Search Results for author: Chenglin Li

Found 32 papers, 10 papers with code

Improving Diffusion Models for Inverse Problems Using Optimal Posterior Covariance

1 code implementation3 Feb 2024 Xinyu Peng, Ziyang Zheng, Wenrui Dai, Nuoqian Xiao, Chenglin Li, Junni Zou, Hongkai Xiong

In this paper, we propose the first unified interpretation for existing zero-shot methods from the perspective of approximating the conditional posterior mean for the reverse diffusion process of conditional sampling.

Mixed Distillation Helps Smaller Language Model Better Reasoning

no code implementations17 Dec 2023 Chenglin Li, Qianglong Chen, Liangyue Li, Caiyu Wang, Yicheng Li, Zulong Chen, Yin Zhang

While large language models (LLMs) have demonstrated exceptional performance in recent natural language processing (NLP) tasks, their deployment poses substantial challenges due to high computational and memory demands in real-world applications.

Knowledge Distillation Language Modelling

scBiGNN: Bilevel Graph Representation Learning for Cell Type Classification from Single-cell RNA Sequencing Data

no code implementations16 Dec 2023 Rui Yang, Wenrui Dai, Chenglin Li, Junni Zou, Dapeng Wu, Hongkai Xiong

A gene-level GNN is established to adaptively learn gene-gene interactions and cell representations via the self-attention mechanism, and a cell-level GNN builds on the cell-cell graph that is constructed from the cell representations generated by the gene-level GNN.

Classification Graph Representation Learning

AiluRus: A Scalable ViT Framework for Dense Prediction

1 code implementation NeurIPS 2023 Jin Li, Yaoming Wang, Xiaopeng Zhang, Bowen Shi, Dongsheng Jiang, Chenglin Li, Wenrui Dai, Hongkai Xiong, Qi Tian

Specifically, at the intermediate layer of the ViT, we utilize a spatial-aware density-based clustering algorithm to select representative tokens from the token sequence.

object-detection Object Detection +1

Frequency-Aware Transformer for Learned Image Compression

1 code implementation25 Oct 2023 Han Li, Shaohui Li, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong

Learned image compression (LIC) has gained traction as an effective solution for image storage and transmission in recent years.

Image Compression

AdSEE: Investigating the Impact of Image Style Editing on Advertisement Attractiveness

1 code implementation15 Sep 2023 Liyao Jiang, Chenglin Li, Haolan Chen, Xiaodong Gao, Xinwang Zhong, Yang Qiu, Shani Ye, Di Niu

Online advertisements are important elements in e-commerce sites, social media platforms, and search engines.

OlaGPT: Empowering LLMs With Human-like Problem-Solving Abilities

no code implementations23 May 2023 Yuanzhen Xie, Tao Xie, Mingxiong Lin, WenTao Wei, Chenglin Li, Beibei Kong, Lei Chen, Chengxiang Zhuo, Bo Hu, Zang Li

At present, most approaches focus on chains of thought (COT) and tool use, without considering the adoption and application of human cognitive frameworks.

Active Learning Decision Making +1

Learned Lossless Compression for JPEG via Frequency-Domain Prediction

no code implementations5 Mar 2023 Jixiang Luo, Shaohui Li, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong

In this paper, we propose a novel framework for learned lossless compression of JPEG images that achieves end-to-end optimized prediction of the distribution of decoded DCT coefficients.

Adapting Shortcut With Normalizing Flow: An Efficient Tuning Framework for Visual Recognition

1 code implementation CVPR 2023 Yaoming Wang, Bowen Shi, Xiaopeng Zhang, Jin Li, Yuchen Liu, Wenrui Dai, Chenglin Li, Hongkai Xiong, Qi Tian

To mitigate the computational and storage demands, recent research has explored Parameter-Efficient Fine-Tuning (PEFT), which focuses on tuning a minimal number of parameters for efficient adaptation.

One for All, All for One: Learning and Transferring User Embeddings for Cross-Domain Recommendation

1 code implementation22 Nov 2022 Chenglin Li, Yuanzhen Xie, Chenyun Yu, Bo Hu, Zang Li, Guoqiang Shu, XiaoHu Qie, Di Niu

CAT-ART boosts the recommendation performance in any target domain through the combined use of the learned global user representation and knowledge transferred from other domains, in addition to the original user embedding in the target domain.

Multi-Domain Recommender Systems Recommendation Systems +1

Optimization-based Block Coordinate Gradient Coding for Mitigating Partial Stragglers in Distributed Learning

no code implementations6 Jun 2022 Qi Wang, Ying Cui, Chenglin Li, Junni Zou, Hongkai Xiong

To reduce computational complexity, we first transform each to an equivalent but much simpler discrete problem with N\llL variables representing the partition of the L coordinates into N blocks, each with identical redundancy.

Hierarchical Spherical CNNs with Lifting-based Adaptive Wavelets for Pooling and Unpooling

no code implementations31 May 2022 Mingxing Xu, Chenglin Li, Wenrui Dai, Siheng Chen, Junni Zou, Pascal Frossard, Hongkai Xiong

Specifically, adaptive spherical wavelets are learned with a lifting structure that consists of trainable lifting operators (i. e., update and predict operators).

LiftPool: Lifting-based Graph Pooling for Hierarchical Graph Representation Learning

no code implementations27 Apr 2022 Mingxing Xu, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong

Subsequently, this local information is aligned and propagated to the preserved nodes to alleviate information loss in graph coarsening.

Graph Classification Graph Representation Learning

Hybrid ISTA: Unfolding ISTA With Convergence Guarantees Using Free-Form Deep Neural Networks

1 code implementation25 Apr 2022 Ziyang Zheng, Wenrui Dai, Duoduo Xue, Chenglin Li, Junni Zou, Hongkai Xiong

This framework is general to endow arbitrary DNNs for solving linear inverse problems with convergence guarantees.

Compressive Sensing

Contrastive Regression for Domain Adaptation on Gaze Estimation

no code implementations CVPR 2022 Yaoming Wang, Yangzhou Jiang, Jin Li, Bingbing Ni, Wenrui Dai, Chenglin Li, Hongkai Xiong, Teng Li

Appearance-based Gaze Estimation leverages deep neural networks to regress the gaze direction from monocular images and achieve impressive performance.

Domain Generalization Gaze Estimation +1

RecGURU: Adversarial Learning of Generalized User Representations for Cross-Domain Recommendation

1 code implementation19 Nov 2021 Chenglin Li, Mingjun Zhao, Huanming Zhang, Chenyun Yu, Lei Cheng, Guoqiang Shu, Beibei Kong, Di Niu

The learned GUR captures the overall preferences and characteristics of a user and thus can be used to augment the behavior data and improve recommendations in any single domain in which the user is involved.

Sequential Recommendation

Graph Convolutional Networks via Adaptive Filter Banks

no code implementations29 Sep 2021 Xing Gao, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong, Pascal Frossard

Graph convolutional networks have been a powerful tool in representation learning of networked data.

Representation Learning

Variance Reduced Domain Randomization for Policy Gradient

no code implementations29 Sep 2021 Yuankun Jiang, Chenglin Li, Wenrui Dai, Junni Zou, Hongkai Xiong

In this paper, we theoretically derive a bias-free and state/environment-dependent optimal baseline for DR, and analytically show its ability to achieve further variance reduction over the standard constant and state-dependent baselines for DR. We further propose a variance reduced domain randomization (VRDR) approach for policy gradient methods, to strike a tradeoff between the variance reduction and computational complexity in practice.

Policy Gradient Methods

Graph Neural Networks With Lifting-based Adaptive Graph Wavelets

no code implementations3 Aug 2021 Mingxing Xu, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong, Pascal Frossard

To ensure that the learned graph representations are invariant to node permutations, a layer is employed at the input of the networks to reorder the nodes according to their local topology information.

Graph Representation Learning

Message Passing in Graph Convolution Networks via Adaptive Filter Banks

no code implementations18 Jun 2021 Xing Gao, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong, Pascal Frossard

Furthermore, each filter in the spectral domain corresponds to a message passing scheme, and diverse schemes are implemented via the filter bank.

Graph Classification Representation Learning

Similarity Embedding Networks for Robust Human Activity Recognition

no code implementations31 May 2021 Chenglin Li, Carrie Lu Tong, Di Niu, Bei Jiang, Xiao Zuo, Lei Cheng, Jian Xiong, Jianming Yang

Deep learning models for human activity recognition (HAR) based on sensor data have been heavily studied recently.

Human Activity Recognition

Meta-HAR: Federated Representation Learning for Human Activity Recognition

1 code implementation31 May 2021 Chenglin Li, Di Niu, Bei Jiang, Xiao Zuo, Jianming Yang

However, the effectiveness of federated learning for HAR is affected by the fact that each user has different activity types and even a different signal distribution for the same activity type.

Activity Prediction Federated Learning +3

PAC-Bayesian Randomized Value Function with Informative Prior

no code implementations1 Jan 2021 Yuankun Jiang, Chenglin Li, Junni Zou, Wenrui Dai, Hongkai Xiong

To address this, in this paper, we propose a Bayesian linear regression with informative prior (IP-BLR) operator to leverage the data-dependent prior in the learning process of randomized value function, which can leverage the statistics of training results from previous iterations.

Reinforcement Learning (RL)

Learning Latent Architectural Distribution in Differentiable Neural Architecture Search via Variational Information Maximization

no code implementations ICCV 2021 Yaoming Wang, Yuchen Liu, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong

Existing differentiable neural architecture search approaches simply assume the architectural distribution on each edge is independent of each other, which conflicts with the intrinsic properties of architecture.

Neural Architecture Search

VEM-GCN: Topology Optimization with Variational EM for Graph Convolutional Networks

no code implementations1 Jan 2021 Rui Yang, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong

In the variational E-step, graph topology is optimized by approximating the posterior probability distribution of the latent adjacency matrix with a neural network learned from node embeddings.

Classification General Classification +2

Monotonic Robust Policy Optimization with Model Discrepancy

no code implementations1 Jan 2021 Yuankun Jiang, Chenglin Li, Junni Zou, Wenrui Dai, Hongkai Xiong

To mitigate the model discrepancy between training and target (testing) environments, domain randomization (DR) can generate plenty of environments with a sufficient diversity by randomly sampling environment parameters in simulator.

NCGNN: Node-Level Capsule Graph Neural Network for Semisupervised Classification

no code implementations7 Dec 2020 Rui Yang, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong

Therefore, it can relieve the over-smoothing issue and learn effective node representations over graphs with homophily or heterophily.

Classification Node Classification

MimicNorm: Weight Mean and Last BN Layer Mimic the Dynamic of Batch Normalization

1 code implementation19 Oct 2020 Wen Fei, Wenrui Dai, Chenglin Li, Junni Zou, Hongkai Xiong

We leverage the neural tangent kernel (NTK) theory to prove that our weight mean operation whitens activations and transits network into the chaotic regime like BN layer, and consequently, leads to an enhanced convergence.

Graph Pooling with Node Proximity for Hierarchical Representation Learning

no code implementations19 Jun 2020 Xing Gao, Wenrui Dai, Chenglin Li, Hongkai Xiong, Pascal Frossard

In this paper, we propose a novel graph pooling strategy that leverages node proximity to improve the hierarchical representation learning of graph data with their multi-hop topology.

Graph Classification Representation Learning

Android Malware Detection using Large-scale Network Representation Learning

no code implementations13 Jun 2018 Rui Zhu, Chenglin Li, Di Niu, Hongwen Zhang, Husam Kinawi

With the growth of mobile devices and applications, the number of malicious software, or malware, is rapidly increasing in recent years, which calls for the development of advanced and effective malware detection approaches.

Cryptography and Security

Android Malware Detection based on Factorization Machine

no code implementations30 May 2018 Chenglin Li, Keith Mills, Rui Zhu, Di Niu, Hongwen Zhang, Husam Kinawi

As the popularity of Android smart phones has increased in recent years, so too has the number of malicious applications.

Cryptography and Security

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