no code implementations • 22 Mar 2024 • Renzhe Xu, Haotian Wang, Xingxuan Zhang, Bo Li, Peng Cui
We introduce the Proportional Payoff Allocation Game (PPA-Game) to model how agents, akin to content creators on platforms like YouTube and TikTok, compete for divisible resources and consumers' attention.
no code implementations • 9 Feb 2024 • Xingxuan Zhang, Jiansheng Li, Wenjing Chu, Junjia Hai, Renzhe Xu, Yuqing Yang, Shikai Guan, Jiazheng Xu, Peng Cui
We investigate the generalization boundaries of current Multimodal Large Language Models (MLLMs) via comprehensive evaluation under out-of-distribution scenarios and domain-specific tasks.
no code implementations • ICCV 2023 • Xingxuan Zhang, Renzhe Xu, Han Yu, Yancheng Dong, Pengfei Tian, Peng Cu
However, we reveal that Adam is not necessarily the optimal choice for the majority of current DG methods and datasets.
1 code implementation • 30 May 2023 • Renzhe Xu, Haotian Wang, Xingxuan Zhang, Bo Li, Peng Cui
In reality, agents often have to learn and maximize the rewards of the resources at the same time.
no code implementations • 24 May 2023 • Han Yu, Xingxuan Zhang, Renzhe Xu, Jiashuo Liu, Yue He, Peng Cui
This paper examines the risks of test data information leakage from two aspects of the current evaluation protocol: supervised pretraining on ImageNet and oracle model selection.
1 code implementation • CVPR 2023 • Xingxuan Zhang, Renzhe Xu, Han Yu, Hao Zou, Peng Cui
Yet the current definition of flatness discussed in SAM and its follow-ups are limited to the zeroth-order flatness (i. e., the worst-case loss within a perturbation radius).
1 code implementation • 24 Jan 2023 • Xiao Zhou, Yong Lin, Renjie Pi, Weizhong Zhang, Renzhe Xu, Peng Cui, Tong Zhang
The overfitting issue is addressed by considering a bilevel formulation to search for the sample reweighting, in which the generalization complexity depends on the search space of sample weights instead of the model size.
no code implementations • 2 Dec 2022 • Han Yu, Peng Cui, Yue He, Zheyan Shen, Yong Lin, Renzhe Xu, Xingxuan Zhang
The problem of covariate-shift generalization has attracted intensive research attention.
1 code implementation • 15 Oct 2022 • Renzhe Xu, Xingxuan Zhang, Bo Li, Yafeng Zhang, Xiaolong Chen, Peng Cui
In this paper, we assume that each consumer can purchase multiple products at will.
2 code implementations • CVPR 2023 • Xingxuan Zhang, Yue He, Renzhe Xu, Han Yu, Zheyan Shen, Peng Cui
Most current evaluation methods for domain generalization (DG) adopt the leave-one-out strategy as a compromise on the limited number of domains.
no code implementations • 27 Mar 2022 • Xingxuan Zhang, Zekai Xu, Renzhe Xu, Jiashuo Liu, Peng Cui, Weitao Wan, Chong Sun, Chen Li
Despite the striking performance achieved by modern detectors when training and test data are sampled from the same or similar distribution, the generalization ability of detectors under unknown distribution shifts remains hardly studied.
1 code implementation • 9 Feb 2022 • Renzhe Xu, Xingxuan Zhang, Peng Cui, Bo Li, Zheyan Shen, Jiazheng Xu
Personalized pricing is a business strategy to charge different prices to individual consumers based on their characteristics and behaviors.
1 code implementation • 3 Nov 2021 • Renzhe Xu, Xingxuan Zhang, Zheyan Shen, Tong Zhang, Peng Cui
Afterward, we prove that under ideal conditions, independence-driven importance weighting algorithms could identify the variables in this set.
no code implementations • 31 Aug 2021 • Jiashuo Liu, Zheyan Shen, Yue He, Xingxuan Zhang, Renzhe Xu, Han Yu, Peng Cui
This paper represents the first comprehensive, systematic review of OOD generalization, encompassing a spectrum of aspects from problem definition, methodological development, and evaluation procedures, to the implications and future directions of the field.
no code implementations • CVPR 2022 • Xingxuan Zhang, Linjun Zhou, Renzhe Xu, Peng Cui, Zheyan Shen, Haoxin Liu
Domain generalization (DG) aims to help models trained on a set of source domains generalize better on unseen target domains.
2 code implementations • CVPR 2021 • Xingxuan Zhang, Peng Cui, Renzhe Xu, Linjun Zhou, Yue He, Zheyan Shen
Approaches based on deep neural networks have achieved striking performance when testing data and training data share similar distribution, but can significantly fail otherwise.
Ranked #28 on Domain Generalization on VLCS
no code implementations • 1 Jan 2021 • Xingxuan Zhang, Peng Cui, Renzhe Xu, Yue He, Linjun Zhou, Zheyan Shen
We propose to address this problem by removing the dependencies between features via reweighting training samples, which results in a more balanced distribution and helps deep models get rid of spurious correlations and, in turn, concentrate more on the true connection between features and labels.
1 code implementation • 18 Jun 2020 • Renzhe Xu, Peng Cui, Kun Kuang, Bo Li, Linjun Zhou, Zheyan Shen, Wei Cui
In practice, there frequently exist a certain set of variables we term as fair variables, which are pre-decision covariates such as users' choices.