Search Results for author: Yanhua Li

Found 19 papers, 4 papers with code

Loss Distillation via Gradient Matching for Point Cloud Completion with Weighted Chamfer Distance

1 code implementation10 Sep 2024 Fangzhou Lin, Haotian Liu, Haoying Zhou, Songlin Hou, Kazunori D Yamada, Gregory S. Fischer, Yanhua Li, Haichong K. Zhang, Ziming Zhang

To this end, we propose a search scheme, {\em Loss Distillation via Gradient Matching}, to find good candidate loss functions by mimicking the learning behavior in backpropagation between HyperCD and weighted CD.

Bilevel Optimization Point Cloud Completion +1

Urban-Focused Multi-Task Offline Reinforcement Learning with Contrastive Data Sharing

no code implementations20 Jun 2024 Xinbo Zhao, Yingxue Zhang, Xin Zhang, Yu Yang, Yiqun Xie, Yanhua Li, Jun Luo

MODA addresses the challenges of data scarcity and heterogeneity in a multi-task urban setting through Contrastive Data Sharing among tasks.

Autonomous Driving Data Augmentation +5

When are Foundation Models Effective? Understanding the Suitability for Pixel-Level Classification Using Multispectral Imagery

no code implementations17 Apr 2024 Yiqun Xie, Zhihao Wang, Weiye Chen, Zhili Li, Xiaowei Jia, Yanhua Li, Ruichen Wang, Kangyang Chai, Ruohan Li, Sergii Skakun

This work aims to enhance the understanding of the status and suitability of foundation models for pixel-level classification using multispectral imagery at moderate resolution, through comparisons with traditional machine learning (ML) and regular-size deep learning models.

Self-Supervised Learning

Multi-State Brain Network Discovery

no code implementations4 Nov 2023 Hang Yin, Yao Su, Xinyue Liu, Thomas Hartvigsen, Yanhua Li, Xiangnan Kong

We refer to such brain networks as multi-state, and this mixture can help us understand human behavior.

STORM-GAN: Spatio-Temporal Meta-GAN for Cross-City Estimation of Human Mobility Responses to COVID-19

no code implementations20 Jan 2023 Han Bao, Xun Zhou, Yiqun Xie, Yanhua Li, Xiaowei Jia

While deep learning approaches outperform conventional estimation techniques on tasks with abundant training data, the continuously evolving pandemic poses a significant challenge to solving this problem due to data nonstationarity, limited observations, and complex social contexts.

Generative Adversarial Network

Symphony in the Latent Space: Provably Integrating High-dimensional Techniques with Non-linear Machine Learning Models

no code implementations1 Dec 2022 Qiong Wu, Jian Li, Zhenming Liu, Yanhua Li, Mihai Cucuringu

This paper revisits building machine learning algorithms that involve interactions between entities, such as those between financial assets in an actively managed portfolio, or interactions between users in a social network.

Ensemble Learning Time Series Analysis

EgoSpeed-Net: Forecasting Speed-Control in Driver Behavior from Egocentric Video Data

no code implementations27 Sep 2022 Yichen Ding, Ziming Zhang, Yanhua Li, Xun Zhou

Speed-control forecasting, a challenging problem in driver behavior analysis, aims to predict the future actions of a driver in controlling vehicle speed such as braking or acceleration.

HintNet: Hierarchical Knowledge Transfer Networks for Traffic Accident Forecasting on Heterogeneous Spatio-Temporal Data

1 code implementation7 Mar 2022 Bang An, Amin Vahedian, Xun Zhou, W. Nick Street, Yanhua Li

However, this problem is challenging due to the spatial heterogeneity of the environment and the sparsity of accidents in space and time.

Management Transfer Learning

SBO-RNN: Reformulating Recurrent Neural Networks via Stochastic Bilevel Optimization

no code implementations NeurIPS 2021 Ziming Zhang, Yun Yue, Guojun Wu, Yanhua Li, Haichong Zhang

In this paper we consider the training stability of recurrent neural networks (RNNs) and propose a family of RNNs, namely SBO-RNN, that can be formulated using stochastic bilevel optimization (SBO).

Bilevel Optimization

Learning Lightweight Neural Networks via Channel-Split Recurrent Convolution

no code implementations29 Sep 2021 Guojun Wu, Yun Yue, Yanhua Li, Ziming Zhang

Lightweight neural networks refer to deep networks with small numbers of parameters, which are allowed to be implemented in resource-limited hardware such as embedded systems.

Stabilized Likelihood-based Imitation Learning via Denoising Continuous Normalizing Flow

no code implementations29 Sep 2021 Xin Zhang, Yanhua Li, Ziming Zhang, Christopher Brinton, Zhenming Liu, Zhi-Li Zhang, Hui Lu, Zhihong Tian

State-of-the-art imitation learning (IL) approaches, e. g, GAIL, apply adversarial training to minimize the discrepancy between expert and learner behaviors, which is prone to unstable training and mode collapse.

Denoising Imitation Learning

f-GAIL: Learning f-Divergence for Generative Adversarial Imitation Learning

no code implementations NeurIPS 2020 Xin Zhang, Yanhua Li, Ziming Zhang, Zhi-Li Zhang

This naturally gives rise to the following question: Given a set of expert demonstrations, which divergence can recover the expert policy more accurately with higher data efficiency?

Imitation Learning

$f$-GAIL: Learning $f$-Divergence for Generative Adversarial Imitation Learning

1 code implementation2 Oct 2020 Xin Zhang, Yanhua Li, Ziming Zhang, Zhi-Li Zhang

This naturally gives rise to the following question: Given a set of expert demonstrations, which divergence can recover the expert policy more accurately with higher data efficiency?

Imitation Learning

BATS: A Spectral Biclustering Approach to Single Document Topic Modeling and Segmentation

no code implementations5 Aug 2020 Qiong Wu, Adam Hare, Sirui Wang, Yuwei Tu, Zhenming Liu, Christopher G. Brinton, Yanhua Li

In this work, we reexamine the inter-related problems of "topic identification" and "text segmentation" for sparse document learning, when there is a single new text of interest.

Diversity Segmentation +2

ASYNCHRONOUS MULTI-AGENT GENERATIVE ADVERSARIAL IMITATION LEARNING

no code implementations25 Sep 2019 Xin Zhang, Weixiao Huang, Renjie Liao, Yanhua Li

Imitation learning aims to inversely learn a policy from expert demonstrations, which has been extensively studied in the literature for both single-agent setting with Markov decision process (MDP) model, and multi-agent setting with Markov game (MG) model.

Imitation Learning

Reward Advancement: Transforming Policy under Maximum Causal Entropy Principle

no code implementations11 Jul 2019 Guojun Wu, Yanhua Li, Zhenming Liu, Jie Bao, Yu Zheng, Jieping Ye, Jun Luo

In this paper, we define and investigate a general reward trans-formation problem (namely, reward advancement): Recovering the range of additional reward functions that transform the agent's policy from original policy to a predefined target policy under MCE principle.

Decision Making

Adaptive Reduced Rank Regression

1 code implementation NeurIPS 2020 Qiong Wu, Felix Ming Fai Wong, Zhenming Liu, Yanhua Li, Varun Kanade

We study the low rank regression problem $\my = M\mx + \epsilon$, where $\mx$ and $\my$ are $d_1$ and $d_2$ dimensional vectors respectively.

regression

Predicting Urban Dispersal Events: A Two-Stage Framework through Deep Survival Analysis on Mobility Data

no code implementations3 May 2019 Amin Vahedian, Xun Zhou, Ling Tong, W. Nick Street, Yanhua Li

We propose a two-stage framework (DILSA), where a deep learning model combined with survival analysis is developed to predict the probability of a dispersal event and its demand volume.

Survival Analysis

Influence Diffusion Dynamics and Influence Maximization in Social Networks with Friend and Foe Relationships

no code implementations21 Nov 2011 Yanhua Li, Wei Chen, Yajun Wang, Zhi-Li Zhang

Influence diffusion and influence maximization in large-scale online social networks (OSNs) have been extensively studied, because of their impacts on enabling effective online viral marketing.

Social and Information Networks Discrete Mathematics Physics and Society E.1; H.3.3

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