Tan, Yalian Yang

Energy management strategies (EMSs) are the most significant components in hybrid electric vehicles (HEVs) because they decide the potential of energy conservation and emission reduction.

Computational Efficiency energy management +3

Auto-Encoding Twin-Bottleneck Hashing

2 code implementations CVPR 2020 Yuming Shen, Jie Qin, Jiaxin Chen, Mengyang Yu, Li Liu, Fan Zhu, Fumin Shen, Ling Shao

One bottleneck (i. e., binary codes) conveys the high-level intrinsic data structure captured by the code-driven graph to the other (i. e., continuous variables for low-level detail information), which in turn propagates the updated network feedback for the encoder to learn more discriminative binary codes.

graph construction Retrieval

Variational Metric Scaling for Metric-Based Meta-Learning

1 code implementation26 Dec 2019 Jiaxin Chen, Li-Ming Zhan, Xiao-Ming Wu, Fu-Lai Chung

In this paper, we recast metric-based meta-learning from a Bayesian perspective and develop a variational metric scaling framework for learning a proper metric scaling parameter.

Few-Shot Learning Variational Inference

Embarrassingly Simple Binary Representation Learning

1 code implementation26 Aug 2019 Yuming Shen, Jie Qin, Jiaxin Chen, Li Liu, Fan Zhu

Recent binary representation learning models usually require sophisticated binary optimization, similarity measure or even generative models as auxiliaries.

Representation Learning

Deep Sketch-Shape Hashing With Segmented 3D Stochastic Viewing

no code implementations CVPR 2019 Jiaxin Chen, Jie Qin, Li Liu, Fan Zhu, Fumin Shen, Jin Xie, Ling Shao

Sketch-based 3D shape retrieval has been extensively studied in recent works, most of which focus on improving the retrieval accuracy, whilst neglecting the efficiency.

3D Shape Classification 3D Shape Representation +2

Deep Cross-modality Adaptation via Semantics Preserving Adversarial Learning for Sketch-based 3D Shape Retrieval

no code implementations ECCV 2018 Jiaxin Chen, Yi Fang

Due to the large cross-modality discrepancy between 2D sketches and 3D shapes, retrieving 3D shapes by sketches is a significantly challenging task.

3D Shape Classification 3D Shape Retrieval +2

Scale Optimization for Full-Image-CNN Vehicle Detection

no code implementations20 Feb 2018 Yang Gao, Shouyan Guo, Kaimin Huang, Jiaxin Chen, Qian Gong, Yang Zou, Tong Bai, Gary Overett

By selecting better scales in the region proposal input and by combining feature maps through careful design of the convolutional neural network, we improve performance on smaller objects.

Object object-detection +2

Fast Person Re-Identification via Cross-Camera Semantic Binary Transformation

no code implementations CVPR 2017 Jiaxin Chen, Yunhong Wang, Jie Qin, Li Liu, Ling Shao

Numerous methods have been proposed for person re-identification, most of which however neglect the matching efficiency.

Person Re-Identification

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