no code implementations • 25 Aug 2023 • Hanwen Wang, Yu Qi, Lin Yao, Yueming Wang, Dario Farina, Gang Pan
Then a human-machine joint learning framework is proposed: 1) for the human side, we model the learning process in a sequential trial-and-error scenario and propose a novel ``copy/new'' feedback paradigm to help shape the signal generation of the subject toward the optimal distribution; 2) for the machine side, we propose a novel adaptive learning algorithm to learn an optimal signal distribution along with the subject's learning process.
no code implementations • 21 Jun 2023 • Xundong Wu, Pengfei Zhao, Zilin Yu, Lei Ma, Ka-Wa Yip, Huajin Tang, Gang Pan, Tiejun Huang
Our comprehension of biological neuronal networks has profoundly influenced the evolution of artificial neural networks (ANNs).
no code implementations • 6 Jun 2023 • Jiangrong Shen, Qi Xu, Jian K. Liu, Yueming Wang, Gang Pan, Huajin Tang
To take full advantage of low power consumption and improve the efficiency of these models further, the pruning methods have been explored to find sparse SNNs without redundancy connections after training.
1 code implementation • 31 May 2023 • Yangfan Hu, Qian Zheng, Xudong Jiang, Gang Pan
However, due to the quantization error and accumulating error, it often requires lots of time steps (high inference latency) to achieve high performance, which negates SNN's advantages.
no code implementations • 20 May 2023 • Jinyuan Li, Han Li, Zhuo Pan, Gang Pan
To address these problems, we propose a conceptually simple two-stage framework called Prompt ChatGPT In MNER (PGIM) in this paper.
no code implementations • 20 Apr 2023 • Hang Yu, Yu Qi, Gang Pan
NeuSort caters to the demand for real-time spike sorting in brain-machine interfaces through a neuromorphic approach.
no code implementations • 19 Apr 2023 • Qi Xu, Yaxin Li, Xuanye Fang, Jiangrong Shen, Jian K. Liu, Huajin Tang, Gang Pan
The proposed method explores a novel dynamical way for structure learning from scratch in SNNs which could build a bridge to close the gap between deep learning and bio-inspired neural dynamics.
no code implementations • CVPR 2023 • Qi Xu, Yaxin Li, Jiangrong Shen, Jian K Liu, Huajin Tang, Gang Pan
Spiking neural networks (SNNs) are well known as the brain-inspired models with high computing efficiency, due to a key component that they utilize spikes as information units, close to the biological neural systems.
no code implementations • 11 Apr 2023 • Ayon Sen, Gang Pan, Anton Mitrokhin, Ashraful Islam
Accurate camera-to-lidar calibration is a requirement for sensor data fusion in many 3D perception tasks.
1 code implementation • CVPR 2023 • Zongrui Li, Qian Zheng, Boxin Shi, Gang Pan, Xudong Jiang
Although the ambiguity is alleviated on non-Lambertian objects, the problem is still difficult to solve for more general objects with complex shapes introducing irregular shadows and general materials with complex reflectance like anisotropic reflectance.
1 code implementation • 12 Oct 2022 • Lang Feng, Qianhui Liu, Huajin Tang, De Ma, Gang Pan
Spiking neural networks (SNNs) are bio-inspired neural networks with asynchronous discrete and sparse characteristics, which have increasingly manifested their superiority in low energy consumption.
2 code implementations • 15 Sep 2022 • Long Yang, Jiaming Ji, Juntao Dai, Linrui Zhang, Binbin Zhou, Pengfei Li, Yaodong Yang, Gang Pan
Compared to previous safe RL methods, CUP enjoys the benefits of 1) CUP generalizes the surrogate functions to generalized advantage estimator (GAE), leading to strong empirical performance.
no code implementations • 18 Aug 2022 • Zongrui Li, Qian Zheng, Feishi Wang, Boxin Shi, Gang Pan, Xudong Jiang
Uncalibrated photometric stereo (UPS) is challenging due to the inherent ambiguity brought by unknown light.
1 code implementation • 26 Jul 2022 • Chaofei Hong, Mengwen Yuan, Mengxiao Zhang, Xiao Wang, Chegnjun Zhang, Jiaxin Wang, Gang Pan, Zhaohui Wu, Huajin Tang
In this work, we present a Python based spiking neural network (SNN) simulation and training framework, aka SPAIC that aims to support brain-inspired model and algorithm researches integrated with features from both deep learning and neuroscience.
no code implementations • 1 May 2022 • Dong Xing, Qian Zheng, Qianhui Liu, Gang Pan
In this work, we propose TinyLight, the first DRL-based ATSC model that is designed for devices with extremely limited resources.
no code implementations • 22 Apr 2022 • Yu Qi, Xinyun Zhu, Kedi Xu, Feixiao Ren, Hongjie Jiang, Junming Zhu, Jianmin Zhang, Gang Pan, Yueming Wang
In this way, DyEnsemble copes with variability in signals and improves the robustness of online control.
1 code implementation • 15 Feb 2022 • Long Yang, Jiaming Ji, Juntao Dai, Yu Zhang, Pengfei Li, Gang Pan
Although using bounds as surrogate functions to design safe RL algorithms have appeared in some existing works, we develop them at least three aspects: (i) We provide a rigorous theoretical analysis to extend the surrogate functions to generalized advantage estimator (GAE).
2 code implementations • 7 Jul 2021 • Xumeng Han, Xuehui Yu, Guorong Li, Jian Zhao, Gang Pan, Qixiang Ye, Jianbin Jiao, Zhenjun Han
While extensive research has focused on the framework design and loss function, this paper shows that sampling strategy plays an equally important role.
no code implementations • CVPR 2021 • Zehao Chen, Qian Zheng, Peisong Niu, Huajin Tang, Gang Pan
Image-based methods for indoor lighting estimation suffer from the problem of intensity-distance ambiguity.
no code implementations • 15 Jun 2021 • Long Yang, Zhao Li, Zehong Hu, Shasha Ruan, Shijian Li, Gang Pan, Hongyang Chen
In this paper, we propose a Thompson Sampling algorithm for \emph{unimodal} bandits, where the expected reward is unimodal over the partially ordered arms.
no code implementations • 22 Apr 2021 • Yuxuan Chen, Li Zhang, Shijian Li, Gang Pan
Optimization of deep learning algorithms to approach Nash Equilibrium remains a significant problem in imperfect information games, e. g. StarCraft and poker.
1 code implementation • NeurIPS 2020 • Tao Fang, Yu Qi, Gang Pan
Reconstructing seeing images from fMRI recordings is an absorbing research area in neuroscience and provides a potential brain-reading technology.
no code implementations • 14 Dec 2020 • Long Yang, Gang Zheng, Yu Zhang, Qian Zheng, Pengfei Li, Gang Pan
We study the convergence of $\mathtt{Expected~Sarsa}(\lambda)$ with linear function approximation.
no code implementations • 2 Dec 2020 • Long Yang, Qian Zheng, Gang Pan
However, due to the inherent non-concavity of its objective, convergence to a first-order stationary point (FOSP) can not guarantee the policy gradient methods finding a maximal point.
no code implementations • 14 Feb 2020 • Qianhui Liu, Haibo Ruan, Dong Xing, Huajin Tang, Gang Pan
Address event representation (AER) cameras have recently attracted more attention due to the advantages of high temporal resolution and low power consumption, compared with traditional frame-based cameras.
no code implementations • 19 Nov 2019 • Qianhui Liu, Gang Pan, Haibo Ruan, Dong Xing, Qi Xu, Huajin Tang
This paper proposes an unsupervised address event representation (AER) object recognition approach.
1 code implementation • NeurIPS 2019 • Yu Qi, Bin Liu, Yueming Wang, Gang Pan
Brain-computer interfaces (BCIs) have enabled prosthetic device control by decoding motor movements from neural activities.
no code implementations • 6 Sep 2019 • Long Yang, Yu Zhang, Qian Zheng, Pengfei Li, Gang Pan
To address above problem, we propose a GQ$(\sigma,\lambda)$ that extends tabular Q$(\sigma,\lambda)$ with linear function approximation.
no code implementations • 1 Jul 2019 • Longxiang Shi, Shijian Li, Longbing Cao, Long Yang, Gang Zheng, Gang Pan
Alternatively, derivative-based methods treat the optimization process as a blackbox and show robustness and stability in learning continuous control tasks, but not data efficient in learning.
no code implementations • 25 Jun 2019 • Long Yang, Yu Zhang, Jun Wen, Qian Zheng, Pengfei Li, Gang Pan
In this paper, for reducing the variance, we introduce control variate technique to $\mathtt{Expected}$ $\mathtt{Sarsa}$($\lambda$) and propose a tabular $\mathtt{ES}$($\lambda$)-$\mathtt{CV}$ algorithm.
no code implementations • 25 Jun 2019 • Long Yang, Yu Zhang, Gang Zheng, Qian Zheng, Pengfei Li, Jianhang Huang, Jun Wen, Gang Pan
Improving sample efficiency has been a longstanding goal in reinforcement learning.
1 code implementation • 17 Jun 2019 • Zhen Zhou, Xiaobo Chen, Yu Zhang, Lishan Qiao, Renping Yu, Gang Pan, Han Zhang, Dinggang Shen
The goal of this work is to introduce a toolbox namely "Brain Network Construction and Classification" (BrainNetClass) to the field to promote more advanced brain network construction methods.
no code implementations • 17 May 2019 • Longxiang Shi, Shijian Li, Longbing Cao, Long Yang, Gang Pan
However, existing off-policy learning methods based on probabilistic policy measurement are inefficient when utilizing traces under a greedy target policy, which is ineffective for control problems.
no code implementations • 22 Mar 2019 • Li Zhang, Wei Wang, Shijian Li, Gang Pan
Experimentally, we demonstrate that the proposed Monte Carlo Neural Fictitious Self Play can converge to approximate Nash equilibrium in games with large-scale search depth while the Neural Fictitious Self Play can't.
no code implementations • 25 Feb 2019 • Li Zhang, Weichen Shen, Shijian Li, Gang Pan
This model can have strong second order feature interactive learning ability like Field-aware Factorization Machine, on this basis, deep neural network is used for higher-order feature combination learning.
no code implementations • 10 Nov 2018 • Ming Zhang, Nenggan Zheng, De Ma, Gang Pan, Zonghua Gu
A Spiking Neural Network (SNN) can be trained indirectly by first training an Artificial Neural Network (ANN) with the conventional backpropagation algorithm, then converting it into an SNN.
no code implementations • 14 Jun 2018 • Wenjia Meng, Qian Zheng, Long Yang, Pengfei Li, Gang Pan
In this paper, we propose a general framework to combine DQN and most of the return-based reinforcement learning algorithms, named R-DQN.
no code implementations • 28 Apr 2018 • Yangfan Hu, Huajin Tang, Gang Pan
SNNs theoretically have at least the same computational power as traditional artificial neural networks (ANNs).
no code implementations • 23 Apr 2018 • Weichao Li, Fuxian Huang, Xi Li, Gang Pan, Fei Wu
A critical and challenging problem in reinforcement learning is how to learn the state-action value function from the experience replay buffer and simultaneously keep sample efficiency and faster convergence to a high quality solution.
no code implementations • 9 Feb 2018 • Long Yang, Minhao Shi, Qian Zheng, Wenjia Meng, Gang Pan
Results show that, with an intermediate value of $\sigma$, $Q(\sigma ,\lambda)$ creates a mixture of the existing algorithms that can learn the optimal value significantly faster than the extreme end ($\sigma=0$, or $1$).
no code implementations • 19 May 2017 • Zhenfang Hu, Gang Pan, Zhaohui Wu
The spectral graph theory provides us with a new insight into a fundamental aspect of classification: the tradeoff between fitting error and overfitting risk.
no code implementations • CVPR 2015 • Yuting Zhang, Kihyuk Sohn, Ruben Villegas, Gang Pan, Honglak Lee
Object detection systems based on the deep convolutional neural network (CNN) have recently made ground- breaking advances on several object detection benchmarks.
no code implementations • 20 Jan 2015 • Yuting Zhang, Kui Jia, Yueming Wang, Gang Pan, Tsung-Han Chan, Yi Ma
By assuming a human face as piece-wise planar surfaces, where each surface corresponds to a facial part, we develop in this paper a Constrained Part-based Alignment (CPA) algorithm for face recognition across pose and/or expression.
no code implementations • 25 Mar 2014 • Zhenfang Hu, Gang Pan, Yueming Wang, Zhaohui Wu
The methods include PCA, K-means, Laplacian eigenmap (LE), ratio cut (Rcut), and a new sparse representation method developed by us, called spectral sparse representation (SSR).
no code implementations • 6 Mar 2014 • Zhenfang Hu, Gang Pan, Yueming Wang, Zhaohui Wu
In contrast to most of existing work which deal with the problem by adding some sparsity penalties on various objectives of PCA, in this paper, we propose a new method SPCArt, whose motivation is to find a rotation matrix and a sparse basis such that the sparse basis approximates the basis of PCA after the rotation.