Search Results for author: Kai Wu

Found 44 papers, 8 papers with code

HCPM: Hierarchical Candidates Pruning for Efficient Detector-Free Matching

no code implementations19 Mar 2024 Ying Chen, Yong liu, Kai Wu, Qiang Nie, Shang Xu, Huifang Ma, Bing Wang, Chengjie Wang

Deep learning-based image matching methods play a crucial role in computer vision, yet they often suffer from substantial computational demands.

Tuning-Free Image Customization with Image and Text Guidance

no code implementations19 Mar 2024 Pengzhi Li, Qiang Nie, Ying Chen, Xi Jiang, Kai Wu, Yuhuan Lin, Yong liu, Jinlong Peng, Chengjie Wang, Feng Zheng

To our knowledge, this is the first tuning-free method that concurrently utilizes text and image guidance for image customization in specific regions.

Denoising Image Generation

Unsupervised Continual Anomaly Detection with Contrastively-learned Prompt

1 code implementation2 Jan 2024 Jiaqi Liu, Kai Wu, Qiang Nie, Ying Chen, Bin-Bin Gao, Yong liu, Jinbao Wang, Chengjie Wang, Feng Zheng

Unsupervised Anomaly Detection (UAD) with incremental training is crucial in industrial manufacturing, as unpredictable defects make obtaining sufficient labeled data infeasible.

continual anomaly detection Continual Learning +2

Signed Graph Neural Ordinary Differential Equation for Modeling Continuous-time Dynamics

1 code implementation18 Dec 2023 Lanlan Chen, Kai Wu, Jian Lou, Jing Liu

Modeling continuous-time dynamics constitutes a foundational challenge, and uncovering inter-component correlations within complex systems holds promise for enhancing the efficacy of dynamic modeling.

Active Noise Control Portable Device Design

no code implementations1 Nov 2023 Kai Wu, YuanYuan Chen

Then the noise will be sent to an electronic control system to process the noise, which will generate a reverse phase frequency signal to counteract the disturbance.

EMOFM: Ensemble MLP mOdel with Feature-based Mixers for Click-Through Rate Prediction

no code implementations6 Oct 2023 Yujian Betterest Li, Kai Wu

WARNING: The comparison might not be fair enough since the proposed method is designed for this data in particular while compared methods are not.

Click-Through Rate Prediction

SPELL: Semantic Prompt Evolution based on a LLM

no code implementations2 Oct 2023 Yujian Betterest Li, Kai Wu

Prompt engineering is a new paradigm for enhancing the performance of trained neural network models.

Prompt Engineering

Model-agnostic network inference enhancement from noisy measurements via curriculum learning

1 code implementation5 Sep 2023 Kai Wu, Yuanyuan Li, Jing Liu

Noise is a pervasive element within real-world measurement data, significantly undermining the performance of network inference models.

A Unified Framework for Online Data-Driven Predictive Control with Robust Safety Guarantees

no code implementations29 Jun 2023 Amin Vahidi-Moghaddam, Kaian Chen, Kaixiang Zhang, Zhaojian Li, Yan Wang, Kai Wu

Despite great successes, model predictive control (MPC) relies on an accurate dynamical model and requires high onboard computational power, impeding its wider adoption in engineering systems, especially for nonlinear real-time systems with limited computation power.

Model Predictive Control

Pre-trained transformer for adversarial purification

no code implementations27 May 2023 Kai Wu, Yujian Betterest Li, Jian Lou, XiaoYu Zhang, Handing Wang, Jing Liu

It is frightening that deep neural networks are vulnerable and sensitive to adversarial attacks, the most common one of which for the services is evasion-based.

B2Opt: Learning to Optimize Black-box Optimization with Little Budget

no code implementations24 Apr 2023 XiaoBin Li, Kai Wu, XiaoYu Zhang, Handing Wang, Jing Liu

To achieve this, 1) drawing on the mechanism of genetic algorithm, we propose a deep neural network framework called B2Opt, which has a stronger representation of optimization strategies based on survival of the fittest; 2) B2Opt can utilize the cheap surrogate functions of the target task to guide the design of the efficient optimization strategies.

DECN: Automated Evolutionary Algorithms via Evolution Inspired Deep Convolution Network

no code implementations19 Apr 2023 Kai Wu, Penghui Liu, Jing Liu

Evolutionary algorithms (EAs) have emerged as a powerful framework for optimization, especially for black-box optimization.

Evolutionary Algorithms Meta-Learning

Transferable Deep Learning Power System Short-Term Voltage Stability Assessment with Physics-Informed Topological Feature Engineering

no code implementations13 Mar 2023 Zijian Feng, Xin Chen, Zijian Lv, Peiyuan Sun, Kai Wu

In particular, the highest accuracy reaches 99. 68\% in evaluation, which demonstrates a good knowledge transfer ability of the proposed model for power grid topology change.

Feature Engineering Transfer Learning

Practical Frequency-Hopping MIMO Joint Radar Communications: Design and Experiment

no code implementations27 Jan 2023 Jiangtao Liu, Kai Wu, Tao Su, J. Andrew Zhang

Joint radar and communications (JRC) can realize two radio frequency (RF) functions using one set of resources, greatly saving hardware, energy and spectrum for wireless systems needing both functions.

Discover governing differential equations from evolving systems

no code implementations19 Jan 2023 Yuanyuan Li, Kai Wu, Jing Liu

Our proposal is competitive in identifying the change points and discovering governing differential equations in three hybrid systems and two switching linear systems.

Higher-order Knowledge Transfer for Dynamic Community Detection with Great Changes

no code implementations28 Nov 2022 Huixin Ma, Kai Wu, Handing Wang, Jing Liu

In this way, our proposal can better keep the advantages of previous community detection results and transfer them to the next task.

Community Detection Dynamic Community Detection +1

DIICAN: Dual Time-scale State-Coupled Co-estimation of SOC, SOH and RUL for Lithium-Ion Batteries

no code implementations20 Oct 2022 Ningbo Cai, Yuwen Qin, Xin Chen, Kai Wu

A state-coupled co-estimation method named Deep Inter and Intra-Cycle Attention Network (DIICAN) is proposed in this paper to estimate SOC, SOH, and RUL, which organizes battery measurement data into the intra-cycle and inter-cycle time scales.

Management

Rethinking Dimensionality Reduction in Grid-based 3D Object Detection

no code implementations20 Sep 2022 Dihe Huang, Ying Chen, Yikang Ding, Jinli Liao, Jianlin Liu, Kai Wu, Qiang Nie, Yong liu, Chengjie Wang, Zhiheng Li

In MDRNet, the Spatial-aware Dimensionality Reduction (SDR) is designed to dynamically focus on the valuable parts of the object during voxel-to-BEV feature transformation.

3D Object Detection Cloud Detection +3

Green Joint Communications and Sensing Employing Analog Multi-Beam Antenna Arrays

no code implementations21 Aug 2022 Kai Wu, J. Andrew Zhang, Xiaojing Huang, Robert W. Heath Jr., Y. Jay Guo

Most existing JCAS designs are based on digital arrays, analog arrays with tunable phase shifters, or hybrid arrays, which are effective but are generally complicated to design and power inefficient.

Joint Communications and Sensing Employing Optimized MIMO-OFDM Signals

no code implementations21 Aug 2022 Kai Wu, J. Andrew Zhang, Zhitong Ni, Xiaojing Huang, Y. Jay Guo, Shanzhi Chen

We establish an optimization problem that modifies data symbols on sub-carriers to enhance the above-mentioned signal orthogonality.

Simultaneous Beam and User Selection for the Beamspace mmWave/THz Massive MIMO Downlink

no code implementations21 Aug 2022 Kai Wu, J. Andrew Zhang, Xiaojing Huang, Y. Jay Guo, Lajos Hanzo

We then exploit its beneficial properties for substantially simplifying the joint user and beam selection problem.

A Multi-Transformation Evolutionary Framework for Influence Maximization in Social Networks

1 code implementation7 Apr 2022 Chao Wang, Jiaxuan Zhao, Lingling Li, Licheng Jiao, Jing Liu, Kai Wu

Influence maximization is a crucial issue for mining the deep information of social networks, which aims to select a seed set from the network to maximize the number of influenced nodes.

Integration of Radar Sensing into Communications with Asynchronous Transceivers

no code implementations30 Mar 2022 J. Andrew Zhang, Kai Wu, Xiaojing Huang, Y. Jay Guo, Daqing Zhang, Robert W. Heath Jr

Clock asynchronism is a critical issue in integrating radar sensing into communication networks.

Fast and Accurate Linear Fitting for Incompletely Sampled Gaussian Function With a Long Tail

no code implementations15 Mar 2022 Kai Wu, J. Andrew Zhang, Y. Jay Guo

Fitting experiment data onto a curve is a common signal processing technique to extract data features and establish the relationship between variables.

Learning Multi-Task Gaussian Process Over Heterogeneous Input Domains

no code implementations25 Feb 2022 Haitao Liu, Kai Wu, Yew-Soon Ong, Chao Bian, Xiaomo Jiang, Xiaofang Wang

Multi-task Gaussian process (MTGP) is a well-known non-parametric Bayesian model for learning correlated tasks effectively by transferring knowledge across tasks.

Dimensionality Reduction Inductive Bias

Network Collaborator: Knowledge Transfer Between Network Reconstruction and Community Detection

1 code implementation4 Jan 2022 Kai Wu, Chao Wang, Junyuan Chen, Jing Liu

Community detection (CD) from dynamics and network reconstruction (NR) from dynamics are natural synergistic tasks that motivate the proposed evolutionary multitasking NR and CD framework, called network collaborator (NC).

Community Detection Transfer Learning

Evolutionary Multitasking AUC Optimization

1 code implementation4 Jan 2022 Chao Wang, Kai Wu, Jing Liu

Inspired by the characteristic of pairwise learning, the cheap AUC optimization task with a small-scale dataset sampled from the large-scale dataset is constructed to promote the AUC accuracy of the original, large-scale, and expensive AUC optimization task.

Binary Classification

Boost Distribution System Restoration with Emergency Communication Vehicles Considering Cyber-Physical Interdependence

no code implementations19 Nov 2021 Zhigang Ye, Chen Chen, Ruihuan Liu, Kai Wu, Zhaohong Bie, Guannan Lou, Wei Gu, Yubo Yuan

Enhancing restoration capabilities of distribution systems is one of the main strategies for resilient power systems to cope with extreme events.

OTFS-Based Joint Communication and Sensing for Future Industrial IoT

no code implementations6 Nov 2021 Kai Wu, J. Andrew Zhang, Xiaojing Huang, Y. Jay Guo

To meet the ever-increasing demands on better wireless communications for IIoT, we propose an orthogonal time-frequency space (OTFS) waveform-based joint communication and radio sensing (JCAS) scheme -- an energy-efficient solution for not only reliable communications but also high-accuracy sensing.

Integrating Low-Complexity and Flexible Sensing into Communication Systems

no code implementations9 Sep 2021 Kai Wu, J. Andrew Zhang, Xiaojing Huang, Y. Jay Guo

Extensive simulations validate the superiority of the proposed sensing framework over prior methods in terms of signal-to-IN ratios in RDMs, detecting performance and flexibility.

A Low-Complexity Method for FFT-based OFDM Sensing

no code implementations28 May 2021 Kai Wu, J. Andrew Zhang, Xiaojing Huang, Y. Jay Guo

OFDM sensing is gaining increasing popularity in wideband radar applications as well as in joint communication and radar/radio sensing (JCAS).

Frequency-Hopping MIMO Radar-Based Communications: An Overview

no code implementations19 Oct 2020 Kai Wu, J. Andrew Zhang, Xiaojing Huang, Y. Jay Guo

Enabled by the advancement in radio frequency technologies, the convergence of radar and communication systems becomes increasingly promising and is envisioned as a key feature of future 6G networks.

Waveform Design and Accurate Channel Estimation for Frequency-Hopping MIMO Radar-Based Communications

no code implementations29 Sep 2020 Kai Wu, J. Andrew Zhang, Xiaojing Huang, Y. Jay Guo, Robert W. Heath Jr

In this paper, we develop accurate methods for a single-antenna communication receiver to estimate timing offset and channel for FH-MIMO DFRC.

Enabling Joint Communication and Radar Sensing in Mobile Networks -- A Survey

no code implementations13 Jun 2020 J. Andrew Zhang, Md Lushanur Rahman, Kai Wu, Xiaojing Huang, Y. Jay Guo, Shanzhi Chen, Jinhong Yuan

We then introduce a framework of PMN, including the system platform and infrastructure, three types of sensing operations, and signals usable for sensing.

Information Retrieval Philosophy

Learning to Generate Time Series Conditioned Graphs with Generative Adversarial Nets

no code implementations3 Mar 2020 Shanchao Yang, Jing Liu, Kai Wu, Mingming Li

Differently, in this paper, we are interested in a novel problem named Time Series Conditioned Graph Generation: given an input multivariate time series, we aim to infer a target relation graph modeling the underlying interrelationships between time series with each node corresponding to each time series.

Graph Generation Time Series +1

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