Search Results for author: Zhigang Li

Found 17 papers, 2 papers with code

Enhancing Few-shot CLIP with Semantic-Aware Fine-Tuning

no code implementations8 Nov 2023 Yao Zhu, Yuefeng Chen, Wei Wang, Xiaofeng Mao, Xiu Yan, Yue Wang, Zhigang Li, Wang Lu, Jindong Wang, Xiangyang Ji

Hence, we propose fine-tuning the parameters of the attention pooling layer during the training process to encourage the model to focus on task-specific semantics.

Generative Flow Networks for Precise Reward-Oriented Active Learning on Graphs

no code implementations24 Apr 2023 Yinchuan Li, Zhigang Li, Wenqian Li, Yunfeng Shao, Yan Zheng, Jianye Hao

Many score-based active learning methods have been successfully applied to graph-structured data, aiming to reduce the number of labels and achieve better performance of graph neural networks based on predefined score functions.

Active Learning

DAG Matters! GFlowNets Enhanced Explainer For Graph Neural Networks

1 code implementation4 Mar 2023 Wenqian Li, Yinchuan Li, Zhigang Li, Jianye Hao, Yan Pang

Uncovering rationales behind predictions of graph neural networks (GNNs) has received increasing attention over the years.

Combinatorial Optimization

Formation Tracking for a Multi-Auv System Based on an Adaptive Sliding Mode Method in the Water Flow Environment

no code implementations9 Jun 2022 Xin Li, Daqi Zhu, Bing Sun, Qi Chen, Wenyang Gan, Zhigang Li

At last, a robust sliding mode controller with continuous model predictive control strategy for the multi-AUV system is developed to achieve leader-follower formation tracking under the presence of bounded flow disturbances, and simulations are implemented to confirm the effectiveness of the proposed method.

Model Predictive Control

A Hierarchical Reinforcement Learning Based Optimization Framework for Large-scale Dynamic Pickup and Delivery Problems

no code implementations NeurIPS 2021 Yi Ma, Xiaotian Hao, Jianye Hao, Jiawen Lu, Xing Liu, Tong Xialiang, Mingxuan Yuan, Zhigang Li, Jie Tang, Zhaopeng Meng

To address this problem, existing methods partition the overall DPDP into fixed-size sub-problems by caching online generated orders and solve each sub-problem, or on this basis to utilize the predicted future orders to optimize each sub-problem further.

Hierarchical Reinforcement Learning

Dispatchable Region for Active Distribution Networks Using Approximate Second-Order Cone Relaxation

no code implementations1 Jul 2021 Zhigang Li, Wenjing Huang, J. H. Zheng, Q. H. Wu

Although DC and linearized AC power flow equations are typically used to model dispatchable regions for transmission systems, these equations are rarely suitable for distribution networks.

Computational Efficiency

Data-Driven Dispatchable Regions with Potentially Active Boundaries for Renewable Power Generation: Concept and Construction

no code implementations13 Dec 2020 Yanqi Liu, Zhigang Li, Wei Wei, Jiehui Zheng, Hongcai Zhang

State-of-the-art dispatchable region (DR) research has studied how system operational constraints influence the DR but has seldom considered the effect of the uncertainty features of RPG outputs.

Robust RGB-based 6-DoF Pose Estimation without Real Pose Annotations

no code implementations19 Aug 2020 Zhigang Li, Yinlin Hu, Mathieu Salzmann, Xiangyang Ji

We achieve state of the art performance on LINEMOD, and OccludedLINEMOD in without real-pose setting, even outperforming methods that rely on real annotations during training on Occluded-LINEMOD.

Pose Estimation

IFAA: Robust association identification and Inference For Absolute Abundance in microbiome analyses

1 code implementation22 Sep 2019 Zhigang Li, Lu Tian, A. James O'Malley, Margaret R. Karagas, Anne G. Hoen, Brock C. Christensen, Juliette C. Madan, Quran Wu, Raad Z. Gharaibeh, Christian Jobin, Hongzhe Li

The target of inference in microbiome analyses is usually relative abundance (RA) because RA in a sample (e. g., stool) can be considered as an approximation of RA in an entire ecosystem (e. g., gut).

Applications

Cosmological parameter estimation from large-scale structure deep learning

no code implementations28 Aug 2019 Shuyang Pan, Miaoxin Liu, Jaime Forero-Romero, Cristiano G. Sabiu, Zhigang Li, Haitao Miao, Xiao-Dong Li

We propose a light-weight deep convolutional neural network to estimate the cosmological parameters from simulated 3-dimensional dark matter distributions with high accuracy.

Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

Generate Identity-Preserving Faces by Generative Adversarial Networks

no code implementations10 Jun 2017 Zhigang Li, Yupin Luo

Generating identity-preserving faces aims to generate various face images keeping the same identity given a target face image.

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