1 code implementation • 29 Nov 2023 • Ijaz Ul Haq, Byung Suk Lee, Donna M. Rizzo
The surge in real-time data collection across various industries has underscored the need for advanced anomaly detection in both univariate and multivariate time series data.
no code implementations • 14 Sep 2023 • Ijaz Ul Haq, Byung Suk Lee, Donna M. Rizzo, Julia N Perdrial
The selection is based on the user's preferences regarding anomaly detection accuracy and computational cost.
2 code implementations • 21 Aug 2023 • Hwan Kim, JungHoon Kim, Byung Suk Lee, Sungsu Lim
To further efficiently exploit context information from metapath-based anomaly subgraph, we present a new framework, Metapath-based Graph Anomaly Detection (MGAD), incorporating GCN layers in both the dual-encoders and decoders to efficiently propagate context information between abnormal and normal nodes.
Graph Anomaly Detection Semi-supervised Anomaly Detection +1
no code implementations • 7 Aug 2023 • Ahmed Abdeen Hamed, Byung Suk Lee, Alessandro Crimi, Magdalena M. Misiak
Since the launch of various generative AI tools, scientists have been striving to evaluate their capabilities and contents, in the hope of establishing trust in their generative abilities.
no code implementations • 29 Sep 2022 • Hwan Kim, Byung Suk Lee, Won-Yong Shin, Sungsu Lim
Graphs are used widely to model complex systems, and detecting anomalies in a graph is an important task in the analysis of complex systems.
1 code implementation • 9 Jun 2022 • Susik Yoon, YoungJun Lee, Jae-Gil Lee, Byung Suk Lee
Online anomaly detection from a data stream is critical for the safety and security of many applications but is facing severe challenges due to complex and evolving data streams from IoT devices and cloud-based infrastructures.
no code implementations • ICLR 2022 • Yooju Shin, Susik Yoon, Sundong Kim, Hwanjun Song, Jae-Gil Lee, Byung Suk Lee
Time-series data are ubiquitous these days, but lack of the labels in time-series data is regarded as a hurdle for its broad applicability.
no code implementations • 26 Aug 2021 • Ali Javed, Donna M. Rizzo, Byung Suk Lee, Robert Gramling
We showed that for similar accuracy, the speed-up achieved for SOMTimeS and K-means was 1. 8x on average; however, rates varied between 1x and 18x depending on the dataset.
no code implementations • 20 Apr 2020 • Ali Javed, Byung Suk Lee, Dona M. Rizzo
This paper presents the first time series clustering benchmark utilizing all time series datasets currently available in the University of California Riverside (UCR) archive -- the state of the art repository of time series data.
no code implementations • 28 Nov 2019 • Ali Javed, Scott D. Hamshaw, Donna M. Rizzo, Byung Suk Lee
Additionally, using available meteorological data associated with storm events, we examine the characteristics of computational clusters of storm events in the study watersheds and identify the features driving the clustering approach.
no code implementations • 26 Aug 2015 • Saurav Acharya, Byung Suk Lee, Paul Hines
We overcome these limitations by proposing a novel event precedence model and a run-time causal inference mechanism.