Search Results for author: Chen Cheng

Found 17 papers, 6 papers with code

AgentScope: A Flexible yet Robust Multi-Agent Platform

1 code implementation21 Feb 2024 Dawei Gao, Zitao Li, Weirui Kuang, Xuchen Pan, Daoyuan Chen, Zhijian Ma, Bingchen Qian, Liuyi Yao, Lin Zhu, Chen Cheng, Hongzhu Shi, Yaliang Li, Bolin Ding, Jingren Zhou

With the rapid advancement of Large Language Models (LLMs), significant progress has been made in multi-agent applications.

CUCL: Codebook for Unsupervised Continual Learning

1 code implementation25 Nov 2023 Chen Cheng, Jingkuan Song, Xiaosu Zhu, Junchen Zhu, Lianli Gao, HengTao Shen

To address this issue, after analyzing the phenomenon and identifying the lack of diversity as a vital factor, we propose a method named Codebook for Unsupervised Continual Learning (CUCL) which promotes the model to learn discriminative features to complete the class boundary.

Continual Learning Quantization

From Authority-Respect to Grassroots-Dissent: Degree-Weighted Social Learning and Convergence Speed

no code implementations13 Nov 2023 Chen Cheng, Xiao Han, Xin Tong, Yusheng Wu, Yiqing Xing

Opinions are influenced by neighbors, with varying degrees of emphasis based on their connections.

Unity

ModelScope-Agent: Building Your Customizable Agent System with Open-source Large Language Models

1 code implementation2 Sep 2023 Chenliang Li, Hehong Chen, Ming Yan, Weizhou Shen, Haiyang Xu, Zhikai Wu, Zhicheng Zhang, Wenmeng Zhou, Yingda Chen, Chen Cheng, Hongzhu Shi, Ji Zhang, Fei Huang, Jingren Zhou

Large language models (LLMs) have recently demonstrated remarkable capabilities to comprehend human intentions, engage in reasoning, and design planning-like behavior.

FaceChain: A Playground for Human-centric Artificial Intelligence Generated Content

1 code implementation28 Aug 2023 Yang Liu, Cheng Yu, Lei Shang, Yongyi He, Ziheng Wu, Xingjun Wang, Chao Xu, Haoyu Xie, Weida Wang, Yuze Zhao, Lin Zhu, Chen Cheng, Weitao Chen, Yuan YAO, Wenmeng Zhou, Jiaqi Xu, Qiang Wang, Yingda Chen, Xuansong Xie, Baigui Sun

In this paper, we present FaceChain, a personalized portrait generation framework that combines a series of customized image-generation model and a rich set of face-related perceptual understanding models (\eg, face detection, deep face embedding extraction, and facial attribute recognition), to tackle aforementioned challenges and to generate truthful personalized portraits, with only a handful of portrait images as input.

Attribute Potrait Generation +1

MCDIP-ADMM: Overcoming Overfitting in DIP-based CT reconstruction

no code implementations8 Apr 2023 Chen Cheng, Qingping Zhou

To motivate our work, we review several existing priors, namely the truncated Gaussian prior, the $l_1$ prior, the total variation prior, and the deep image prior (DIP).

Computed Tomography (CT) Image Denoising

Machine learning for phase ordering dynamics of charge density waves

no code implementations6 Mar 2023 Chen Cheng, Sheng Zhang, Gia-Wei Chern

We present a machine learning (ML) framework for large-scale dynamical simulations of charge density wave (CDW) states.

ODEs learn to walk: ODE-Net based data-driven modeling for crowd dynamics

1 code implementation18 Oct 2022 Chen Cheng, Jinglai Li

Predicting the behaviors of pedestrian crowds is of critical importance for a variety of real-world problems.

Dimension free ridge regression

no code implementations16 Oct 2022 Chen Cheng, Andrea Montanari

However, random matrix theory is largely focused on the proportional asymptotics in which the number of columns grows proportionally to the number of rows of the data matrix.

regression

Real-Time Mask Detection Based on SSD-MobileNetV2

no code implementations29 Aug 2022 Chen Cheng

An excellent automatic real-time mask detection system can reduce a lot of work pressure for relevant staff.

Transfer Learning

How many labelers do you have? A closer look at gold-standard labels

no code implementations24 Jun 2022 Chen Cheng, Hilal Asi, John Duchi

The construction of most supervised learning datasets revolves around collecting multiple labels for each instance, then aggregating the labels to form a type of ``gold-standard.''.

IOP-FL: Inside-Outside Personalization for Federated Medical Image Segmentation

1 code implementation16 Apr 2022 Meirui Jiang, Hongzheng Yang, Chen Cheng, Qi Dou

Federated learning (FL) allows multiple medical institutions to collaboratively learn a global model without centralizing client data.

Federated Learning Image Segmentation +2

Memorize to Generalize: on the Necessity of Interpolation in High Dimensional Linear Regression

no code implementations20 Feb 2022 Chen Cheng, John Duchi, Rohith Kuditipudi

We examine the necessity of interpolation in overparameterized models, that is, when achieving optimal predictive risk in machine learning problems requires (nearly) interpolating the training data.

regression

Fast Global Convergence of Natural Policy Gradient Methods with Entropy Regularization

no code implementations13 Jul 2020 Shicong Cen, Chen Cheng, Yuxin Chen, Yuting Wei, Yuejie Chi

This class of methods is often applied in conjunction with entropy regularization -- an algorithmic scheme that encourages exploration -- and is closely related to soft policy iteration and trust region policy optimization.

Policy Gradient Methods

Tackling small eigen-gaps: Fine-grained eigenvector estimation and inference under heteroscedastic noise

no code implementations14 Jan 2020 Chen Cheng, Yuting Wei, Yuxin Chen

This paper aims to address two fundamental challenges arising in eigenvector estimation and inference for a low-rank matrix from noisy observations: (1) how to estimate an unknown eigenvector when the eigen-gap (i. e. the spacing between the associated eigenvalue and the rest of the spectrum) is particularly small; (2) how to perform estimation and inference on linear functionals of an eigenvector -- a sort of "fine-grained" statistical reasoning that goes far beyond the usual $\ell_2$ analysis.

Uncertainty Quantification

Asymmetry Helps: Eigenvalue and Eigenvector Analyses of Asymmetrically Perturbed Low-Rank Matrices

no code implementations30 Nov 2018 Yuxin Chen, Chen Cheng, Jianqing Fan

The aim is to estimate the leading eigenvalue and eigenvector of $\mathbf{M}^{\star}$.

Hybrid Deep-Semantic Matrix Factorization for Tag-Aware Personalized Recommendation

no code implementations12 Aug 2017 Xu Zhenghua, Chen Cheng, Lukasiewicz Thomas, Miao Yishu

Matrix factorization has now become a dominant solution for personalized recommendation on the Social Web.

TAG

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