activity
20202023
most citedGradient-based Bi-level Optimization for Deep Learning: A Survey

10 citations · 16 across the 7 of their papers we have counts for

collaborators

8 papers

cs.LG2023

DFWLayer: Differentiable Frank-Wolfe Optimization Layer

Zixuan Liu, Liu Liu, Xueqian Wang +1

Differentiable optimization has received a significant amount of attention due to its foundational role in the domain of machine learning based on neural networks. This paper propo…

cs.LG2023★ 2 cited

Over-training with Mixup May Hurt Generalization

Zixuan Liu, Ziqiao Wang, Hongyu Guo +1

Mixup, which creates synthetic training instances by linearly interpolating random sample pairs, is a simple and yet effective regularization technique to boost the performance of…

cs.CV2022

Brain-Aware Replacements for Supervised Contrastive Learning in Detection of Alzheimer's Disease

Mehmet Saygın Seyfioğlu, Zixuan Liu, Pranav Kamath +4

We propose a novel framework for Alzheimer's disease (AD) detection using brain MRIs. The framework starts with a data augmentation method called Brain-Aware Replacements (BAR), wh…

cs.LG2022★ 10 cited

Gradient-based Bi-level Optimization for Deep Learning: A Survey

Can Chen, Xi Chen, Chen Ma +2

Bi-level optimization, especially the gradient-based category, has been widely used in the deep learning community including hyperparameter optimization and meta-knowledge extracti…

cs.LG2021★ 1 cited

CoDiM: Learning with Noisy Labels via Contrastive Semi-Supervised Learning

Xin Zhang, Zixuan Liu, Kaiwen Xiao +5

Labels are costly and sometimes unreliable. Noisy label learning, semi-supervised learning, and contrastive learning are three different strategies for designing learning processes…

cs.CL2021★ 2 cited

GraghVQA: Language-Guided Graph Neural Networks for Graph-based Visual Question Answering

Weixin Liang, Yanhao Jiang, Zixuan Liu

Images are more than a collection of objects or attributes -- they represent a web of relationships among interconnected objects. Scene Graph has emerged as a new modality for a st…

eess.IV2021★ 1 cited

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

Zixuan Liu, Ehsan Adeli, Kilian M. Pohl +1

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

cs.LG2020

Longitudinal Self-Supervised Learning

Qingyu Zhao, Zixuan Liu, Ehsan Adeli +1

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. As gr…