Search Results for author: Shanshan Wang

Found 83 papers, 24 papers with code

Optimized Vessel Segmentation: A Structure-Agnostic Approach with Small Vessel Enhancement and Morphological Correction

1 code implementation22 Nov 2024 Dongning Song, Weijian Huang, Jiarun Liu, Md Jahidul Islam, Hao Yang, Shanshan Wang

General-purpose segmentation models introduced in medical imaging often fail to address critical vascular characteristics, including the connectivity of segmentation results.

Segmentation

SamRobNODDI: Q-Space Sampling-Augmented Continuous Representation Learning for Robust and Generalized NODDI

no code implementations10 Nov 2024 Taohui Xiao, Jian Cheng, Wenxin Fan, Enqing Dong, Hairong Zheng, Shanshan Wang

Neurite Orientation Dispersion and Density Imaging (NODDI) microstructure estimation from diffusion magnetic resonance imaging (dMRI) is of great significance for the discovery and treatment of various neurological diseases.

Representation Learning

H2OVL-Mississippi Vision Language Models Technical Report

no code implementations17 Oct 2024 Shaikat Galib, Shanshan Wang, Guanshuo Xu, Pascal Pfeiffer, Ryan Chesler, Mark Landry, Sri Satish Ambati

Smaller vision-language models (VLMs) are becoming increasingly important for privacy-focused, on-device applications due to their ability to run efficiently on consumer hardware for processing enterprise commercial documents and images.

Document AI Visual Question Answering

MGSA: Multi-Granularity Graph Structure Attention for Knowledge Graph-to-Text Generation

no code implementations16 Sep 2024 Shanshan Wang, Chun Zhang, Ning Zhang

The Knowledge Graph-to-Text Generation task aims to convert structured knowledge graphs into coherent and human-readable natural language text.

KG-to-Text Generation Knowledge Graphs +1

Dual-stream Feature Augmentation for Domain Generalization

1 code implementation7 Sep 2024 Shanshan Wang, ALuSi, Xun Yang, Ke Xu, Huibin Tan, Xingyi Zhang

On the other hand, the causality in discriminative features is not involved in these methods, which harms the generalization ability of model due to the spurious correlations.

Contrastive Learning Domain Generalization

RobNODDI: Robust NODDI Parameter Estimation with Adaptive Sampling under Continuous Representation

no code implementations4 Aug 2024 Taohui Xiao, Jian Cheng, Wenxin Fan, Jing Yang, Cheng Li, Enqing Dong, Shanshan Wang

In this work, we verify for the first time that the parameter estimation performance of current mainstream methods will significantly decrease when the testing diffusion directions and the training diffusion directions are inconsistent.

Deep Learning

What is the Best Way for ChatGPT to Translate Poetry?

no code implementations5 Jun 2024 Shanshan Wang, Derek F. Wong, Jingming Yao, Lidia S. Chao

Machine translation (MT) has historically faced significant challenges when applied to literary works, particularly in the domain of poetry translation.

Machine Translation Translation

Dual-State Personalized Knowledge Tracing with Emotional Incorporation

no code implementations27 May 2024 Shanshan Wang, Fangzheng Yuan, Keyang Wang, Xun Yang, Xingyi Zhang, Meng Wang

To alleviate this limitation, we explicitly models the personalized learning process by incorporating the emotions, a representative personalized behavior in the learning process, into KT framework.

Knowledge Tracing Transfer Learning

DeepMpMRI: Tensor-decomposition Regularized Learning for Fast and High-Fidelity Multi-Parametric Microstructural MR Imaging

no code implementations6 May 2024 Wenxin Fan, Jian Cheng, Cheng Li, Xinrui Ma, Jing Yang, Juan Zou, Ruoyou Wu, Zan Chen, Yuanjing Feng, Hairong Zheng, Shanshan Wang

Deep learning has emerged as a promising approach for learning the nonlinear mapping between diffusion-weighted MR images and tissue parameters, which enables automatic and deep understanding of the brain microstructures.

Tensor Decomposition

Personalized Forgetting Mechanism with Concept-Driven Knowledge Tracing

no code implementations18 Apr 2024 Shanshan Wang, Ying Hu, Xun Yang, Zhongzhou Zhang, Keyang Wang, Xingyi Zhang

To address these problems, we propose a Concept-driven Personalized Forgetting knowledge tracing model (CPF) which integrates hierarchical relationships between knowledge concepts and incorporates students' personalized cognitive abilities.

Knowledge Tracing

CSR-dMRI: Continuous Super-Resolution of Diffusion MRI with Anatomical Structure-assisted Implicit Neural Representation Learning

no code implementations4 Apr 2024 Ruoyou Wu, Jian Cheng, Cheng Li, Juan Zou, Jing Yang, Wenxin Fan, Yong Liang, Shanshan Wang

The first is the latent feature extractor, which primarily extracts latent space feature maps from LR dMRI and anatomical images while learning structural prior information from the anatomical images.

Representation Learning Super-Resolution

Automating Vessel Segmentation in the Heart and Brain: A Trend to Develop Multi-Modality and Label-Efficient Deep Learning Techniques

no code implementations2 Apr 2024 Nazik Elsayed, Yousuf Babiker M. Osman, Cheng Li, Jiong Zhang, Shanshan Wang

Cardio-cerebrovascular diseases are the leading causes of mortality worldwide, whose accurate blood vessel segmentation is significant for both scientific research and clinical usage.

Deep Learning Segmentation +1

Enhancing Out-of-Distribution Detection with Multitesting-based Layer-wise Feature Fusion

no code implementations16 Mar 2024 Jiawei Li, Sitong Li, Shanshan Wang, Yicheng Zeng, Falong Tan, Chuanlong Xie

When trained using KNN on CIFAR10, MLOD-Fisher significantly lowers the false positive rate (FPR) from 24. 09% to 7. 47% on average compared to merely utilizing the features of the last layer.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

Positive and negative sampling strategies for self-supervised learning on audio-video data

1 code implementation5 Feb 2024 Shanshan Wang, Soumya Tripathy, Toni Heittola, Annamaria Mesaros

In Self-Supervised Learning (SSL), Audio-Visual Correspondence (AVC) is a popular task to learn deep audio and video features from large unlabeled datasets.

Self-Supervised Learning

Knowledge-driven deep learning for fast MR imaging: undersampled MR image reconstruction from supervised to un-supervised learning

no code implementations5 Feb 2024 Shanshan Wang, Ruoyou Wu, Sen Jia, Alou Diakite, Cheng Li, Qiegen Liu, Leslie Ying

The traits and trends of these techniques have also been given which have shifted from supervised learning to semi-supervised learning, and finally, to unsupervised learning methods.

Image Reconstruction Image Restoration

Swin-UMamba: Mamba-based UNet with ImageNet-based pretraining

1 code implementation5 Feb 2024 Jiarun Liu, Hao Yang, Hong-Yu Zhou, Yan Xi, Lequan Yu, Yizhou Yu, Yong Liang, Guangming Shi, Shaoting Zhang, Hairong Zheng, Shanshan Wang

However, it is challenging for existing methods to model long-range global information, where convolutional neural networks (CNNs) are constrained by their local receptive fields, and vision transformers (ViTs) suffer from high quadratic complexity of their attention mechanism.

Image Segmentation Mamba +3

Enhancing the vision-language foundation model with key semantic knowledge-emphasized report refinement

no code implementations21 Jan 2024 Weijian Huang, Cheng Li, Hao Yang, Jiarun Liu, Yong Liang, Hairong Zheng, Shanshan Wang

Particularly, raw radiology reports are refined to highlight the key information according to a constructed clinical dictionary and two model-optimized knowledge-enhancement metrics.

Medical Image Analysis Phrase Grounding +1

Multi-modal vision-language model for generalizable annotation-free pathology localization and clinical diagnosis

1 code implementation4 Jan 2024 Hao Yang, Hong-Yu Zhou, Zhihuan Li, Yuanxu Gao, Cheng Li, Weijian Huang, Jiarun Liu, Hairong Zheng, Kang Zhang, Shanshan Wang

The core strength of AFLoc lies in its extensive multi-level semantic structure-based contrastive learning, which comprehensively aligns multi-granularity medical concepts from reports with abundant image features, to adapt to the diverse expressions of pathologies and unseen pathologies without the reliance on image annotations from experts.

Contrastive Learning Language Modelling

Enhancing Representation in Medical Vision-Language Foundation Models via Multi-Scale Information Extraction Techniques

no code implementations3 Jan 2024 Weijian Huang, Cheng Li, Hong-Yu Zhou, Jiarun Liu, Hao Yang, Yong Liang, Guangming Shi, Hairong Zheng, Shanshan Wang

The development of medical vision-language foundation models has attracted significant attention in the field of medicine and healthcare due to their promising prospect in various clinical applications.

Representation Learning

Multimodal self-supervised learning for lesion localization

no code implementations3 Jan 2024 Hao Yang, Hong-Yu Zhou, Cheng Li, Weijian Huang, Jiarun Liu, Yong Liang, Guangming Shi, Hairong Zheng, Qiegen Liu, Shanshan Wang

Multimodal deep learning utilizing imaging and diagnostic reports has made impressive progress in the field of medical imaging diagnostics, demonstrating a particularly strong capability for auxiliary diagnosis in cases where sufficient annotation information is lacking.

Contrastive Learning Multimodal Deep Learning +1

Modality Exchange Network for Retinogeniculate Visual Pathway Segmentation

no code implementations3 Jan 2024 Hua Han, Cheng Li, Lei Xie, Yuanjing Feng, Alou Diakite, Shanshan Wang

Secondly, we propose a cross-fusion module that further enhances the fusion of information between the two modalities.

Segmentation

LESEN: Label-Efficient deep learning for Multi-parametric MRI-based Visual Pathway Segmentation

no code implementations3 Jan 2024 Alou Diakite, Cheng Li, Lei Xie, Yuanjing Feng, Hua Han, Shanshan Wang

Recent research has shown the potential of deep learning in multi-parametric MRI-based visual pathway (VP) segmentation.

Deep Learning Segmentation

Simultaneous q-Space Sampling Optimization and Reconstruction for Fast and High-fidelity Diffusion Magnetic Resonance Imaging

no code implementations3 Jan 2024 Jing Yang, Jian Cheng, Cheng Li, Wenxin Fan, Juan Zou, Ruoyou Wu, Shanshan Wang

Diffusion Magnetic Resonance Imaging (dMRI) plays a crucial role in the noninvasive investigation of tissue microstructural properties and structural connectivity in the \textit{in vivo} human brain.

Backstepping Neural Operators for $2\times 2$ Hyperbolic PDEs

no code implementations28 Dec 2023 Shanshan Wang, Mamadou Diagne, Miroslav Krstić

In this paper, we explore the subject of approximating systems of gain kernel PDEs for hyperbolic PDE plants by considering a simple counter-convecting $2\times 2$ coupled system in whose control a $2\times 2$ kernel PDE system in Goursat form arises.

Partition-based K-space Synthesis for Multi-contrast Parallel Imaging

no code implementations1 Dec 2023 Yuxia Huang, Zhonghui Wu, Xiaoling Xu, Minghui Zhang, Shanshan Wang, Qiegen Liu

After that, the two new objects as the whole data to realize the reconstruction of T2-weighted image.

Particle density and critical point for studying site percolation by finite size scaling

no code implementations20 Nov 2023 Dian Xu, Shanshan Wang, Feng Gao, Wei Li, Jianmin Shen

It is generally believed that the latent variables of unsupervised learning can capture the information related to phase transitions, which is usually achieved through the so-called order parameter.

Enhancing Representation in Radiography-Reports Foundation Model: A Granular Alignment Algorithm Using Masked Contrastive Learning

1 code implementation12 Sep 2023 Weijian Huang, Cheng Li, Hong-Yu Zhou, Hao Yang, Jiarun Liu, Yong Liang, Hairong Zheng, Shaoting Zhang, Shanshan Wang

It designs a correlation weighting mechanism to adjust the correlation between masked chest X-ray image patches and their corresponding reports, thereby enhancing the model's representation learning capabilities.

Contrastive Learning Medical Image Analysis +3

Generalizable Learning Reconstruction for Accelerating MR Imaging via Federated Neural Architecture Search

1 code implementation27 Aug 2023 Ruoyou Wu, Cheng Li, Juan Zou, Shanshan Wang

Heterogeneous data captured by different scanning devices and imaging protocols can affect the generalization performance of the deep learning magnetic resonance (MR) reconstruction model.

Efficient Neural Network Fairness +4

Efficient Learned Lossless JPEG Recompression

no code implementations25 Aug 2023 Lina Guo, Yuanyuan Wang, Tongda Xu, Jixiang Luo, Dailan He, Zhenjun Ji, Shanshan Wang, Yang Wang, Hongwei Qin

Second, we propose pipeline parallel context model (PPCM) and compressed checkerboard context model (CCCM) for the effective conditional modeling and efficient decoding within luma and chroma components.

Image Compression Quantization

Deep Learning of Delay-Compensated Backstepping for Reaction-Diffusion PDEs

no code implementations21 Aug 2023 Shanshan Wang, Mamadou Diagne, Miroslav Krstić

Multiple operators arise in the control of PDE systems from distinct PDE classes, such as the system in this paper: a reaction-diffusion plant, which is a parabolic PDE, with input delay, which is a hyperbolic PDE.

Deep Learning

FedAutoMRI: Federated Neural Architecture Search for MR Image Reconstruction

no code implementations21 Jul 2023 Ruoyou Wu, Cheng Li, Juan Zou, Shanshan Wang

Centralized training methods have shown promising results in MR image reconstruction, but privacy concerns arise when gathering data from multiple institutions.

Federated Learning Image Reconstruction +1

Self-Supervised Federated Learning for Fast MR Imaging

no code implementations10 May 2023 Juan Zou, Cheng Li, Ruoyou Wu, Tingrui Pei, Hairong Zheng, Shanshan Wang

SSFedMRI explores the physics-based contrastive reconstruction networks in each client to realize cross-site collaborative training in the absence of fully sampled data.

Federated Learning Image Reconstruction

Model-based Federated Learning for Accurate MR Image Reconstruction from Undersampled k-space Data

1 code implementation15 Apr 2023 Ruoyou Wu, Cheng Li, Juan Zou, Qiegen Liu, Hairong Zheng, Shanshan Wang

However, high heterogeneity exists in the data from different centers, and existing federated learning methods tend to use average aggregation methods to combine the client's information, which limits the performance and generalization capability of the trained models.

Federated Learning Image Reconstruction

Few-shot Class-incremental Learning for Cross-domain Disease Classification

no code implementations12 Apr 2023 Hao Yang, Weijian Huang, Jiarun Liu, Cheng Li, Shanshan Wang

The ability to incrementally learn new classes from limited samples is crucial to the development of artificial intelligence systems for real clinical application.

class-incremental learning Cross-Domain Few-Shot +3

MGA: Medical generalist agent through text-guided knowledge transformation

no code implementations15 Mar 2023 Weijian Huang, Hao Yang, Cheng Li, Mingtong Dai, Rui Yang, Shanshan Wang

To this end, we propose a novel medical generalist agent, MGA, that can address three kinds of common clinical tasks via clinical reports knowledge transformation.

Clinical Knowledge Inductive Bias

Meta Architecture for Point Cloud Analysis

1 code implementation CVPR 2023 Haojia Lin, Xiawu Zheng, Lijiang Li, Fei Chao, Shanshan Wang, Yan Wang, Yonghong Tian, Rongrong Ji

However, the lack of a unified framework to interpret those networks makes any systematic comparison, contrast, or analysis challenging, and practically limits healthy development of the field.

3D Semantic Segmentation

Iterative Data Refinement for Self-Supervised MR Image Reconstruction

no code implementations24 Nov 2022 Xue Liu, Juan Zou, Xiawu Zheng, Cheng Li, Hairong Zheng, Shanshan Wang

Then, we design an effective self-supervised training data refinement method to reduce this data bias.

Image Reconstruction

Adaptive PromptNet For Auxiliary Glioma Diagnosis without Contrast-Enhanced MRI

no code implementations15 Nov 2022 Yeqi Wang, Weijian Huang, Cheng Li, Xiawu Zheng, Yusong Lin, Shanshan Wang

Multi-contrast magnetic resonance imaging (MRI)-based automatic auxiliary glioma diagnosis plays an important role in the clinic.

DIGEST: Deeply supervIsed knowledGE tranSfer neTwork learning for brain tumor segmentation with incomplete multi-modal MRI scans

no code implementations15 Nov 2022 Haoran Li, Cheng Li, Weijian Huang, Xiawu Zheng, Yan Xi, Shanshan Wang

In this work, we propose a Deeply supervIsed knowledGE tranSfer neTwork (DIGEST), which achieves accurate brain tumor segmentation under different modality-missing scenarios.

Brain Tumor Segmentation Image Segmentation +3

Self-supervised learning of audio representations using angular contrastive loss

1 code implementation10 Nov 2022 Shanshan Wang, Soumya Tripathy, Annamaria Mesaros

To improve the discriminative ability of feature embeddings in SSL, we propose a new loss function called Angular Contrastive Loss (ACL), a linear combination of angular margin and contrastive loss.

Contrastive Learning Self-Supervised Learning

Self-supervised Graph Learning for Long-tailed Cognitive Diagnosis

no code implementations15 Oct 2022 Shanshan Wang, Zhen Zeng, Xun Yang, Xingyi Zhang

Cognitive diagnosis is a fundamental yet critical research task in the field of intelligent education, which aims to discover the proficiency level of different students on specific knowledge concepts.

cognitive diagnosis Graph Learning

One-shot Generative Prior in Hankel-k-space for Parallel Imaging Reconstruction

2 code implementations15 Aug 2022 Hong Peng, Chen Jiang, Jing Cheng, Minghui Zhang, Shanshan Wang, Dong Liang, Qiegen Liu

At the prior learning stage, we first construct a large Hankel matrix from k-space data, then extract multiple structured k-space patches from the large Hankel matrix to capture the internal distribution among different patches.

SelfCoLearn: Self-supervised collaborative learning for accelerating dynamic MR imaging

no code implementations8 Aug 2022 Juan Zou, Cheng Li, Sen Jia, Ruoyou Wu, Tingrui Pei, Hairong Zheng, Shanshan Wang

Lately, deep learning has been extensively investigated for accelerating dynamic magnetic resonance (MR) imaging, with encouraging progresses achieved.

Data Augmentation Image Reconstruction

WKGM: Weight-K-space Generative Model for Parallel Imaging Reconstruction

1 code implementation8 May 2022 Zongjiang Tu, Die Liu, Xiaoqing Wang, Chen Jiang, Pengwen Zhu, Minghui Zhang, Shanshan Wang, Dong Liang, Qiegen Liu

Deep learning based parallel imaging (PI) has made great progresses in recent years to accelerate magnetic resonance imaging (MRI).

Paying More Attention to Self-attention: Improving Pre-trained Language Models via Attention Guiding

no code implementations6 Apr 2022 Shanshan Wang, Zhumin Chen, Zhaochun Ren, Huasheng Liang, Qiang Yan, Pengjie Ren

In this work, we propose a simple yet effective attention guiding mechanism to improve the performance of PLM by encouraging attention towards the established goals.

Information Retrieval Retrieval

Multi-Weight Respecification of Scan-specific Learning for Parallel Imaging

1 code implementation5 Apr 2022 Hui Tao, Haifeng Wang, Shanshan Wang, Dong Liang, Xiaoling Xu, Qiegen Liu

Parallel imaging is widely used in magnetic resonance imaging as an acceleration technology.

K-space and Image Domain Collaborative Energy based Model for Parallel MRI Reconstruction

1 code implementation21 Mar 2022 Zongjiang Tu, Chen Jiang, Yu Guan, Shanshan Wang, Jijun Liu, Qiegen Liu, Dong Liang

Decreasing magnetic resonance (MR) image acquisition times can potentially make MR examinations more accessible.

MRI Reconstruction

Robust facial expression recognition with global‑local joint representation learning

no code implementations Multimedia Systems 2022 Chunxiao Fan, zhenxing Wang, Jia Li, Shanshan Wang, Xiao Sun

In the proposed method, (1) the topological structure information and texture feature of regions of interest (ROIs) are modeled as graphs and processed with graph convolutional network (GCN) to remain the topological features.

Facial Expression Recognition Facial Expression Recognition (FER) +1

BP-Triplet Net for Unsupervised Domain Adaptation: A Bayesian Perspective

no code implementations19 Feb 2022 Shanshan Wang, Lei Zhang, Pichao Wang

In our work, considering the different importance of pair-wise samples for both feature learning and domain alignment, we deduce our BP-Triplet loss for effective UDA from the perspective of Bayesian learning.

Metric Learning Triplet +1

Identifying subdominant collective effects in a large motorway network

no code implementations15 Feb 2022 Shanshan Wang, Michael Schreckenberg, Thomas Guhr

In a previous study, we focused on the collectivity motion present in the entire traffic network, i. e. the collectivity of the system as a whole.

Universal Generative Modeling for Calibration-free Parallel Mr Imaging

1 code implementation25 Jan 2022 Wanqing Zhu, Bing Guan, Shanshan Wang, Minghui Zhang, Qiegen Liu

The integration of compressed sensing and parallel imaging (CS-PI) provides a robust mechanism for accelerating MRI acquisitions.

Variable Augmented Network for Invertible MR Coil Compression

1 code implementation19 Jan 2022 Xianghao Liao, Shanshan Wang, Lanlan Tu, Yuhao Wang, Dong Liang, Qiegen Liu

Additionally, its performance is not susceptible to different number of virtual coils.

Expert Knowledge-guided Geometric Representation Learning for Magnetic Resonance Imaging-based Glioma Grading

no code implementations8 Jan 2022 Yeqi Wang, Longfei Li, Cheng Li, Yan Xi, Hairong Zheng, Yusong Lin, Shanshan Wang

Geometric manifolds of hand-crafted features and learned features are constructed to mine the implicit relationship between deep learning and radiomics, and therefore to dig mutual consent and essential representation for the glioma grades.

Deep Learning Lesion Segmentation +1

Radiomic biomarker extracted from PI-RADS 3 patients support more eìcient and robust prostate cancer diagnosis: a multi-center study

no code implementations23 Dec 2021 Longfei Li, Rui Yang, Xin Chen, Cheng Li, Hairong Zheng, Yusong Lin, Zaiyi Liu, Shanshan Wang

Prostate Imaging Reporting and Data System (PI-RADS) based on multi-parametric MRI classi\^ees patients into 5 categories (PI-RADS 1-5) for routine clinical diagnosis guidance.

Specificity-Preserving Federated Learning for MR Image Reconstruction

1 code implementation9 Dec 2021 Chun-Mei Feng, Yunlu Yan, Shanshan Wang, Yong Xu, Ling Shao, Huazhu Fu

The core idea is to divide the MR reconstruction model into two parts: a globally shared encoder to obtain a generalized representation at the global level, and a client-specific decoder to preserve the domain-specific properties of each client, which is important for collaborative reconstruction when the clients have unique distribution.

Federated Learning Image Reconstruction +1

Self-Supervised Learning for MRI Reconstruction with a Parallel Network Training Framework

1 code implementation26 Sep 2021 Chen Hu, Cheng Li, Haifeng Wang, Qiegen Liu, Hairong Zheng, Shanshan Wang

Specifically, during model optimization, two subsets are constructed by randomly selecting part of k-space data from the undersampled data and then fed into two parallel reconstruction networks to perform information recovery.

Model Optimization MRI Reconstruction +1

MRI Reconstruction Using Deep Energy-Based Model

1 code implementation7 Sep 2021 Yu Guan, Zongjiang Tu, Shanshan Wang, Qiegen Liu, Yuhao Wang, Dong Liang

In contrast to other generative models for reconstruction, the proposed method utilizes deep energy-based information as the image prior in reconstruction to improve the quality of image.

Image Generation MRI Reconstruction

Blind Image Quality Assessment for MRI with A Deep Three-dimensional content-adaptive Hyper-Network

no code implementations13 Jul 2021 Kehan Qi, Haoran Li, Chuyu Rong, Yu Gong, Cheng Li, Hairong Zheng, Shanshan Wang

However, the performance of these methods is limited due to the utilization of simple content-non-adaptive network parameters and the waste of the important 3D spatial information of the medical images.

Blind Image Quality Assessment

Few-Shot Electronic Health Record Coding through Graph Contrastive Learning

1 code implementation29 Jun 2021 Shanshan Wang, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Huasheng Liang, Qiang Yan, Evangelos Kanoulas, Maarten de Rijke

We seek to improve the performance for both frequent and rare ICD codes by using a contrastive graph-based EHR coding framework, CoGraph, which re-casts EHR coding as a few-shot learning task.

Contrastive Learning Few-Shot Learning

Deep neural network Based Low-latency Speech Separation with Asymmetric analysis-Synthesis Window Pair

no code implementations22 Jun 2021 Shanshan Wang, Gaurav Naithani, Archontis Politis, Tuomas Virtanen

Time-frequency masking or spectrum prediction computed via short symmetric windows are commonly used in low-latency deep neural network (DNN) based source separation.

Clustering Deep Clustering +2

Forecasting open-high-low-close data contained in candlestick chart

no code implementations31 Mar 2021 Huiwen Wang, Wenyang Huang, Shanshan Wang

Typically, the existence of the inherent constraints in OHLC data poses great challenge to its prediction, e. g., forecasting models may yield unrealistic values if these constraints are ignored.

Vocal Bursts Intensity Prediction

Dimension reduction of open-high-low-close data in candlestick chart based on pseudo-PCA

no code implementations31 Mar 2021 Wenyang Huang, Huiwen Wang, Shanshan Wang

The (open-high-low-close) OHLC data is the most common data form in the field of finance and the investigate object of various technical analysis.

Dimensionality Reduction

Robustifying Conditional Portfolio Decisions via Optimal Transport

1 code implementation30 Mar 2021 Viet Anh Nguyen, Fan Zhang, Shanshan Wang, Jose Blanchet, Erick Delage, Yinyu Ye

Despite the non-linearity of the objective function in the probability measure, we show that the distributionally robust portfolio allocation with side information problem can be reformulated as a finite-dimensional optimization problem.

Deep learning for fast MR imaging: a review for learning reconstruction from incomplete k-space data

no code implementations15 Dec 2020 Shanshan Wang, Taohui Xiao, Qiegen Liu, Hairong Zheng

Magnetic resonance imaging is a powerful imaging modality that can provide versatile information but it has a bottleneck problem "slow imaging speed".

Image Reconstruction

Multi-task MR Imaging with Iterative Teacher Forcing and Re-weighted Deep Learning

no code implementations27 Nov 2020 Kehan Qi, Yu Gong, Xinfeng Liu, Xin Liu, Hairong Zheng, Shanshan Wang

Noises, artifacts, and loss of information caused by the magnetic resonance (MR) reconstruction may compromise the final performance of the downstream applications.

Segmentation

Laplacian pyramid-based complex neural network learning for fast MR imaging

no code implementations MIDL 2019 Haoyun Liang, Yu Gong, Hoel Kervadec, Jing Yuan, Hairong Zheng, Shanshan Wang

A Laplacian pyramid-based complex neural network, CLP-Net, is proposed to reconstruct high-quality magnetic resonance images from undersampled k-space data.

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