Search Results for author: Daoqiang Zhang

Found 46 papers, 2 papers with code

Learning Task-Specific Sampling Strategy for Sparse-View CT Reconstruction

no code implementations3 Sep 2024 Liutao Yang, Jiahao Huang, Yingying Fang, Angelica I Aviles-Rivero, Carola-Bibiane Schonlieb, Daoqiang Zhang, Guang Yang

Thus, a task-specific sampling strategy can be applied for each type of scans to improve the quality of SVCT imaging and further assist in performance of downstream clinical usage.

CT Reconstruction

CT-SDM: A Sampling Diffusion Model for Sparse-View CT Reconstruction across All Sampling Rates

no code implementations3 Sep 2024 Liutao Yang, Jiahao Huang, Guang Yang, Daoqiang Zhang

Because of the reduced number of projection views, traditional reconstruction methods can lead to severe artifacts.

CT Reconstruction

Say No to Freeloader: Protecting Intellectual Property of Your Deep Model

no code implementations23 Aug 2024 Lianyu Wang, Meng Wang, Huazhu Fu, Daoqiang Zhang

Based on the proposed whole method, the novel style and discriminative loss functions are designed to effectively enhance the distinction in style and discriminative features between authorized and unauthorized domains, respectively.

Spatially Resolved Gene Expression Prediction from Histology via Multi-view Graph Contrastive Learning with HSIC-bottleneck Regularization

no code implementations18 Jun 2024 Changxi Chi, Hang Shi, Qi Zhu, Daoqiang Zhang, Wei Shao

The rapid development of spatial transcriptomics(ST) enables the measurement of gene expression at spatial resolution, making it possible to simultaneously profile the gene expression, spatial locations of spots, and the matched histopathological images.

Contrastive Learning

Tumor Micro-environment Interactions Guided Graph Learning for Survival Analysis of Human Cancers from Whole-slide Pathological Images

no code implementations CVPR 2024 Wei Shao, Yangyang Shi, Daoqiang Zhang, Junjie Zhou, Peng Wan

However most of the prevalent methods only worked on the sampled patches in specifically or randomly selected tumor areas of WSIs which has very limited capability to capture the complex interactions between tumor and its surrounding micro-environment components.

Graph Attention Graph Embedding +3

Model Barrier: A Compact Un-Transferable Isolation Domain for Model Intellectual Property Protection

1 code implementation CVPR 2023 Lianyu Wang, Meng Wang, Daoqiang Zhang, Huazhu Fu

As scientific and technological advancements result from human intellectual labor and computational costs, protecting model intellectual property (IP) has become increasingly important to encourage model creators and owners.

sMRI-PatchNet: A novel explainable patch-based deep learning network for Alzheimer's disease diagnosis and discriminative atrophy localisation with Structural MRI

no code implementations17 Feb 2023 Xin Zhang, Liangxiu Han, Lianghao Han, Haoming Chen, Darren Dancey, Daoqiang Zhang

Specifically, it consists of two primary components: 1) A fast and efficient explainable patch selection mechanism for determining the most discriminative patches based on computing the SHapley Additive exPlanations (SHAP) contribution to a transfer learning model for AD diagnosis on massive medical data; and 2) A novel patch-based network for extracting deep features and AD classfication from the selected patches with position embeddings to retain position information, capable of capturing the global and local information of inter- and intra-patches.

Position Transfer Learning

Complementary Labels Learning with Augmented Classes

no code implementations19 Nov 2022 Zhongnian Li, Jian Zhang, Mengting Xu, Xinzheng Xu, Daoqiang Zhang

In this paper, we propose a novel problem setting called Complementary Labels Learning with Augmented Classes (CLLAC), which brings the challenge that classifiers trained by complementary labels should not only be able to classify the instances from observed classes accurately, but also recognize the instance from the Augmented Classes in the testing phase.

Unsupervised Domain Adaptation via Style-Aware Self-intermediate Domain

no code implementations5 Sep 2022 Lianyu Wang, Meng Wang, Daoqiang Zhang, Huazhu Fu

Specifically, we propose a novel learning strategy of SSID, which selects samples from both source and target domains as anchors, and then randomly fuses the object and style features of these anchors to generate labeled and style-rich intermediate auxiliary features for knowledge transfer.

Transfer Learning Unsupervised Domain Adaptation

Learning from Positive and Unlabeled Data with Augmented Classes

no code implementations27 Jul 2022 Zhongnian Li, Liutao Yang, Zhongchen Ma, Tongfeng Sun, Xinzheng Xu, Daoqiang Zhang

In this paper, we propose an unbiased risk estimator for PU learning with Augmented Classes (PUAC) by utilizing unlabeled data from the augmented classes distribution, which can be easily collected in many real-world scenarios.

Layer-Wise Partitioning and Merging for Efficient and Scalable Deep Learning

no code implementations22 Jul 2022 Samson B. Akintoye, Liangxiu Han, Huw Lloyd, Xin Zhang, Darren Dancey, Haoming Chen, Daoqiang Zhang

Deep Neural Network (DNN) models are usually trained sequentially from one layer to another, which causes forward, backward and update locking's problems, leading to poor performance in terms of training time.

InfoAT: Improving Adversarial Training Using the Information Bottleneck Principle

no code implementations23 Jun 2022 Mengting Xu, Tao Zhang, Zhongnian Li, Daoqiang Zhang

Therefore, guaranteeing the robustness of hard examples is crucial for improving the final robustness of the model.

Low-Dose CT Denoising via Sinogram Inner-Structure Transformer

no code implementations7 Apr 2022 Liutao Yang, Zhongnian Li, Rongjun Ge, Junyong Zhao, Haipeng Si, Daoqiang Zhang

Furthermore, in order to improve the performance in the image domain, we propose the image reconstruction module to complementarily denoise both in the sinogram and image domain.

Denoising Image Reconstruction

Scale-Invariant Adversarial Attack for Evaluating and Enhancing Adversarial Defenses

no code implementations29 Jan 2022 Mengting Xu, Tao Zhang, Zhongnian Li, Daoqiang Zhang

Further, we propose Scale-Invariant (SI) adversarial defense mechanism based on the cosine angle matrix, which can be embedded into the popular adversarial defenses.

Adversarial Attack Adversarial Defense

MedRDF: A Robust and Retrain-Less Diagnostic Framework for Medical Pretrained Models Against Adversarial Attack

no code implementations29 Nov 2021 Mengting Xu, Tao Zhang, Daoqiang Zhang

However, the defense methods that have good effect in natural images may not be suitable for medical diagnostic tasks.

Adversarial Attack

Towards Evaluating the Robustness of Deep Diagnostic Models by Adversarial Attack

1 code implementation5 Mar 2021 Mengting Xu, Tao Zhang, Zhongnian Li, Mingxia Liu, Daoqiang Zhang

Deep learning models (with neural networks) have been widely used in challenging tasks such as computer-aided disease diagnosis based on medical images.

Adversarial Attack Multi-Label Classification

Improving the Certified Robustness of Neural Networks via Consistency Regularization

no code implementations24 Dec 2020 Mengting Xu, Tao Zhang, Zhongnian Li, Daoqiang Zhang

A range of defense methods have been proposed to improve the robustness of neural networks on adversarial examples, among which provable defense methods have been demonstrated to be effective to train neural networks that are certifiably robust to the attacker.

Transport based Graph Kernels

no code implementations2 Nov 2020 Kai Ma, Peng Wan, Daoqiang Zhang

In order to effectively utilize graph hierarchical structure information, we propose pyramid graph kernel based on optimal transport (OT).

Shared Space Transfer Learning for analyzing multi-site fMRI data

no code implementations NeurIPS 2020 Muhammad Yousefnezhad, Alessandro Selvitella, Daoqiang Zhang, Andrew J. Greenshaw, Russell Greiner

The optimization procedure extracts the common features for each site by using a single-iteration algorithm and maps these site-specific common features to the site-independent shared space.

Art Analysis Transfer Learning

ASMFS: Adaptive-Similarity-based Multi-modality Feature Selection for Classification of Alzheimer's Disease

no code implementations16 Oct 2020 Yuang Shi, Chen Zu, Mei Hong, Luping Zhou, Lei Wang, Xi Wu, Jiliu Zhou, Daoqiang Zhang, Yan Wang

With the increasing amounts of high-dimensional heterogeneous data to be processed, multi-modality feature selection has become an important research direction in medical image analysis.

feature selection General Classification

Deep Representational Similarity Learning for analyzing neural signatures in task-based fMRI dataset

no code implementations28 Sep 2020 Muhammad Yousefnezhad, Jeffrey Sawalha, Alessandro Selvitella, Daoqiang Zhang

This paper develops Deep Representational Similarity Learning (DRSL), a deep extension of RSA that is appropriate for analyzing similarities between various cognitive tasks in fMRI datasets with a large number of subjects, and high-dimensionality -- such as whole-brain images.

Decision Making

Ordinal Pattern Kernel for Brain Connectivity Network Classification

no code implementations18 Aug 2020 Kai Ma, Biao Jie, Daoqiang Zhang

Kernel-based method, such as graph kernel (i. e., kernel defined on graphs), has been proposed for measuring the similarity of brain networks, and yields the promising classification performance.

Classification General Classification

An Explainable 3D Residual Self-Attention Deep Neural Network FOR Joint Atrophy Localization and Alzheimer's Disease Diagnosis using Structural MRI

no code implementations10 Aug 2020 Xin Zhang, Liangxiu Han, Wenyong Zhu, Liang Sun, Daoqiang Zhang

Different from the existing approaches, the novelty of our approach is three-fold: 1) A Residual Self-Attention Deep Neural Network has been proposed to capture local, global and spatial information of MR images to improve diagnostic performance; 2) An explanation method using Gradient-based Localization Class Activation mapping (Grad-CAM) has been introduced to improve the explainable of the proposed method; 3) This work has provided a full end-to-end learning solution for automated disease diagnosis.

Hippocampus

A Survey on Deep Learning for Neuroimaging-based Brain Disorder Analysis

no code implementations10 May 2020 Li Zhang, Mingliang Wang, Mingxia Liu, Daoqiang Zhang

Deep learning has been recently used for the analysis of neuroimages, such as structural magnetic resonance imaging (MRI), functional MRI, and positron emission tomography (PET), and has achieved significant performance improvements over traditional machine learning in computer-aided diagnosis of brain disorders.

Geometric Interpretation of Running Nyström-Based Kernel Machines and Error Analysis

no code implementations20 Feb 2020 Weida Li, Mingxia Liu, Daoqiang Zhang

These analytical results lead to the conjecture that the naive approach can provide more accurate approximate solutions than the other two sophisticated approaches.

General Classification Philosophy

Supervised Hyperalignment for multi-subject fMRI data alignment

no code implementations9 Jan 2020 Muhammad Yousefnezhad, Alessandro Selvitella, Liangxiu Han, Daoqiang Zhang

This paper proposes a Supervised Hyperalignment (SHA) method to ensure better functional alignment for MVP analysis, where the proposed method provides a supervised shared space that can maximize the correlation among the stimuli belonging to the same category and minimize the correlation between distinct categories of stimuli.

Multi-Subject Fmri Data Alignment Time Series +1

Graph-Based Decoding Model for Functional Alignment of Unaligned fMRI Data

no code implementations14 May 2019 Weida Li, Mingxia Liu, Fang Chen, Daoqiang Zhang

Aggregating multi-subject functional magnetic resonance imaging (fMRI) data is indispensable for generating valid and general inferences from patterns distributed across human brains.

valid

SEGAN: Structure-Enhanced Generative Adversarial Network for Compressed Sensing MRI Reconstruction

no code implementations18 Feb 2019 Zhongnian Li, Tao Zhang, Peng Wan, Daoqiang Zhang

Generative Adversarial Networks (GANs) are powerful tools for reconstructing Compressed Sensing Magnetic Resonance Imaging (CS-MRI).

Generative Adversarial Network MRI Reconstruction

Gradient-based Representational Similarity Analysis with Searchlight for Analyzing fMRI Data

no code implementations12 Sep 2018 Xiaoliang Sheng, Muhammad Yousefnezhad, Tonglin Xu, Ning Yuan, Daoqiang Zhang

Classical RSA techniques employ the inverse of the covariance matrix to explore a linear model between the neural activities and task events.

Multi-Objective Cognitive Model: a supervised approach for multi-subject fMRI analysis

no code implementations5 Aug 2018 Muhammad Yousefnezhad, Daoqiang Zhang

As a standard pipeline in the MVP analysis, brain patterns in multi-subject fMRI dataset must be mapped to a shared space and then a classification model is generated by employing the mapped patterns.

General Classification

Gradient Hyperalignment for multi-subject fMRI data alignment

no code implementations7 Jul 2018 Tonglin Xu, Muhammad Yousefnezhad, Daoqiang Zhang

Multi-subject fMRI data analysis is an interesting and challenging problem in human brain decoding studies.

Brain Decoding General Classification +1

Deep Hyperalignment

no code implementations NeurIPS 2017 Muhammad Yousefnezhad, Daoqiang Zhang

This paper proposes Deep Hyperalignment (DHA) as a regularized, deep extension, scalable Hyperalignment (HA) method, which is well-suited for applying functional alignment to fMRI datasets with nonlinearity, high-dimensionality (broad ROI), and a large number of subjects.

Anatomical Pattern Analysis for decoding visual stimuli in human brains

no code implementations5 Oct 2017 Muhammad Yousefnezhad, Daoqiang Zhang

Methods: In overcoming mentioned challenges, this paper proposes Anatomical Pattern Analysis (APA) for decoding visual stimuli in the human brain.

Binary Classification General Classification

Multi-Region Neural Representation: A novel model for decoding visual stimuli in human brains

no code implementations26 Dec 2016 Muhammad Yousefnezhad, Daoqiang Zhang

There is a wide range of challenges in the MVP techniques, i. e. decreasing noise and sparsity, defining effective regions of interest (ROIs), visualizing results, and the cost of brain studies.

Time Series Time Series Analysis

WoCE: a framework for clustering ensemble by exploiting the wisdom of Crowds theory

no code implementations20 Dec 2016 Muhammad Yousefnezhad, Sheng-Jun Huang, Daoqiang Zhang

We employ four conditions in the WOC theory, i. e., diversity, independency, decentralization and aggregation, to guide both the constructing of individual clustering results and the final combination for clustering ensemble.

Clustering Clustering Ensemble +1

Local Discriminant Hyperalignment for multi-subject fMRI data alignment

no code implementations25 Nov 2016 Muhammad Yousefnezhad, Daoqiang Zhang

Multivariate Pattern (MVP) classification can map different cognitive states to the brain tasks.

Multi-Subject Fmri Data Alignment

A new selection strategy for selective cluster ensemble based on Diversity and Independency

no code implementations9 Oct 2016 Muhammad Yousefnezhad, Ali Reihanian, Daoqiang Zhang, Behrouz Minaei-Bidgoli

In recent years, Diversity and Quality, which are two metrics in evaluation procedure, have been used for selecting basic clustering results in the cluster ensemble selection.

Clustering Diversity +1

Decoding visual stimuli in human brain by using Anatomical Pattern Analysis on fMRI images

no code implementations4 Sep 2016 Muhammad Yousefnezhad, Daoqiang Zhang

In overcoming mentioned challenges, this paper proposes Anatomical Pattern Analysis (APA) for decoding visual stimuli in the human brain.

Binary Classification General Classification

Weighted Spectral Cluster Ensemble

no code implementations25 Apr 2016 Muhammad Yousefnezhad, Daoqiang Zhang

Cluster Ensemble Selection (CES) is a new approach, which can combine individual clustering results for increasing the performance of the final results.

Clustering Community Detection +1

Prostate Segmentation in CT Images via Spatial-Constrained Transductive Lasso

no code implementations CVPR 2013 Yinghuan Shi, Shu Liao, Yaozong Gao, Daoqiang Zhang, Yang Gao, Dinggang Shen

Specifically, to segment the prostate in the current treatment image, the physician first takes a few seconds to manually specify the first and last slices of the prostate in the image space.

Segmentation

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