no code implementations • 11 Apr 2024 • Ying Chen, Jiajing Xie, Yuxiang Lin, Yuhang Song, Wenxian Yang, Rongshan Yu
SurvMamba is implemented with a Hierarchical Interaction Mamba (HIM) module that facilitates efficient intra-modal interactions at different granularities, thereby capturing more detailed local features as well as rich global representations.
no code implementations • 16 Feb 2024 • Tommaso Salvatori, Beren Millidge, Yuhang Song, Rafal Bogacz, Thomas Lukasiewicz
This problem can be easily solved by computing \emph{similarities} in an embedding space instead of the pixel space.
1 code implementation • 28 Sep 2023 • Yuhang Song, Anh Nguyen, Chun-Yi Lee
This paper tackles the critical challenge of object navigation in autonomous navigation systems, particularly focusing on the problem of target approach and episode termination in environments with long optimal episode length in Deep Reinforcement Learning (DRL) based methods.
no code implementations • 16 Nov 2022 • Tommaso Salvatori, Yuhang Song, Yordan Yordanov, Beren Millidge, Zhenghua Xu, Lei Sha, Cornelius Emde, Rafal Bogacz, Thomas Lukasiewicz
Predictive coding networks are neuroscience-inspired models with roots in both Bayesian statistics and neuroscience.
no code implementations • 7 Nov 2022 • Luca Pinchetti, Tommaso Salvatori, Yordan Yordanov, Beren Millidge, Yuhang Song, Thomas Lukasiewicz
A large amount of recent research has the far-reaching goal of finding training methods for deep neural networks that can serve as alternatives to backpropagation (BP).
1 code implementation • 8 Oct 2022 • Lei Sha, Yuhang Song, Yordan Yordanov, Tommaso Salvatori, Thomas Lukasiewicz
Transformers have become an indispensable module for text generation models since their great success in machine translation.
1 code implementation • 21 Jul 2022 • Beren Millidge, Yuhang Song, Tommaso Salvatori, Thomas Lukasiewicz, Rafal Bogacz
In this paper, we provide a comprehensive theoretical analysis of the properties of PCNs trained with prospective configuration.
1 code implementation • 31 May 2022 • Beren Millidge, Yuhang Song, Tommaso Salvatori, Thomas Lukasiewicz, Rafal Bogacz
How the brain performs credit assignment is a fundamental unsolved problem in neuroscience.
no code implementations • 18 Feb 2022 • Beren Millidge, Tommaso Salvatori, Yuhang Song, Rafal Bogacz, Thomas Lukasiewicz
The backpropagation of error algorithm used to train deep neural networks has been fundamental to the successes of deep learning.
1 code implementation • 9 Feb 2022 • Beren Millidge, Tommaso Salvatori, Yuhang Song, Thomas Lukasiewicz, Rafal Bogacz
A large number of neural network models of associative memory have been proposed in the literature.
no code implementations • 31 Jan 2022 • Tommaso Salvatori, Luca Pinchetti, Beren Millidge, Yuhang Song, TianYi Bao, Rafal Bogacz, Thomas Lukasiewicz
Training with backpropagation (BP) in standard deep learning consists of two main steps: a forward pass that maps a data point to its prediction, and a backward pass that propagates the error of this prediction back through the network.
no code implementations • NeurIPS 2021 • Tommaso Salvatori, Yuhang Song, Yujian Hong, Simon Frieder, Lei Sha, Zhenghua Xu, Rafal Bogacz, Thomas Lukasiewicz
We conclude by discussing the possible impact of this work in the neuroscience community, by showing that our model provides a plausible framework to study learning and retrieval of memories in the brain, as it closely mimics the behavior of the hippocampus as a memory index and generative model.
no code implementations • CVPR 2021 • Xin Deng, Hao Wang, Mai Xu, Yichen Guo, Yuhang Song, Li Yang
In addition, we propose a deep reinforcement learning scheme with a latitude adaptive reward, in order to automatically select optimal upscaling factors for different latitude bands.
no code implementations • 8 Mar 2021 • Tommaso Salvatori, Yuhang Song, Thomas Lukasiewicz, Rafal Bogacz, Zhenghua Xu
Recent works prove that these methods can approximate BP up to a certain margin on multilayer perceptrons (MLPs), and asymptotically on any other complex model, and that zero-divergence inference learning (Z-IL), a variant of PC, is able to exactly implement BP on MLPs.
no code implementations • 5 Mar 2021 • Tommaso Salvatori, Yuhang Song, Thomas Lukasiewicz, Rafal Bogacz, Zhenghua Xu
Predictive coding networks (PCNs) are an influential model for information processing in the brain.
no code implementations • 1 Jan 2021 • Hao Sun, Ziping Xu, Meng Fang, Yuhang Song, Jiechao Xiong, Bo Dai, Zhengyou Zhang, Bolei Zhou
Despite the remarkable progress made by the policy gradient algorithms in reinforcement learning (RL), sub-optimal policies usually result from the local exploration property of the policy gradient update.
no code implementations • NeurIPS 2020 • Yuhang Song, Thomas Lukasiewicz, Zhenghua Xu, Rafal Bogacz
However, there are several gaps between BP and learning in biologically plausible neuronal networks of the brain (learning in the brain, or simply BL, for short), in particular, (1) it has been unclear to date, if BP can be implemented exactly via BL, (2) there is a lack of local plasticity in BP, i. e., weight updates require information that is not locally available, while BL utilizes only locally available information, and (3)~there is a lack of autonomy in BP, i. e., some external control over the neural network is required (e. g., switching between prediction and learning stages requires changes to dynamics and synaptic plasticity rules), while BL works fully autonomously.
1 code implementation • ECCV 2020 • Jianyi Wang, Xin Deng, Mai Xu, Congyong Chen, Yuhang Song
In this paper, we focus on enhancing the perceptual quality of compressed video.
no code implementations • 11 Jun 2020 • Hao Sun, Ziping Xu, Yuhang Song, Meng Fang, Jiechao Xiong, Bo Dai, Bolei Zhou
However, PG algorithms rely on exploiting the value function being learned with the first-order update locally, which results in limited sample efficiency.
no code implementations • 22 May 2020 • Yuhang Song, Wenbo Li, Lei Zhang, Jianwei Yang, Emre Kiciman, Hamid Palangi, Jianfeng Gao, C. -C. Jay Kuo, Pengchuan Zhang
We study in this paper the problem of novel human-object interaction (HOI) detection, aiming at improving the generalization ability of the model to unseen scenarios.
1 code implementation • 28 Nov 2019 • Rong Zhang, Wei Li, Peng Wang, Chenye Guan, Jin Fang, Yuhang Song, Jinhui Yu, Baoquan Chen, Weiwei Xu, Ruigang Yang
To deal with shadows, we build up an autonomous driving shadow dataset and design a deep neural network to detect shadows automatically.
2 code implementations • 17 May 2019 • Yuhang Song, Andrzej Wojcicki, Thomas Lukasiewicz, Jianyi Wang, Abi Aryan, Zhenghua Xu, Mai Xu, Zihan Ding, Lianlong Wu
That is, there is not yet a general evaluation platform for research on multi-agent intelligence.
1 code implementation • 12 May 2019 • Yuhang Song, Jianyi Wang, Thomas Lukasiewicz, Zhenghua Xu, Shangtong Zhang, Andrzej Wojcicki, Mai Xu
Intrinsic rewards were introduced to simulate how human intelligence works; they are usually evaluated by intrinsically-motivated play, i. e., playing games without extrinsic rewards but evaluated with extrinsic rewards.
1 code implementation • 10 Nov 2018 • Yuhang Song, Jianyi Wang, Thomas Lukasiewicz, Zhenghua Xu, Mai Xu
However, HRL with multiple levels is usually needed in many real-world scenarios, whose ultimate goals are highly abstract, while their actions are very primitive.
Hierarchical Reinforcement Learning reinforcement-learning +1
no code implementations • 5 Jul 2018 • Jiali Duan, Xiaoyuan Guo, Yuhang Song, Chao Yang, C. -C. Jay Kuo
Previous methods have dealt with discrete manipulation of facial attributes such as smile, sad, angry, surprise etc, out of canonical expressions and they are not scalable, operating in single modality.
1 code implementation • 9 May 2018 • Yuhang Song, Chao Yang, Yeji Shen, Peng Wang, Qin Huang, C. -C. Jay Kuo
In this paper, we focus on image inpainting task, aiming at recovering the missing area of an incomplete image given the context information.
no code implementations • 23 Mar 2018 • Chao Yang, Yuhang Song, Xiaofeng Liu, Qingming Tang, C. -C. Jay Kuo
We present a new approach to address the difficulty of training a very deep generative model to synthesize high-quality photo-realistic inpainting.
no code implementations • ECCV 2018 • Yuhang Song, Chao Yang, Zhe Lin, Xiaofeng Liu, Qin Huang, Hao Li, C. -C. Jay Kuo
We study the task of image inpainting, which is to fill in the missing region of an incomplete image with plausible contents.
1 code implementation • 30 Oct 2017 • Yuhang Song, Mai Xu, Jianyi Wang, Minglang Qiao, Liangyu Huo, Zulin Wang
Finally, the experiments validate that our approach is effective in both offline and online prediction of HM positions for panoramic video, and that the learned offline-DHP model can improve the performance of online-DHP.
1 code implementation • 27 Oct 2017 • Yuhang Song, Main Xu, Songyang Zhang, Liangyu Huo
However, the conventional deep neural network architecture is limited in learning representations for multi-task RL (MT-RL), as multiple tasks can refer to different kinds of representations.
1 code implementation • 26 Oct 2017 • Yuhang Song, Christopher Grimm, Xianming Wang, Michael L. Littman
We examine the problem of learning mappings from state to state, suitable for use in a model-based reinforcement-learning setting, that simultaneously generalize to novel states and can capture stochastic transitions.
Model-based Reinforcement Learning reinforcement-learning +1
no code implementations • 19 Sep 2017 • Christopher Grimm, Yuhang Song, Michael L. Littman
Generative adversarial networks (GANs) are an exciting alternative to algorithms for solving density estimation problems---using data to assess how likely samples are to be drawn from the same distribution.
no code implementations • 20 Jul 2017 • Qin Huang, Chunyang Xia, Chi-Hao Wu, Siyang Li, Ye Wang, Yuhang Song, C. -C. Jay Kuo
Recent development in fully convolutional neural network enables efficient end-to-end learning of semantic segmentation.
Ranked #94 on Semantic Segmentation on NYU Depth v2
no code implementations • 31 Mar 2016 • Qin Huang, Chunyang Xia, Wenchao Zheng, Yuhang Song, Hao Xu, C. -C. Jay Kuo
Semantic segmentation is critical to image content understanding and object localization.