Search Results for author: Jun Luo

Found 87 papers, 21 papers with code

Cross-Domain Continual Learning for Edge Intelligence in Wireless ISAC Networks

no code implementations18 Feb 2025 Jingzhi Hu, Xin Li, Zhou Su, Jun Luo

In wireless networks with integrated sensing and communications (ISAC), edge intelligence (EI) is expected to be developed at edge devices (ED) for sensing user activities based on channel state information (CSI).

Continual Learning

RayLoc: Wireless Indoor Localization via Fully Differentiable Ray-tracing

no code implementations21 Jan 2025 Xueqiang Han, Tianyue Zheng, Tony Xiao Han, Jun Luo

Wireless indoor localization has been a pivotal area of research over the last two decades, becoming a cornerstone for numerous sensing applications.

Indoor Localization

Dagger Behind Smile: Fool LLMs with a Happy Ending Story

no code implementations19 Jan 2025 Xurui Song, Zhixin Xie, Shuo Huai, Jiayi Kong, Jun Luo

The wide adoption of Large Language Models (LLMs) has attracted significant attention from $\textit{jailbreak}$ attacks, where adversarial prompts crafted through optimization or manual design exploit LLMs to generate malicious contents.

LEO-Split: A Semi-Supervised Split Learning Framework over LEO Satellite Networks

no code implementations2 Jan 2025 Zheng Lin, Yuxin Zhang, Zhe Chen, Zihan Fang, Cong Wu, Xianhao Chen, Yue Gao, Jun Luo

However, the intermittent connectivity between LEO satellites and ground station (GS) significantly hinders the timely transmission of raw data to GS for centralized learning, while the scaled-up DL models hamper distributed learning on resource-constrained LEO satellites.

An Evaluation Framework for Product Images Background Inpainting based on Human Feedback and Product Consistency

no code implementations23 Dec 2024 Yuqi Liang, Jun Luo, Xiaoxi Guo, Jianqi Bi

However, the techniques still suffer from issues such as inappropriate background and inconsistent product in generated product images, and existing approaches for evaluating the quality of generated product images are mostly inconsistent with human feedback causing the evaluation for this task to depend on manual annotation.

Image Quality Assessment: Investigating Causal Perceptual Effects with Abductive Counterfactual Inference

no code implementations22 Dec 2024 Wenhao Shen, Mingliang Zhou, Yu Chen, Xuekai Wei, Jun Luo, Huayan Pu, Weijia Jia

Existing full-reference image quality assessment (FR-IQA) methods often fail to capture the complex causal mechanisms that underlie human perceptual responses to image distortions, limiting their ability to generalize across diverse scenarios.

counterfactual Counterfactual Inference +1

GeoPro-Net: Learning Interpretable Spatiotemporal Prediction Models through Statistically-Guided Geo-Prototyping

1 code implementation19 Dec 2024 Bang An, Xun Zhou, Zirui Zhou, Ronilo Ragodos, Zenglin Xu, Jun Luo

Interpretation of the spatiotemporal forecasting mechanism is, however, challenging due to the complexity of multi-source spatiotemporal features, the non-intuitive nature of spatiotemporal patterns for non-expert users, and the presence of spatial heterogeneity in the data.

LISA: Learning-Integrated Space Partitioning Framework for Traffic Accident Forecasting on Heterogeneous Spatiotemporal Data

1 code implementation19 Dec 2024 Bang An, Xun Zhou, Amin Vahedian, Nick Street, Jinping Guan, Jun Luo

Traffic accident forecasting is an important task for intelligent transportation management and emergency response systems.

Hierarchical Split Federated Learning: Convergence Analysis and System Optimization

no code implementations10 Dec 2024 Zheng Lin, Wei Wei, Zhe Chen, Chan-Tong Lam, Xianhao Chen, Yue Gao, Jun Luo

To tackle this issue, split federated learning (SFL) has emerged as an FL framework with reduced workload on edge devices via model splitting; it has received extensive attention from the research community in recent years.

Federated Learning

Sensitivity Analysis on Policy-Augmented Graphical Hybrid Models with Shapley Value Estimation

no code implementations20 Nov 2024 Junkai Zhao, Wei Xie, Jun Luo

Driven by the critical challenges in biomanufacturing, including high complexity and high uncertainty, we propose a comprehensive and computationally efficient sensitivity analysis framework for general nonlinear policy-augmented knowledge graphical (pKG) hybrid models that characterize the risk- and science-based understandings of underlying stochastic decision process mechanisms.

Radar and Camera Fusion for Object Detection and Tracking: A Comprehensive Survey

no code implementations24 Oct 2024 Kun Shi, Shibo He, Zhenyu Shi, Anjun Chen, Zehui Xiong, Jiming Chen, Jun Luo

Furthermore, we provide a detailed taxonomy covering the research topics related to object detection and tracking in the context of radar and camera technologies. Finally, we discuss the emerging perspectives in the field of radar-camera fusion perception and highlight the potential areas for future research.

Object object-detection +1

Quasi-Medial Distance Field (Q-MDF): A Robust Method for Approximating and Discretizing Neural Medial Axis

no code implementations23 Oct 2024 Jiayi Kong, Chen Zong, Jun Luo, Shiqing Xin, Fei Hou, Hanqing Jiang, Chen Qian, Ying He

The medial axis, a lower-dimensional shape descriptor, plays an important role in the field of digital geometry processing.

Mixture of Experts Made Personalized: Federated Prompt Learning for Vision-Language Models

no code implementations14 Oct 2024 Jun Luo, Chen Chen, Shandong Wu

While justifiable for training full-sized models under federated settings, in this work, we argue that this paradigm is ill-suited for lightweight prompts.

Federated Learning

t-READi: Transformer-Powered Robust and Efficient Multimodal Inference for Autonomous Driving

no code implementations13 Oct 2024 Pengfei Hu, Yuhang Qian, Tianyue Zheng, Ang Li, Zhe Chen, Yue Gao, Xiuzhen Cheng, Jun Luo

Given the wide adoption of multimodal sensors (e. g., camera, lidar, radar) by autonomous vehicles (AVs), deep analytics to fuse their outputs for a robust perception become imperative.

Autonomous Driving Contrastive Learning

Large Model for Small Data: Foundation Model for Cross-Modal RF Human Activity Recognition

no code implementations13 Oct 2024 Yuxuan Weng, Guoquan Wu, Tianyue Zheng, Yanbing Yang, Jun Luo

Radio-Frequency (RF)-based Human Activity Recognition (HAR) rises as a promising solution for applications unamenable to techniques requiring computer visions.

Few-Shot Learning Human Activity Recognition +3

Shaking the Fake: Detecting Deepfake Videos in Real Time via Active Probes

no code implementations17 Sep 2024 Zhixin Xie, Jun Luo

Consequently, SFake determines whether the face is swapped by deepfake based on the consistency of the facial area with the probe pattern.

DeepFake Detection Face Swapping +1

3D Priors-Guided Diffusion for Blind Face Restoration

1 code implementation2 Sep 2024 Xiaobin Lu, Xiaobin Hu, Jun Luo, Ben Zhu, Yaping Ruan, Wenqi Ren

To inherit the exceptional realism generative ability of the diffusion model and also constrained by the identity-aware fidelity, we propose a novel diffusion-based framework by embedding the 3D facial priors as structure and identity constraints into a denoising diffusion process.

Blind Face Restoration Denoising +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

Efficient Beamforming Feedback Information-Based Wi-Fi Sensing by Feature Selection

no code implementations9 Jun 2024 Xin Li, Jingzhi Hu, Jun Luo

Wi-Fi sensing leveraging plain-text beamforming feedback information (BFI) in multiple-input-multiple-output (MIMO) systems attracts increasing attention.

feature selection

Cross-domain Learning Framework for Tracking Users in RIS-aided Multi-band ISAC Systems with Sparse Labeled Data

no code implementations10 May 2024 Jingzhi Hu, Dusit Niyato, Jun Luo

Integrated sensing and communications (ISAC) is pivotal for 6G communications and is boosted by the rapid development of reconfigurable intelligent surfaces (RISs).

A Deep Q-Network Based on Radial Basis Functions for Multi-Echelon Inventory Management

no code implementations29 Jan 2024 Liqiang Cheng, Jun Luo, Weiwei Fan, Yidong Zhang, Yuan Li

This paper addresses a multi-echelon inventory management problem with a complex network topology where deriving optimal ordering decisions is difficult.

Deep Reinforcement Learning Management

MST: Adaptive Multi-Scale Tokens Guided Interactive Segmentation

1 code implementation9 Jan 2024 Long Xu, Shanghong Li, Yongquan Chen, Jun Luo, Shiwu Lai

To address the target scale variation issue in interactive segmentation, a novel multi-scale token adaptation algorithm is proposed.

Benchmarking Interactive Segmentation +1

Do Not DeepFake Me: Privacy-Preserving Neural 3D Head Reconstruction Without Sensitive Images

no code implementations7 Dec 2023 Jiayi Kong, Xurui Song, Shuo Huai, Baixin Xu, Jun Luo, Ying He

While 3D head reconstruction is widely used for modeling, existing neural reconstruction approaches rely on high-resolution multi-view images, posing notable privacy issues.

Face Swapping Privacy Preserving

Ask Language Model to Clean Your Noisy Translation Data

no code implementations20 Oct 2023 Quinten Bolding, Baohao Liao, Brandon James Denis, Jun Luo, Christof Monz

Lastly, experiments on C-MTNT showcased its effectiveness in evaluating the robustness of NMT models, highlighting the potential of advanced language models for data cleaning and emphasizing C-MTNT as a valuable resource.

Language Modeling Language Modelling +3

HoloFed: Environment-Adaptive Positioning via Multi-band Reconfigurable Holographic Surfaces and Federated Learning

no code implementations10 Oct 2023 Jingzhi Hu, Zhe Chen, Tianyue Zheng, Robert Schober, Jun Luo

Our simulation results confirm that HoloFed achieves a 57% lower positioning error variance compared to a beam-scanning baseline and can effectively adapt to diverse environments.

Federated Learning Position +2

OCHID-Fi: Occlusion-Robust Hand Pose Estimation in 3D via RF-Vision

1 code implementation ICCV 2023 Shujie Zhang, Tianyue Zheng, Zhe Chen, Jingzhi Hu, Abdelwahed Khamis, Jiajun Liu, Jun Luo

To overcome the challenge in labeling RF imaging given its human incomprehensible nature, OCHID-Fi employs a cross-modality and cross-domain training process.

3D Pose Estimation Hand Pose Estimation

FedPerfix: Towards Partial Model Personalization of Vision Transformers in Federated Learning

1 code implementation ICCV 2023 Guangyu Sun, Matias Mendieta, Jun Luo, Shandong Wu, Chen Chen

Personalized Federated Learning (PFL) represents a promising solution for decentralized learning in heterogeneous data environments.

Personalized Federated Learning

EFLNet: Enhancing Feature Learning for Infrared Small Target Detection

1 code implementation27 Jul 2023 Bo Yang, Xinyu Zhang, Jian Zhang, Jun Luo, Mingliang Zhou, Yangjun Pi

To address this problem, we propose a new adaptive threshold focal loss (ATFL) function that decouples the target and the background, and utilizes the adaptive mechanism to adjust the loss weight to force the model to allocate more attention to target features.

regression

Multi-band Reconfigurable Holographic Surface Based ISAC Systems: Design and Optimization

no code implementations28 Mar 2023 Jingzhi Hu, Zhe Chen, Jun Luo

Metamaterial-based reconfigurable holographic surfaces (RHSs) have been proposed as novel cost-efficient antenna arrays, which are promising for improving the positioning and communication performance of integrated sensing and communications (ISAC) systems.

On Hierarchical Multi-Resolution Graph Generative Models

no code implementations6 Mar 2023 Mahdi Karami, Jun Luo

In real world domains, most graphs naturally exhibit a hierarchical structure.

Graph Generation

AutoFed: Heterogeneity-Aware Federated Multimodal Learning for Robust Autonomous Driving

no code implementations17 Feb 2023 Tianyue Zheng, Ang Li, Zhe Chen, Hongbo Wang, Jun Luo

Object detection with on-board sensors (e. g., lidar, radar, and camera) play a crucial role in autonomous driving (AD), and these sensors complement each other in modalities.

Autonomous Driving Federated Learning +3

Human not in the loop: objective sample difficulty measures for Curriculum Learning

no code implementations2 Feb 2023 Zhengbo Zhou, Jun Luo, Dooman Arefan, Gene Kitamura, Shandong Wu

Curriculum learning is a learning method that trains models in a meaningful order from easier to harder samples.

Classification

A Simple Decentralized Cross-Entropy Method

1 code implementation16 Dec 2022 Zichen Zhang, Jun Jin, Martin Jagersand, Jun Luo, Dale Schuurmans

To tackle this issue, we propose Decentralized CEM (DecentCEM), a simple but effective improvement over classical CEM, by using an ensemble of CEM instances running independently from one another, and each performing a local improvement of its own sampling distribution.

continuous-control Continuous Control +1

PGFed: Personalize Each Client's Global Objective for Federated Learning

1 code implementation ICCV 2023 Jun Luo, Matias Mendieta, Chen Chen, Shandong Wu

Based on our observation, in this work, we propose Personalized Global Federated Learning (PGFed), a novel personalized FL framework that enables each client to personalize its own global objective by explicitly and adaptively aggregating the empirical risks of itself and other clients.

Personalized Federated Learning Transfer Learning

Label Alignment Regularization for Distribution Shift

1 code implementation27 Nov 2022 Ehsan Imani, Guojun Zhang, Runjia Li, Jun Luo, Pascal Poupart, Philip H. S. Torr, Yangchen Pan

Recent work has highlighted the label alignment property (LAP) in supervised learning, where the vector of all labels in the dataset is mostly in the span of the top few singular vectors of the data matrix.

Representation Learning Sentiment Analysis +1

NeurIPS 2022 Competition: Driving SMARTS

no code implementations14 Nov 2022 Amir Rasouli, Randy Goebel, Matthew E. Taylor, Iuliia Kotseruba, Soheil Alizadeh, Tianpei Yang, Montgomery Alban, Florian Shkurti, Yuzheng Zhuang, Adam Scibior, Kasra Rezaee, Animesh Garg, David Meger, Jun Luo, Liam Paull, Weinan Zhang, Xinyu Wang, Xi Chen

The proposed competition supports methodologically diverse solutions, such as reinforcement learning (RL) and offline learning methods, trained on a combination of naturalistic AD data and open-source simulation platform SMARTS.

Autonomous Driving Reinforcement Learning (RL)

Build generally reusable agent-environment interaction models

no code implementations13 Nov 2022 Jun Jin, Hongming Zhang, Jun Luo

This paper tackles the problem of how to pre-train a model and make it generally reusable backbones for downstream task learning.

Auxiliary task discovery through generate-and-test

no code implementations25 Oct 2022 Banafsheh Rafiee, Sina Ghiassian, Jun Jin, Richard Sutton, Jun Luo, Adam White

In this paper, we explore an approach to auxiliary task discovery in reinforcement learning based on ideas from representation learning.

Meta-Learning Representation Learning

Memory-efficient Reinforcement Learning with Value-based Knowledge Consolidation

1 code implementation22 May 2022 Qingfeng Lan, Yangchen Pan, Jun Luo, A. Rupam Mahmood

The experience replay buffer, a standard component in deep reinforcement learning, is often used to reduce forgetting and improve sample efficiency by storing experiences in a large buffer and using them for training later.

Deep Reinforcement Learning reinforcement-learning +1

Reinforcement Teaching

no code implementations25 Apr 2022 Calarina Muslimani, Alex Lewandowski, Dale Schuurmans, Matthew E. Taylor, Jun Luo

Meta-learning methods learn about machine learning algorithms and improve them so that they learn more quickly.

Meta-Learning

What makes useful auxiliary tasks in reinforcement learning: investigating the effect of the target policy

no code implementations1 Apr 2022 Banafsheh Rafiee, Jun Jin, Jun Luo, Adam White

Our focus on the role of the target policy of the auxiliary tasks is motivated by the fact that the target policy determines the behavior about which the agent wants to make a prediction and the state-action distribution that the agent is trained on, which further affects the main task learning.

Representation Learning

Drawing Inductor Layout with a Reinforcement Learning Agent: Method and Application for VCO Inductors

no code implementations23 Feb 2022 Cameron Haigh, Zichen Zhang, Negar Hassanpour, Khurram Javed, Yingying Fu, Shayan Shahramian, Shawn Zhang, Jun Luo

In light of the need to tweak the target specifications throughout the circuit design cycle, we also develop a variant in which the agent can learn to quickly adapt to draw new inductors for moderately different target specifications.

Reinforcement Learning (RL)

Adv-4-Adv: Thwarting Changing Adversarial Perturbations via Adversarial Domain Adaptation

no code implementations1 Dec 2021 Tianyue Zheng, Zhe Chen, Shuya Ding, Chao Cai, Jun Luo

Whereas adversarial training can be useful against specific adversarial perturbations, they have also proven ineffective in generalizing towards attacks deviating from those used for training.

Domain Adaptation

MoRe-Fi: Motion-robust and Fine-grained Respiration Monitoring via Deep-Learning UWB Radar

no code implementations16 Nov 2021 Tianyue Zheng, Zhe Chen, Shujie Zhang, Chao Cai, Jun Luo

Crucial for healthcare and biomedical applications, respiration monitoring often employs wearable sensors in practice, causing inconvenience due to their direct contact with human bodies.

Data Augmentation Decoder

RF-Net: a Unified Meta-learning Framework for RF-enabled One-shot Human Activity Recognition

1 code implementation29 Oct 2021 Shuya Ding, Zhe Chen, Tianyue Zheng, Jun Luo

Radio-Frequency (RF) based device-free Human Activity Recognition (HAR) rises as a promising solution for many applications.

Human Activity Recognition Meta-Learning

Enhancing RF Sensing with Deep Learning: A Layered Approach

no code implementations28 Oct 2021 Tianyue Zheng, Zhe Chen, Shuya Ding, Jun Luo

To better understand this potential, this article takes a layered approach to summarize RF sensing enabled by deep learning.

Deep Learning

V2iFi: in-Vehicle Vital Sign Monitoring via Compact RF Sensing

no code implementations28 Oct 2021 Tianyue Zheng, Zhe Chen, Chao Cai, Jun Luo, Xu Zhang

Given the significant amount of time people spend in vehicles, health issues under driving condition have become a major concern.

Heart Rate Variability

SiWa: See into Walls via Deep UWB Radar

no code implementations27 Oct 2021 Tianyue Zheng, Zhe Chen, Jun Luo, Lin Ke, Chaoyang Zhao, Yaowen Yang

To this end, we equip SiWa with a deep learning pipeline to parse the rich sensory data.

Deep Curriculum Learning in Task Space for Multi-Class Based Mammography Diagnosis

no code implementations21 Oct 2021 Jun Luo, Dooman Arefan, Margarita Zuley, Jules Sumkin, Shandong Wu

In this work, we propose an end-to-end Curriculum Learning (CL) strategy in task space for classifying the three categories of Full-Field Digital Mammography (FFDM), namely Malignant, Negative, and False recall.

Knowledge-Guided Multiview Deep Curriculum Learning for Elbow Fracture Classification

1 code implementation20 Oct 2021 Jun Luo, Gene Kitamura, Dooman Arefan, Emine Doganay, Ashok Panigrahy, Shandong Wu

We evaluate our method through extensive experiments on a classification task of elbow fracture with a dataset of 1, 964 images.

Classification Transfer Learning

Medical Knowledge-Guided Deep Curriculum Learning for Elbow Fracture Diagnosis from X-Ray Images

no code implementations20 Oct 2021 Jun Luo, Gene Kitamura, Emine Doganay, Dooman Arefan, Shandong Wu

We design an experiment with 1865 elbow X-ray images for a fracture/normal binary classification task and compare our proposed method to a baseline method and a previous method using multiple metrics.

Binary Classification Deep Learning

FedSLD: Federated Learning with Shared Label Distribution for Medical Image Classification

no code implementations15 Oct 2021 Jun Luo, Shandong Wu

Machine learning in medical research, by nature, needs careful attention on obeying the regulations of data privacy, making it difficult to train a machine learning model over gathered data from different medical centers.

BIG-bench Machine Learning Federated Learning +2

Adapt to Adaptation: Learning Personalization for Cross-Silo Federated Learning

2 code implementations15 Oct 2021 Jun Luo, Shandong Wu

We also introduce a method to flexibly control the focus of training APPLE between global and local objectives.

Federated Learning

Adapt to Adaptation: Learning to Personalize for Cross-Silo Federated Learning

no code implementations29 Sep 2021 Jun Luo, Shandong Wu

We also introduce a method to flexibly control the focus of training APPLE between global and local objectives.

Federated Learning

Decentralized Cross-Entropy Method for Model-Based Reinforcement Learning

no code implementations29 Sep 2021 Zichen Zhang, Jun Jin, Martin Jagersand, Jun Luo, Dale Schuurmans

Further, we extend the decentralized approach to sequential decision-making problems where we show in 13 continuous control benchmark environments that it matches or outperforms the state-of-the-art CEM algorithms in most cases, under the same budget of the total number of samples for planning.

continuous-control Continuous Control +6

Variational Component Decoder for Source Extraction from Nonlinear Mixture

no code implementations29 Sep 2021 Shujie Zhang, Tianyue Zheng, Zhe Chen, Jun Luo, Sinno Pan

In many practical scenarios of signal extraction from a nonlinear mixture, only one (signal) source is intended to be extracted.

blind source separation Decoder +3

Disentangling Generalization in Reinforcement Learning

no code implementations29 Sep 2021 Alex Lewandowski, Dale Schuurmans, Jun Luo

The resulting environment, while simple, necessitates function approximation for state abstraction and provides ground-truth labels for optimal policies and value functions.

reinforcement-learning Reinforcement Learning +1

Cooperative Multi-Agent Transfer Learning with Level-Adaptive Credit Assignment

no code implementations1 Jun 2021 Tianze Zhou, Fubiao Zhang, Kun Shao, Kai Li, Wenhan Huang, Jun Luo, Weixun Wang, Yaodong Yang, Hangyu Mao, Bin Wang, Dong Li, Wulong Liu, Jianye Hao

In addition, we use a novel agent network named Population Invariant agent with Transformer (PIT) to realize the coordination transfer in more varieties of scenarios.

Management Multi-agent Reinforcement Learning +3

Probing the Effect of Selection Bias on Generalization: A Thought Experiment

no code implementations20 May 2021 John K. Tsotsos, Jun Luo

The point of the thought experiment is not to demonstrate problems with all learned systems.

Epidemiology Selection bias

PURE: Passive mUlti-peRson idEntification via Deep Footstep Separation and Recognition

no code implementations15 Apr 2021 Chao Cai, Ruinan Jin, Peng Wang, Liyuan Ye, Hongbo Jiang, Jun Luo

Recently, \textit{passive behavioral biometrics} (e. g., gesture or footstep) have become promising complements to conventional user identification methods (e. g., face or fingerprint) under special situations, yet existing sensing technologies require lengthy measurement traces and cannot identify multiple users at the same time.

Person Identification User Identification

Self-Supervised Simultaneous Multi-Step Prediction of Road Dynamics and Cost Map

no code implementations CVPR 2021 Elmira Amirloo, Mohsen Rohani, Ershad Banijamali, Jun Luo, Pascal Poupart

While supervised learning is widely used for perception modules in conventional autonomous driving solutions, scalability is hindered by the huge amount of data labeling needed.

Autonomous Driving Motion Planning

Open-set Intersection Intention Prediction for Autonomous Driving

no code implementations27 Feb 2021 Fei Li, Xiangxu Li, Jun Luo, Shiwei Fan, Hongbo Zhang

We capture map-centric features that correspond to intersection structures under a spatial-temporal graph representation, and use two MAAMs (mutually auxiliary attention module) that cover respectively lane-level and exitlevel intentions to predict a target that best matches intersection elements in map-centric feature space.

Autonomous Driving Prediction

CoachNet: An Adversarial Sampling Approach for Reinforcement Learning

no code implementations7 Jan 2021 Elmira Amirloo Abolfathi, Jun Luo, Peyman Yadmellat, Kasra Rezaee

Despite the recent successes of reinforcement learning in games and robotics, it is yet to become broadly practical.

continuous-control Continuous Control +3

LISPR: An Options Framework for Policy Reuse with Reinforcement Learning

no code implementations29 Dec 2020 Daniel Graves, Jun Jin, Jun Luo

Our approach facilitates the learning of new policies by (1) maximizing the target MDP reward with the help of the black-box option, and (2) returning the agent to states in the learned initiation set of the black-box option where it is already optimal.

Continual Learning reinforcement-learning +2

PePScenes: A Novel Dataset and Baseline for Pedestrian Action Prediction in 3D

no code implementations14 Dec 2020 Amir Rasouli, Tiffany Yau, Peter Lakner, Saber Malekmohammadi, Mohsen Rohani, Jun Luo

To this end, we propose a new pedestrian action prediction dataset created by adding per-frame 2D/3D bounding box and behavioral annotations to the popular autonomous driving dataset, nuScenes.

Autonomous Driving Motion Planning +2

Bifold and Semantic Reasoning for Pedestrian Behavior Prediction

no code implementations ICCV 2021 Amir Rasouli, Mohsen Rohani, Jun Luo

Our method benefits from 1) a bifold encoding approach where different data modalities are processed independently allowing them to develop their own representations, and jointly to produce a representation for all modalities using shared parameters; 2) a novel interaction modeling technique that relies on categorical semantic parsing of the scenes to capture interactions between target pedestrians and their surroundings; and 3) a bifold prediction mechanism that uses both independent and shared decoding of multimodal representations.

Prediction Semantic Parsing

Graph-SIM: A Graph-based Spatiotemporal Interaction Modelling for Pedestrian Action Prediction

no code implementations3 Dec 2020 Tiffany Yau, Saber Malekmohammadi, Amir Rasouli, Peter Lakner, Mohsen Rohani, Jun Luo

2) We introduce a new dataset that provides 3D bounding box and pedestrian behavioural annotations for the existing nuScenes dataset.

Autonomous Vehicles Clustering

Multi-Modal Hybrid Architecture for Pedestrian Action Prediction

no code implementations16 Nov 2020 Amir Rasouli, Tiffany Yau, Mohsen Rohani, Jun Luo

Pedestrian behavior prediction is one of the major challenges for intelligent driving systems in urban environments.

Prediction

Offline Learning of Counterfactual Predictions for Real-World Robotic Reinforcement Learning

no code implementations11 Nov 2020 Jun Jin, Daniel Graves, Cameron Haigh, Jun Luo, Martin Jagersand

We consider real-world reinforcement learning (RL) of robotic manipulation tasks that involve both visuomotor skills and contact-rich skills.

counterfactual reinforcement-learning +2

No Perfect Outdoors: Towards A Deep Profiling of GNSS-based Location Contexts

no code implementations28 Oct 2020 Feng Li, Jin Wang, Jun Luo

On one hand, we offer a more fine-grained semantic classification than binary indoor-outdoor detection.

Networking and Internet Architecture

Affordance as general value function: A computational model

no code implementations27 Oct 2020 Daniel Graves, Johannes Günther, Jun Luo

General value functions (GVFs) in the reinforcement learning (RL) literature are long-term predictive summaries of the outcomes of agents following specific policies in the environment.

Autonomous Driving model +1

Review on Ranking and Selection: A New Perspective

1 code implementation1 Aug 2020 L. Jeff Hong, Weiwei Fan, Jun Luo

In this paper, we briefly review the development of ranking-and-selection (R&S) in the past 70 years, especially the theoretical achievements and practical applications in the last 20 years.

Optimization and Control Methodology

Understanding and Mitigating the Limitations of Prioritized Experience Replay

2 code implementations19 Jul 2020 Yangchen Pan, Jincheng Mei, Amir-Massoud Farahmand, Martha White, Hengshuai Yao, Mohsen Rohani, Jun Luo

Prioritized Experience Replay (ER) has been empirically shown to improve sample efficiency across many domains and attracted great attention; however, there is little theoretical understanding of why such prioritized sampling helps and its limitations.

Autonomous Driving continuous-control +2

Enhancing Intrinsic Adversarial Robustness via Feature Pyramid Decoder

1 code implementation CVPR 2020 Guanlin Li, Shuya Ding, Jun Luo, Chang Liu

Whereas adversarial training is employed as the main defence strategy against specific adversarial samples, it has limited generalization capability and incurs excessive time complexity.

Adversarial Robustness Decoder +3

Neighborhood Cognition Consistent Multi-Agent Reinforcement Learning

no code implementations3 Dec 2019 Hangyu Mao, Wulong Liu, Jianye Hao, Jun Luo, Dong Li, Zhengchao Zhang, Jun Wang, Zhen Xiao

Social psychology and real experiences show that cognitive consistency plays an important role to keep human society in order: if people have a more consistent cognition about their environments, they are more likely to achieve better cooperation.

Multi-agent Reinforcement Learning Q-Learning +3

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 Sequential Decision Making

Adaptive Hierarchical Down-Sampling for Point Cloud Classification

no code implementations CVPR 2020 Ehsan Nezhadarya, Ehsan Taghavi, Ryan Razani, Bingbing Liu, Jun Luo

While several convolution-like operators have recently been proposed for extracting features out of point clouds, down-sampling an unordered point cloud in a deep neural network has not been rigorously studied.

Classification General Classification +1

Ubiquitous Acoustic Sensing on Commodity IoT Devices: A Survey

no code implementations11 Jan 2019 Chao Cai, Rong Zheng, Jun Luo

This framework encompasses three layers, i. e., physical layer, core technique layer, and application layer.

Survey

Construction of all-in-focus images assisted by depth sensing

no code implementations5 Jun 2018 Hang Liu, Hengyu Li, Jun Luo, Shaorong Xie, Yu Sun

A graph-based segmentation algorithm is used to segment the depth map from the depth sensor, and the segmented regions are used to guide a focus algorithm to locate in-focus image blocks from among multi-focus source images to construct the reference all-in-focus image.

All Multi Focus Image Fusion

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