Search Results for author: Yuanqing Xia

Found 22 papers, 2 papers with code

Arena: A Patch-of-Interest ViT Inference Acceleration System for Edge-Assisted Video Analytics

no code implementations14 Apr 2024 Haosong Peng, Wei Feng, Hao Li, Yufeng Zhan, Qihua Zhou, Yuanqing Xia

In this paper, we find visual foundation models like Vision Transformer (ViT) also have a dedicated acceleration mechanism for video analytics.

Edge-computing

Structural Controllability of Switched Continuous and Discrete Time Linear Systems

no code implementations19 Sep 2023 Yuan Zhang, Yuanqing Xia

This paper explores the structural controllability of switched continuous and discrete time linear systems.

Observability Blocking for Functional Privacy of Linear Dynamic Networks

no code implementations17 Apr 2023 Yuan Zhang, Ranbo Cheng, Yuanqing Xia

This paper addresses the problem of determining the minimum set of state variables in a network that need to be blocked from direct measurements in order to protect functional privacy with respect to {\emph{any}} output matrices.

Blocking

On the Reachability and Controllability of Temporal Continuous-Time Linear Networks: A Generic Analysis

no code implementations23 Feb 2023 Yuan Zhang, Yuanqing Xia, Long Wang

This paper investigates the reachability and controllability of temporal continuous-time linear networks from a generic viewpoint, where only the zero-nonzero patterns of subsystem matrices are known.

Temporal Sequences

Encrypted Data-driven Predictive Cloud Control with Disturbance Observer

no code implementations1 Jan 2023 Qiwen Li, Runze Gao, Yuanqing Xia

In this work, a data-driven predictive cloud controller is developed based on homomorphic encryption to protect the cloud data privacy.

Privacy Preserving

Workflow-based Fast Data-driven Predictive Control with Disturbance Observer in Cloud-edge Collaborative Architecture

no code implementations16 Sep 2022 Runze Gao, Qiwen Li, Li Dai, Yufeng Zhan, Yuanqing Xia

First, a construction method for the DPC workflow is designed, to match the distributed processing environment of cloud computing.

Cloud Computing

On Polynomially Solvable Constrained Input Selections for Fixed and Switched Linear Structured Systems

no code implementations3 Apr 2022 Yuan Zhang, Yuanqing Xia, Shenyu Liu, Zhongqi Sun

In this paper, it is found that, if the input structure satisfies certain `regularizations', which are characterized by the proposed restricted total unimodulairty notion, those problems can be solvable in polynomial time via linear programming (LP) relaxations.

On real structured controllability/stabilizability/stability radius: Complexity and unified rank-relaxation based methods

no code implementations4 Jan 2022 Yuan Zhang, Yuanqing Xia, Yufeng Zhan

This paper addresses the real structured controllability, stabilizability, and stability radii (RSCR, RSSZR, and RSSR, respectively) of linear systems, which involve determining the distance (in terms of matrix norms) between a (possibly large-scale) system and its nearest uncontrollable, unstabilizable, and unstable systems, respectively, with a prescribed affine structure.

Design and Implementation of Data-driven Predictive Cloud Control System

no code implementations29 Dec 2021 Runze Gao, Yuanqing Xia, Li Dai, Zhongqi Sun

Nowadays, the rapid increases of the scale and complexity of the controlled plants bring new challenges such as computing power and storage for conventional control systems.

Cloud Computing

Fast Subspace Identification Method Based on Containerised Cloud Workflow Processing System

no code implementations29 Dec 2021 Runze Gao, Yuanqing Xia, Guan Wang, Liwen Yang, Yufeng Zhan

Subspace identification (SID) has been widely used in system identification and control fields since it can estimate system models only relying on the input and output data by reliable numerical operations such as singular value decomposition (SVD).

TFDPM: Attack detection for cyber-physical systems with diffusion probabilistic models

no code implementations20 Dec 2021 Tijin Yan, Tong Zhou, Yufeng Zhan, Yuanqing Xia

With the development of AIoT, data-driven attack detection methods for cyber-physical systems (CPSs) have attracted lots of attention.

Scheduling

Total Unimodularity and Strongly Polynomial Solvability of Constrained Minimum Input Selections for Structural Controllability: an LP-based Method

no code implementations10 Aug 2021 Yuan Zhang, Yuanqing Xia, Yufeng Zhan

Subject to a certain condition on the prescribed input configurations that contains the dedicated input one as a special case, we demonstrate that the constraint matrices of these ILPs are totally unimodular.

Partial Strong Structural Controllability

no code implementations26 Jun 2021 Yuan Zhang, Yuanqing Xia

This paper introduces a new controllability notion, termed partial strong structural controllability (PSSC), on a structured system whose entries of system matrices are either fixed zero or indeterminate, which naturally extends the conventional strong structural controllability (SSC) and bridges the gap between structural controllability and SSC.

ScoreGrad: Multivariate Probabilistic Time Series Forecasting with Continuous Energy-based Generative Models

1 code implementation18 Jun 2021 Tijin Yan, Hongwei Zhang, Tong Zhou, Yufeng Zhan, Yuanqing Xia

However, many existing works can not be widely used because of the constraints of functional form of generative models or the sensitivity to hyperparameters.

Probabilistic Time Series Forecasting Time Series +1

PTSC: a New Definition for Structural Controllability under Numerical Perturbations

no code implementations22 Mar 2021 Yuan Zhang, Yuanqing Xia

This paper proposes a novel notion for structural controllability under structured numerical perturbations, namely the perturbation-tolerant structural controllability (PTSC), on a single-input structured system whose entries can be classified into three categories: fixed zero entries, unknown generic entries whose values are fixed but unknown, and perturbed entries that can take arbitrary complex values.

Fixed-Time Cooperative Behavioral Control for Networked Autonomous Agents with Second-Order Nonlinear Dynamics

no code implementations11 Mar 2021 Ning Zhou, Xiaodong Cheng, Zhongqi Sun, Yuanqing Xia

In this paper, we investigate the fixed-time behavioral control problem for a team of second-order nonlinear agents, aiming to achieve a desired formation with collision/obstacle~avoidance.

Optimization and Control

Revisiting Graph Convolutional Network on Semi-Supervised Node Classification from an Optimization Perspective

no code implementations24 Sep 2020 Hongwei Zhang, Tijin Yan, Zenjun Xie, Yuanqing Xia, Yuan Zhang

Based on our theoretical and empirical analysis, we establish a universal theoretical framework of GCN from an optimization perspective and derive a novel convolutional kernel named GCN+ which has lower parameter amount while relieving the over-smoothing inherently.

General Classification Node Classification

Stochastic Graph Recurrent Neural Network

no code implementations1 Sep 2020 Tijin Yan, Hongwei Zhang, Zirui Li, Yuanqing Xia

In addition, to alleviate KL-vanishing problem in SGRNN, a simple and interpretable structure is proposed based on the lower bound of KL-divergence.

Representation Learning Variational Inference

A Novel Learning-based Global Path Planning Algorithm for Planetary Rovers

1 code implementation23 Nov 2018 Jiang Zhang, Yuanqing Xia, Ganghui Shen

Autonomous path planning algorithms are significant to planetary exploration rovers, since relying on commands from Earth will heavily reduce their efficiency of executing exploration missions.

A Novel Deep Neural Network Architecture for Mars Visual Navigation

no code implementations25 Aug 2018 Jiang Zhang, Yuanqing Xia, Ganghui Shen

In this paper, emerging deep learning techniques are leveraged to deal with Mars visual navigation problem.

Autonomous Navigation Visual Navigation

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