10 citations · 22 across the 6 of their papers we have counts for
4 papers · 1 filter
Anomaly Detection on IT Operation Series via Online Matrix Profile
Shi-Ying Lan, Run-Qing Chen, Wan-Lei Zhao
Anomaly detection on time series is a fundamental task in monitoring the Key Performance Indicators (KPIs) of IT systems. Many of the existing approaches in the literature show goo…
k-sums: another side of k-means
Wan-Lei Zhao, Run-Qing Chen, Hui Ye +1
In this paper, the decades-old clustering method k-means is revisited. The original distortion minimization model of k-means is addressed by a pure stochastic minimization procedur…
A Joint Model for IT Operation Series Prediction and Anomaly Detection
Run-Qing Chen, Guang-Hui Shi, Wan-Lei Zhao +1
Status prediction and anomaly detection are two fundamental tasks in automatic IT systems monitoring. In this paper, a joint model Predictor & Anomaly Detector (PAD) is proposed to…
Fast k-means based on KNN Graph
Cheng-Hao Deng, Wan-Lei Zhao
In the era of big data, k-means clustering has been widely adopted as a basic processing tool in various contexts. However, its computational cost could be prohibitively high as th…