Search Results for author: Yuqi Chen

Found 14 papers, 5 papers with code

ContiFormer: Continuous-Time Transformer for Irregular Time Series Modeling

1 code implementation NeurIPS 2023 Yuqi Chen, Kan Ren, Yansen Wang, Yuchen Fang, Weiwei Sun, Dongsheng Li

A wide range of experiments on both synthetic and real-world datasets have illustrated the superior modeling capacities and prediction performance of ContiFormer on irregular time series data.

Inductive Bias Irregular Time Series +1

EEGFormer: Towards Transferable and Interpretable Large-Scale EEG Foundation Model

no code implementations11 Jan 2024 Yuqi Chen, Kan Ren, Kaitao Song, Yansen Wang, Yifan Wang, Dongsheng Li, Lili Qiu

Self-supervised learning has emerged as a highly effective approach in the fields of natural language processing and computer vision.

Anomaly Detection EEG +2

Contrast and Clustering: Learning Neighborhood Pair Representation for Source-free Domain Adaptation

1 code implementation31 Jan 2023 Yuqi Chen, Xiangbin Zhu, Yonggang Li, Yingjian Li, Haojie Fang

Unsupervised domain adaptation uses source data from different distributions to solve the problem of classifying data from unlabeled target domains.

Clustering Contrastive Learning +2

RNTrajRec: Road Network Enhanced Trajectory Recovery with Spatial-Temporal Transformer

1 code implementation23 Nov 2022 Yuqi Chen, Hanyuan Zhang, Weiwei Sun, Baihua Zheng

However, many real-life trajectories are collected with low sample rate due to energy concern or other constraints. We study the task of trajectory recovery in this paper as a means for increasing the sample rate of low sample trajectories.

Graph Generation Traffic Prediction +1

A Span-level Bidirectional Network for Aspect Sentiment Triplet Extraction

1 code implementation27 Apr 2022 Yuqi Chen, Keming Chen, Xian Sun, Zequn Zhang

Aspect Sentiment Triplet Extraction (ASTE) is a new fine-grained sentiment analysis task that aims to extract triplets of aspect terms, sentiments, and opinion terms from review sentences.

Aspect Sentiment Triplet Extraction

Code Integrity Attestation for PLCs using Black Box Neural Network Predictions

no code implementations15 Jun 2021 Yuqi Chen, Christopher M. Poskitt, Jun Sun

Cyber-physical systems (CPSs) are widespread in critical domains, and significant damage can be caused if an attacker is able to modify the code of their programmable logic controllers (PLCs).

Privacy Preserving

Adversarial Attacks and Mitigation for Anomaly Detectors of Cyber-Physical Systems

no code implementations22 May 2021 Yifan Jia, Jingyi Wang, Christopher M. Poskitt, Sudipta Chattopadhyay, Jun Sun, Yuqi Chen

The threats faced by cyber-physical systems (CPSs) in critical infrastructure have motivated research into a multitude of attack detection mechanisms, including anomaly detectors based on neural network models.

Adversarial Attack

Plane Spiral OAM Mode-Group Based MIMO Communications: An Experimental Study

no code implementations11 Mar 2021 Xiaowen Xiong, Shilie Zheng, Zelin Zhu, Yuqi Chen, Hongzhe Shi, Bingchen Pan, Cheng Ren, Xianbin Yu, Xiaofeng Jin, Wei E. I. Sha, Xianmin Zhang

The mode-group (MG) superposed by specific single mode plane spiral OAM (PSOAM) waves has been proved to be a flexible beamforming method to achieve the azimuthal pattern diversity, which inherits the spiral phase distribution of conventional OAM wave.

Active Fuzzing for Testing and Securing Cyber-Physical Systems

1 code implementation28 May 2020 Yuqi Chen, Bohan Xuan, Christopher M. Poskitt, Jun Sun, Fan Zhang

Cyber-physical systems (CPSs) in critical infrastructure face a pervasive threat from attackers, motivating research into a variety of countermeasures for securing them.

Active Learning

Learning from Mutants: Using Code Mutation to Learn and Monitor Invariants of a Cyber-Physical System

no code implementations3 Jan 2018 Yuqi Chen, Christopher M. Poskitt, Jun Sun

Cyber-physical systems (CPS) consist of sensors, actuators, and controllers all communicating over a network; if any subset becomes compromised, an attacker could cause significant damage.

Anomaly Detection for a Water Treatment System Using Unsupervised Machine Learning

no code implementations15 Sep 2017 Jun Inoue, Yoriyuki Yamagata, Yuqi Chen, Christopher M. Poskitt, Jun Sun

In this paper, we propose and evaluate the application of unsupervised machine learning to anomaly detection for a Cyber-Physical System (CPS).

Anomaly Detection BIG-bench Machine Learning +2

Towards Learning and Verifying Invariants of Cyber-Physical Systems by Code Mutation

no code implementations6 Sep 2016 Yuqi Chen, Christopher M. Poskitt, Jun Sun

Cyber-physical systems (CPS), which integrate algorithmic control with physical processes, often consist of physically distributed components communicating over a network.

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