Search Results for author: Yijun Li

Found 49 papers, 20 papers with code

Distributionally Robust Policy Evaluation and Learning for Continuous Treatment with Observational Data

no code implementations18 Jan 2025 Cheuk Hang Leung, Yiyan Huang, Yijun Li, Qi Wu

The proposed distributionally robust estimators are established using the Inverse Probability Weighting (IPW) method extended from the discrete one for policy evaluation and learning under continuous treatments.

TransPixeler: Advancing Text-to-Video Generation with Transparency

1 code implementation6 Jan 2025 Luozhou Wang, Yijun Li, Zhifei Chen, Jui-Hsien Wang, Zhifei Zhang, He Zhang, Zhe Lin, Yingcong Chen

Text-to-video generative models have made significant strides, enabling diverse applications in entertainment, advertising, and education.

Text-to-Video Generation Video Generation

LayerFusion: Harmonized Multi-Layer Text-to-Image Generation with Generative Priors

no code implementations5 Dec 2024 Yusuf Dalva, Yijun Li, Qing Liu, Nanxuan Zhao, Jianming Zhang, Zhe Lin, Pinar Yanardag

In this paper, we propose a novel image generation pipeline based on Latent Diffusion Models (LDMs) that generates images with two layers: a foreground layer (RGBA) with transparency information and a background layer (RGB).

Text-to-Image Generation

Generative Image Layer Decomposition with Visual Effects

no code implementations26 Nov 2024 Jinrui Yang, Qing Liu, Yijun Li, Soo Ye Kim, Daniil Pakhomov, Mengwei Ren, Jianming Zhang, Zhe Lin, Cihang Xie, Yuyin Zhou

Layered representations, which allow for independent editing of image components, are essential for user-driven content creation, yet existing approaches often struggle to decompose image into plausible layers with accurately retained transparent visual effects such as shadows and reflections.

A Hybrid Defense Strategy for Boosting Adversarial Robustness in Vision-Language Models

no code implementations18 Oct 2024 Yuhan Liang, Yijun Li, Yumeng Niu, Qianhe Shen, Hangyu Liu

The neural network model achieved a high accuracy of 98% in these challenging classification tasks, while the XGBoost model reached a success rate of 85. 26% in prediction tasks.

Adversarial Robustness Autonomous Driving

Removing Distributional Discrepancies in Captions Improves Image-Text Alignment

no code implementations1 Oct 2024 Yuheng Li, Haotian Liu, Mu Cai, Yijun Li, Eli Shechtman, Zhe Lin, Yong Jae Lee, Krishna Kumar Singh

In this paper, we introduce a model designed to improve the prediction of image-text alignment, targeting the challenge of compositional understanding in current visual-language models.

Language Modeling Language Modelling

SG-Adapter: Enhancing Text-to-Image Generation with Scene Graph Guidance

no code implementations24 May 2024 Guibao Shen, Luozhou Wang, Jiantao Lin, Wenhang Ge, Chaozhe Zhang, Xin Tao, Yuan Zhang, Pengfei Wan, Zhongyuan Wang, Guangyong Chen, Yijun Li, Ying-Cong Chen

In this paper, we introduce the Scene Graph Adapter(SG-Adapter), leveraging the structured representation of scene graphs to rectify inaccuracies in the original text embeddings.

Text-to-Image Generation

Attention-Driven Training-Free Efficiency Enhancement of Diffusion Models

no code implementations CVPR 2024 Hongjie Wang, Difan Liu, Yan Kang, Yijun Li, Zhe Lin, Niraj K. Jha, Yuchen Liu

Specifically, for single-denoising-step pruning, we develop a novel ranking algorithm, Generalized Weighted Page Rank (G-WPR), to identify redundant tokens, and a similarity-based recovery method to restore tokens for the convolution operation.

Denoising

Motion Inversion for Video Customization

1 code implementation29 Mar 2024 Luozhou Wang, Ziyang Mai, Guibao Shen, Yixun Liang, Xin Tao, Pengfei Wan, Di Zhang, Yijun Li, Yingcong Chen

In this work, we present a novel approach for motion customization in video generation, addressing the widespread gap in the exploration of motion representation within video generative models.

Video Generation

Unveiling the Potential of Robustness in Selecting Conditional Average Treatment Effect Estimators

1 code implementation28 Feb 2024 Yiyan Huang, Cheuk Hang Leung, Siyi Wang, Yijun Li, Qi Wu

To address these challenges, this paper introduces a Distributionally Robust Metric (DRM) for CATE estimator selection.

Causal Inference counterfactual +2

The Causal Impact of Credit Lines on Spending Distributions

1 code implementation16 Dec 2023 Yijun Li, Cheuk Hang Leung, Xiangqian Sun, Chaoqun Wang, Yiyan Huang, Xing Yan, Qi Wu, Dongdong Wang, Zhixiang Huang

Consumer credit services offered by e-commerce platforms provide customers with convenient loan access during shopping and have the potential to stimulate sales.

Separate-and-Enhance: Compositional Finetuning for Text2Image Diffusion Models

no code implementations10 Dec 2023 Zhipeng Bao, Yijun Li, Krishna Kumar Singh, Yu-Xiong Wang, Martial Hebert

Despite recent significant strides achieved by diffusion-based Text-to-Image (T2I) models, current systems are still less capable of ensuring decent compositional generation aligned with text prompts, particularly for the multi-object generation.

Test-time Adaptation

Data-driven Preference Learning Methods for Sorting Problems with Multiple Temporal Criteria

no code implementations22 Sep 2023 Yijun Li, Mengzhuo Guo, Miłosz Kadziński, Qingpeng Zhang

This study presents novel preference learning approaches to multiple criteria sorting problems in the presence of temporal criteria.

Ensemble Learning

DeLELSTM: Decomposition-based Linear Explainable LSTM to Capture Instantaneous and Long-term Effects in Time Series

no code implementations26 Aug 2023 Chaoqun Wang, Yijun Li, Xiangqian Sun, Qi Wu, Dongdong Wang, Zhixiang Huang

The tensorized LSTM assigns each variable with a unique hidden state making up a matrix $\mathbf{h}_t$, and the standard LSTM models all the variables with a shared hidden state $\mathbf{H}_t$.

Time Series Time Series Forecasting

Consistent Multimodal Generation via A Unified GAN Framework

no code implementations4 Jul 2023 Zhen Zhu, Yijun Li, Weijie Lyu, Krishna Kumar Singh, Zhixin Shu, Soeren Pirk, Derek Hoiem

We investigate how to generate multimodal image outputs, such as RGB, depth, and surface normals, with a single generative model.

multimodal generation

Text-Anchored Score Composition: Tackling Condition Misalignment in Text-to-Image Diffusion Models

1 code implementation26 Jun 2023 Luozhou Wang, Guibao Shen, Wenhang Ge, Guangyong Chen, Yijun Li, Ying-Cong Chen

However, these models are learned based on the premise of perfect alignment between the text and extra conditions.

Image Generation

Probabilistic Learning of Multivariate Time Series with Temporal Irregularity

1 code implementation15 Jun 2023 Yijun Li, Cheuk Hang Leung, Qi Wu

Multivariate sequential data collected in practice often exhibit temporal irregularities, including nonuniform time intervals and component misalignment.

Imputation Time Series

Neural Partial Differential Equations with Functional Convolution

no code implementations10 Mar 2023 Ziqian Wu, Xingzhe He, Yijun Li, Cheng Yang, Rui Liu, Shiying Xiong, Bo Zhu

We present a lightweighted neural PDE representation to discover the hidden structure and predict the solution of different nonlinear PDEs.

Challenges and perspectives in computational deconvolution of genomics data

no code implementations21 Nov 2022 Lana X. Garmire, Yijun Li, Qianhui Huang, Chuan Xu, Sarah Teichmann, Naftali Kaminski, Matteo Pellegrini, Quan Nguyen, Andrew E. Teschendorff

Deciphering cell type heterogeneity is crucial for systematically understanding tissue homeostasis and its dysregulation in diseases.

Benchmarking

3D-FM GAN: Towards 3D-Controllable Face Manipulation

no code implementations24 Aug 2022 Yuchen Liu, Zhixin Shu, Yijun Li, Zhe Lin, Richard Zhang, S. Y. Kung

While concatenating GAN inversion and a 3D-aware, noise-to-image GAN is a straight-forward solution, it is inefficient and may lead to noticeable drop in editing quality.

Spatially-Adaptive Multilayer Selection for GAN Inversion and Editing

1 code implementation CVPR 2022 Gaurav Parmar, Yijun Li, Jingwan Lu, Richard Zhang, Jun-Yan Zhu, Krishna Kumar Singh

We propose a new method to invert and edit such complex images in the latent space of GANs, such as StyleGAN2.

Computational Methods for Single-Cell Multi-Omics Integration and Alignment

no code implementations18 Jan 2022 Stefan Stanojevic, Yijun Li, Lana X. Garmire

Recently developed technologies to generate single-cell genomic data have made a revolutionary impact in the field of biology.

Machine Translation Translation

IMAGINE: Image Synthesis by Image-Guided Model Inversion

no code implementations CVPR 2021 Pei Wang, Yijun Li, Krishna Kumar Singh, Jingwan Lu, Nuno Vasconcelos

We introduce an inversion based method, denoted as IMAge-Guided model INvErsion (IMAGINE), to generate high-quality and diverse images from only a single training sample.

Image Generation model +1

Rethinking and Improving the Robustness of Image Style Transfer

1 code implementation CVPR 2021 Pei Wang, Yijun Li, Nuno Vasconcelos

Extensive research in neural style transfer methods has shown that the correlation between features extracted by a pre-trained VGG network has a remarkable ability to capture the visual style of an image.

Style Transfer

Content-Aware GAN Compression

1 code implementation CVPR 2021 Yuchen Liu, Zhixin Shu, Yijun Li, Zhe Lin, Federico Perazzi, S. Y. Kung

We then propose a novel content-aware method to guide the processes of both pruning and distillation.

Image Manipulation Knowledge Distillation

Learning to Caricature via Semantic Shape Transform

1 code implementation12 Aug 2020 Wenqing Chu, Wei-Chih Hung, Yi-Hsuan Tsai, Yu-Ting Chang, Yijun Li, Deng Cai, Ming-Hsuan Yang

Caricature is an artistic drawing created to abstract or exaggerate facial features of a person.

Caricature

Modeling Artistic Workflows for Image Generation and Editing

1 code implementation ECCV 2020 Hung-Yu Tseng, Matthew Fisher, Jingwan Lu, Yijun Li, Vladimir Kim, Ming-Hsuan Yang

People often create art by following an artistic workflow involving multiple stages that inform the overall design.

Image Generation

Collaborative Distillation for Ultra-Resolution Universal Style Transfer

1 code implementation CVPR 2020 Huan Wang, Yijun Li, Yuehai Wang, Haoji Hu, Ming-Hsuan Yang

In this work, we present a new knowledge distillation method (named Collaborative Distillation) for encoder-decoder based neural style transfer to reduce the convolutional filters.

Decoder Knowledge Distillation +1

Controllable and Progressive Image Extrapolation

no code implementations25 Dec 2019 Yijun Li, Lu Jiang, Ming-Hsuan Yang

Image extrapolation aims at expanding the narrow field of view of a given image patch.

Im2Pencil: Controllable Pencil Illustration from Photographs

1 code implementation CVPR 2019 Yijun Li, Chen Fang, Aaron Hertzmann, Eli Shechtman, Ming-Hsuan Yang

We propose a high-quality photo-to-pencil translation method with fine-grained control over the drawing style.

Diversity Translation

Flow-Grounded Spatial-Temporal Video Prediction from Still Images

1 code implementation ECCV 2018 Yijun Li, Chen Fang, Jimei Yang, Zhaowen Wang, Xin Lu, Ming-Hsuan Yang

Existing video prediction methods mainly rely on observing multiple historical frames or focus on predicting the next one-frame.

Diversity Prediction +1

A Closed-form Solution to Photorealistic Image Stylization

12 code implementations ECCV 2018 Yijun Li, Ming-Yu Liu, Xueting Li, Ming-Hsuan Yang, Jan Kautz

Photorealistic image stylization concerns transferring style of a reference photo to a content photo with the constraint that the stylized photo should remain photorealistic.

Form Image Stylization

Joint Image Filtering with Deep Convolutional Networks

no code implementations11 Oct 2017 Yijun Li, Jia-Bin Huang, Narendra Ahuja, Ming-Hsuan Yang

In contrast to existing methods that consider only the guidance image, the proposed algorithm can selectively transfer salient structures that are consistent with both guidance and target images.

Universal Style Transfer via Feature Transforms

15 code implementations NeurIPS 2017 Yijun Li, Chen Fang, Jimei Yang, Zhaowen Wang, Xin Lu, Ming-Hsuan Yang

The whitening and coloring transforms reflect a direct matching of feature covariance of the content image to a given style image, which shares similar spirits with the optimization of Gram matrix based cost in neural style transfer.

Image Reconstruction Style Transfer

Generative Face Completion

2 code implementations CVPR 2017 Yijun Li, Sifei Liu, Jimei Yang, Ming-Hsuan Yang

In this paper, we propose an effective face completion algorithm using a deep generative model.

Facial Inpainting Semantic Parsing

Diversified Texture Synthesis with Feed-forward Networks

no code implementations CVPR 2017 Yijun Li, Chen Fang, Jimei Yang, Zhaowen Wang, Xin Lu, Ming-Hsuan Yang

Recent progresses on deep discriminative and generative modeling have shown promising results on texture synthesis.

Diversity Texture Synthesis

Robust High Quality Image Guided Depth Upsampling

no code implementations17 Jun 2015 Wei Liu, Yijun Li, Xiaogang Chen, Jie Yang, Qiang Wu, Jingyi Yu

A popular solution is upsampling the obtained noisy low resolution depth map with the guidance of the companion high resolution color image.

Vocal Bursts Intensity Prediction

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