Search Results for author: Dan Pei

Found 13 papers, 8 papers with code

Unsupervised Anomaly Detection via Variational Auto-Encoder for Seasonal KPIs in Web Applications

9 code implementations12 Feb 2018 Haowen Xu, Wenxiao Chen, Nengwen Zhao, Zeyan Li, Jiahao Bu, Zhihan Li, Ying Liu, Youjian Zhao, Dan Pei, Yang Feng, Jie Chen, Zhaogang Wang, Honglin Qiao

To ensure undisrupted business, large Internet companies need to closely monitor various KPIs (e. g., Page Views, number of online users, and number of orders) of its Web applications, to accurately detect anomalies and trigger timely troubleshooting/mitigation.

Unsupervised Anomaly Detection

Generic and Robust Root Cause Localization for Multi-Dimensional Data in Online Service Systems

1 code implementation5 May 2023 Zeyan Li, Junjie Chen, Yihao Chen, Chengyang Luo, Yiwei Zhao, Yongqian Sun, Kaixin Sui, Xiping Wang, Dapeng Liu, Xing Jin, Qi Wang, Dan Pei

Such attribute combinations are substantial clues to the underlying root causes and thus are called root causes of multidimensional data.

Attribute

The Search for Sparse, Robust Neural Networks

1 code implementation5 Dec 2019 Justin Cosentino, Federico Zaiter, Dan Pei, Jun Zhu

Recent work on deep neural network pruning has shown there exist sparse subnetworks that achieve equal or improved accuracy, training time, and loss using fewer network parameters when compared to their dense counterparts.

Network Pruning

Revisiting VAE for Unsupervised Time Series Anomaly Detection: A Frequency Perspective

1 code implementation5 Feb 2024 Zexin Wang, Changhua Pei, Minghua Ma, Xin Wang, Zhihan Li, Dan Pei, Saravan Rajmohan, Dongmei Zhang, QIngwei Lin, Haiming Zhang, Jianhui Li, Gaogang Xie

To ensure an accurate AD, FCVAE exploits an innovative approach to concurrently integrate both the global and local frequency features into the condition of Conditional Variational Autoencoder (CVAE) to significantly increase the accuracy of reconstructing the normal data.

Anomaly Detection Time Series +1

OpsEval: A Comprehensive IT Operations Benchmark Suite for Large Language Models

1 code implementation11 Oct 2023 Yuhe Liu, Changhua Pei, Longlong Xu, Bohan Chen, Mingze Sun, Zhirui Zhang, Yongqian Sun, Shenglin Zhang, Kun Wang, Haiming Zhang, Jianhui Li, Gaogang Xie, Xidao Wen, Xiaohui Nie, Minghua Ma, Dan Pei

Information Technology (IT) Operations (Ops), particularly Artificial Intelligence for IT Operations (AIOps), is the guarantee for maintaining the orderly and stable operation of existing information systems.

Hallucination In-Context Learning +2

Beyond Sharing: Conflict-Aware Multivariate Time Series Anomaly Detection

1 code implementation17 Aug 2023 Haotian Si, Changhua Pei, Zhihan Li, Yadong Zhao, Jingjing Li, Haiming Zhang, Zulong Diao, Jianhui Li, Gaogang Xie, Dan Pei

Massive key performance indicators (KPIs) are monitored as multivariate time series data (MTS) to ensure the reliability of the software applications and service system.

Anomaly Detection Multi-Task Learning +3

DOI: Divergence-based Out-of-Distribution Indicators via Deep Generative Models

no code implementations12 Aug 2021 Wenxiao Chen, Xiaohui Nie, Mingliang Li, Dan Pei

We propose a novel theoretical framework, DOI, for divergence-based Out-of-Distribution indicators (instead of traditional likelihood-based) in deep generative models.

Out of Distribution (OOD) Detection

A Survey of Time Series Anomaly Detection Methods in the AIOps Domain

no code implementations1 Aug 2023 Zhenyu Zhong, Qiliang Fan, Jiacheng Zhang, Minghua Ma, Shenglin Zhang, Yongqian Sun, QIngwei Lin, Yuzhi Zhang, Dan Pei

Internet-based services have seen remarkable success, generating vast amounts of monitored key performance indicators (KPIs) as univariate or multivariate time series.

Anomaly Detection Time Series +1

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