Search Results for author: Yongjun Wang

Found 11 papers, 6 papers with code

Learning Dual-arm Object Rearrangement for Cartesian Robots

no code implementations21 Feb 2024 Shishun Zhang, Qijin She, Wenhao Li, Chenyang Zhu, Yongjun Wang, Ruizhen Hu, Kai Xu

To achieve the goal, the core idea is to develop an effective object-to-arm task assignment strategy for minimizing the cumulative task execution time and maximizing the dual-arm cooperation efficiency.

Computational Efficiency Object +1

Calibrated One-class Classification for Unsupervised Time Series Anomaly Detection

1 code implementation25 Jul 2022 Hongzuo Xu, Yijie Wang, Songlei Jian, Qing Liao, Yongjun Wang, Guansong Pang

Our one-class classifier is calibrated in two ways: (1) by adaptively penalizing uncertain predictions, which helps eliminate the impact of anomaly contamination while accentuating the predictions that the one-class model is confident in, and (2) by discriminating the normal samples from native anomaly examples that are generated to simulate genuine time series abnormal behaviors on the basis of original data.

One-Class Classification One-class classifier +2

Deep Isolation Forest for Anomaly Detection

2 code implementations14 Jun 2022 Hongzuo Xu, Guansong Pang, Yijie Wang, Yongjun Wang

Isolation forest (iForest) has been emerging as arguably the most popular anomaly detector in recent years due to its general effectiveness across different benchmarks and strong scalability.

Anomaly Detection Time Series +1

Network resilience in the aging brain

no code implementations3 Feb 2022 Tao Liu, Shu Guo, Hao liu, Rui Kang, Mingyang Bai, Jiyang Jiang, Wei Wen, Xing Pan, Jun Tai, JianXin Li, Jian Cheng, Jing Jing, Zhenzhou Wu, Haijun Niu, Haogang Zhu, Zixiao Li, Yongjun Wang, Henry Brodaty, Perminder Sachdev, Daqing Li

Degeneration and adaptation are two competing sides of the same coin called resilience in the progressive processes of brain aging or diseases.

DRAM Failure Prediction in AIOps: Empirical Evaluation, Challenges and Opportunities

no code implementations30 Apr 2021 Zhiyue Wu, Hongzuo Xu, Guansong Pang, Fengyuan Yu, Yijie Wang, Songlei Jian, Yongjun Wang

DRAM failure prediction is a vital task in AIOps, which is crucial to maintain the reliability and sustainable service of large-scale data centers.

Multi-class Classification Unsupervised Anomaly Detection

Beyond Outlier Detection: Outlier Interpretation by Attention-Guided Triplet Deviation Network

1 code implementation19 Apr 2021 Hongzuo Xu, Yijie Wang, Songlei Jian, Zhenyu Huang, Ning Liu, Yongjun Wang, Fei Li

We obtain an optimal attention-guided embedding space with expanded high-level information and rich semantics, and thus outlying behaviors of the queried outlier can be better unfolded.

Anomaly Detection Outlier Interpretation

Few-Shot Website Fingerprinting Attack

no code implementations25 Jan 2021 Mantun Chen, Yongjun Wang, Zhiquan Qin, Xiatian Zhu

To address this, we introduce a model-agnostic, efficient, and Harmonious Data Augmentation (HDA) method that can improve deep WF attacking methods significantly.

Data Augmentation Cryptography and Security 68M25 K.4.1

Linearly Supporting Feature Extraction For Automated Estimation Of Stellar Atmospheric Parameters

no code implementations9 Apr 2015 Xiangru Li, Yu Lu, Georges Comte, Ali Luo, Yongheng Zhao, Yongjun Wang

On real spectra, we extracted 23 features to estimate $T_{eff}$, 62 features for log$~g$, and 68 features for [Fe/H].

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