Search Results for author: Zhihang Li

Found 14 papers, 4 papers with code

How to Inverting the Leverage Score Distribution?

no code implementations21 Apr 2024 Zhihang Li, Zhao Song, Weixin Wang, Junze Yin, Zheng Yu

Leverage score is a fundamental problem in machine learning and theoretical computer science.

Local Convergence of Approximate Newton Method for Two Layer Nonlinear Regression

no code implementations26 Nov 2023 Zhihang Li, Zhao Song, Zifan Wang, Junze Yin

Our main results involve analyzing the convergence properties of an approximate Newton method used to minimize the regularized training loss.

Question Answering regression +2

Zero-th Order Algorithm for Softmax Attention Optimization

no code implementations17 Jul 2023 Yichuan Deng, Zhihang Li, Sridhar Mahadevan, Zhao Song

We demonstrate the convergence of our algorithm, highlighting its effectiveness in efficiently computing gradients for large-scale LLMs.

Solving Regularized Exp, Cosh and Sinh Regression Problems

no code implementations28 Mar 2023 Zhihang Li, Zhao Song, Tianyi Zhou

In this paper, we make use of the input sparsity and purpose an algorithm that use $\log ( \|x_0 - x^*\|_2 / \epsilon)$ iterations and $\widetilde{O}(\mathrm{nnz}(A) + d^{\omega} )$ per iteration time to solve the problem.

regression

Self-Supervised Modality-Aware Multiple Granularity Pre-Training for RGB-Infrared Person Re-Identification

1 code implementation12 Dec 2021 Lin Wan, Qianyan Jing, Zongyuan Sun, Chuang Zhang, Zhihang Li, Yehansen Chen

Much of that is due to the notorious modality bias training issue brought by the single-modality ImageNet pre-training, which might yield RGB-biased representations that severely hinder the cross-modality image retrieval.

Contrastive Learning Cross-Modality Person Re-identification +3

G2DA: Geometry-Guided Dual-Alignment Learning for RGB-Infrared Person Re-Identification

no code implementations15 Jun 2021 Lin Wan, Zongyuan Sun, Qianyan Jing, Yehansen Chen, Lijing Lu, Zhihang Li

Specifically, we propose to build a semantic-aligned complete graph into which all cross-modality images can be mapped via a pose-adaptive graph construction mechanism.

graph construction Graph Learning +4

Neural Feature Search for RGB-Infrared Person Re-Identification

no code implementations CVPR 2021 Yehansen Chen, Lin Wan, Zhihang Li, Qianyan Jing, Zongyuan Sun

RGB-Infrared person re-identification (RGB-IR ReID) is a challenging cross-modality retrieval problem, which aims at matching the person-of-interest over visible and infrared camera views.

feature selection Person Re-Identification +1

ACFNet: Attentional Class Feature Network for Semantic Segmentation

1 code implementation ICCV 2019 Fan Zhang, Yanqin Chen, Zhihang Li, Zhibin Hong, Jingtuo Liu, Feifei Ma, Junyu Han, Errui Ding

Recent works have made great progress in semantic segmentation by exploiting richer context, most of which are designed from a spatial perspective.

Segmentation Semantic Segmentation

PyramidBox++: High Performance Detector for Finding Tiny Face

4 code implementations31 Mar 2019 Zhihang Li, Xu Tang, Junyu Han, Jingtuo Liu, Ran He

With the rapid development of deep convolutional neural network, face detection has made great progress in recent years.

Data Augmentation Face Detection +1

IntroVAE: Introspective Variational Autoencoders for Photographic Image Synthesis

3 code implementations NeurIPS 2018 Huaibo Huang, Zhihang Li, Ran He, Zhenan Sun, Tieniu Tan

On the other hand, the inference model is encouraged to classify between the generated and real samples while the generator tries to fool it as GANs.

Image Generation

Learning Disentangling and Fusing Networks for Face Completion Under Structured Occlusions

no code implementations13 Dec 2017 Zhihang Li, Yibo Hu, Ran He

We treat the face completion and corruption as disentangling and fusing processes of clean faces and occlusions, and propose a jointly disentangling and fusing Generative Adversarial Network (DF-GAN).

Facial Inpainting Generative Adversarial Network

Recent Progress of Face Image Synthesis

no code implementations15 Jun 2017 Zhihe Lu, Zhihang Li, Jie Cao, Ran He, Zhenan Sun

Face synthesis has been a fascinating yet challenging problem in computer vision and machine learning.

Face Generation Face Recognition

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