Search Results for author: Qingyu Zhao

Found 24 papers, 15 papers with code

Enforcing Conditional Independence for Fair Representation Learning and Causal Image Generation

no code implementations21 Apr 2024 Jensen Hwa, Qingyu Zhao, Aditya Lahiri, Adnan Masood, Babak Salimi, Ehsan Adeli

We are able to enforce conditional independence of the diffusion autoencoder latent representation with respect to any protected attribute under the equalized odds constraint and show that this approach enables causal image generation with controllable latent spaces.

Attribute Fairness +2

Metadata-Conditioned Generative Models to Synthesize Anatomically-Plausible 3D Brain MRIs

no code implementations7 Oct 2023 Wei Peng, Tomas Bosschieter, Jiahong Ouyang, Robert Paul, Ehsan Adeli, Qingyu Zhao, Kilian M. Pohl

Generative AI models hold great potential in creating synthetic brain MRIs that advance neuroimaging studies by, for example, enriching data diversity.

An Explainable Geometric-Weighted Graph Attention Network for Identifying Functional Networks Associated with Gait Impairment

1 code implementation24 Jul 2023 Favour Nerrise, Qingyu Zhao, Kathleen L. Poston, Kilian M. Pohl, Ehsan Adeli

One of the hallmark symptoms of Parkinson's Disease (PD) is the progressive loss of postural reflexes, which eventually leads to gait difficulties and balance problems.

Graph Attention

Generating Realistic Brain MRIs via a Conditional Diffusion Probabilistic Model

1 code implementation15 Dec 2022 Wei Peng, Ehsan Adeli, Tomas Bosschieter, Sang Hyun Park, Qingyu Zhao, Kilian M. Pohl

As acquiring MRIs is expensive, neuroscience studies struggle to attain a sufficient number of them for properly training deep learning models.

Anatomy

Joint Graph Convolution for Analyzing Brain Structural and Functional Connectome

no code implementations27 Oct 2022 Yueting Li, Qingyue Wei, Ehsan Adeli, Kilian M. Pohl, Qingyu Zhao

The white-matter (micro-)structural architecture of the brain promotes synchrony among neuronal populations, giving rise to richly patterned functional connections.

Graph Learning

Identifying Auxiliary or Adversarial Tasks Using Necessary Condition Analysis for Adversarial Multi-task Video Understanding

no code implementations22 Aug 2022 Stephen Su, Samuel Kwong, Qingyu Zhao, De-An Huang, Juan Carlos Niebles, Ehsan Adeli

In this work, we propose a generalized notion of multi-task learning by incorporating both auxiliary tasks that the model should perform well on and adversarial tasks that the model should not perform well on.

Action Recognition Multi-Task Learning +3

Multiple Instance Neuroimage Transformer

1 code implementation19 Aug 2022 Ayush Singla, Qingyu Zhao, Daniel K. Do, Yuyin Zhou, Kilian M. Pohl, Ehsan Adeli

As a proof-of-concept, we evaluate the efficacy of our model by training it to identify sex from T1w-MRIs of two public datasets: Adolescent Brain Cognitive Development (ABCD) and the National Consortium on Alcohol and Neurodevelopment in Adolescence (NCANDA).

Brain Morphometry Multiple Instance Learning

Bridging the Gap between Deep Learning and Hypothesis-Driven Analysis via Permutation Testing

1 code implementation28 Jul 2022 Magdalini Paschali, Qingyu Zhao, Ehsan Adeli, Kilian M. Pohl

A fundamental approach in neuroscience research is to test hypotheses based on neuropsychological and behavioral measures, i. e., whether certain factors (e. g., related to life events) are associated with an outcome (e. g., depression).

A Penalty Approach for Normalizing Feature Distributions to Build Confounder-Free Models

1 code implementation11 Jul 2022 Anthony Vento, Qingyu Zhao, Robert Paul, Kilian M. Pohl, Ehsan Adeli

In this paper, we extend the MDN method by applying a Penalty approach (referred to as PDMN).

Longitudinal Correlation Analysis for Decoding Multi-Modal Brain Development

1 code implementation10 Jul 2021 Qingyu Zhao, Ehsan Adeli, Kilian M. Pohl

Characterizing such complex brain development requires effective analysis of longitudinal and multi-modal neuroimaging data.

Metadata Normalization

1 code implementation CVPR 2021 Mandy Lu, Qingyu Zhao, Jiequan Zhang, Kilian M. Pohl, Li Fei-Fei, Juan Carlos Niebles, Ehsan Adeli

Batch Normalization (BN) and its variants have delivered tremendous success in combating the covariate shift induced by the training step of deep learning methods.

Self-Supervised Longitudinal Neighbourhood Embedding

1 code implementation5 Mar 2021 Jiahong Ouyang, Qingyu Zhao, Ehsan Adeli, Edith V Sullivan, Adolf Pfefferbaum, Greg Zaharchuk, Kilian M Pohl

Longitudinal MRIs are often used to capture the gradual deterioration of brain structure and function caused by aging or neurological diseases.

Contrastive Learning Representation Learning

Representation Disentanglement for Multi-modal brain MR Analysis

1 code implementation23 Feb 2021 Jiahong Ouyang, Ehsan Adeli, Kilian M. Pohl, Qingyu Zhao, Greg Zaharchuk

To address this issue, we propose a margin loss that regularizes the similarity in relationships of the representations across subjects and modalities.

Brain Tumor Segmentation Disentanglement +1

Going Beyond Saliency Maps: Training Deep Models to Interpret Deep Models

no code implementations16 Feb 2021 Zixuan Liu, Ehsan Adeli, Kilian M. Pohl, Qingyu Zhao

Interpretability is a critical factor in applying complex deep learning models to advance the understanding of brain disorders in neuroimaging studies.

Image-to-Image Translation

Longitudinal Self-Supervised Learning

no code implementations12 Jun 2020 Qingyu Zhao, Zixuan Liu, Ehsan Adeli, Kilian M. Pohl

Machine learning analysis of longitudinal neuroimaging data is typically based on supervised learning, which requires a large number of ground-truth labels to be informative.

Disentanglement Self-Supervised Learning

Spatio-Temporal Graph Convolution for Resting-State fMRI Analysis

2 code implementations24 Mar 2020 Soham Gadgil, Qingyu Zhao, Adolf Pfefferbaum, Edith V. Sullivan, Ehsan Adeli, Kilian M. Pohl

The Blood-Oxygen-Level-Dependent (BOLD) signal of resting-state fMRI (rs-fMRI) records the temporal dynamics of intrinsic functional networks in the brain.

Time Series Time Series Analysis

Representation Learning with Statistical Independence to Mitigate Bias

2 code implementations8 Oct 2019 Ehsan Adeli, Qingyu Zhao, Adolf Pfefferbaum, Edith V. Sullivan, Li Fei-Fei, Juan Carlos Niebles, Kilian M. Pohl

Presence of bias (in datasets or tasks) is inarguably one of the most critical challenges in machine learning applications that has alluded to pivotal debates in recent years.

Face Recognition Gender Classification +1

Bias-Resilient Neural Network

no code implementations25 Sep 2019 Ehsan Adeli, Qingyu Zhao, Adolf Pfefferbaum, Edith V. Sullivan, L. Fei-Fei, Juan Carlos Niebles, Kilian M. Pohl

We apply our method to a synthetic, a medical diagnosis, and a gender classification (Gender Shades) dataset.

Face Recognition Gender Classification +1

Confounder-Aware Visualization of ConvNets

1 code implementation30 Jul 2019 Qingyu Zhao, Ehsan Adeli, Adolf Pfefferbaum, Edith V. Sullivan, Kilian M. Pohl

With recent advances in deep learning, neuroimaging studies increasingly rely on convolutional networks (ConvNets) to predict diagnosis based on MR images.

Variational AutoEncoder For Regression: Application to Brain Aging Analysis

2 code implementations11 Apr 2019 Qingyu Zhao, Ehsan Adeli, Nicolas Honnorat, Tuo Leng, Kilian M. Pohl

While unsupervised variational autoencoders (VAE) have become a powerful tool in neuroimage analysis, their application to supervised learning is under-explored.

Disentanglement regression +1

Truncated Gaussian-Mixture Variational AutoEncoder

no code implementations11 Feb 2019 Qingyu Zhao, Nicolas Honnorat, Ehsan Adeli, Kilian M. Pohl

In this paper we propose a novel generative process, in which we use a Gaussian-mixture to model a few major clusters in the data, and use a non-informative uniform distribution to capture the remaining data.

Clustering Outlier Detection

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