Alphacore: data depth based core decomposition

F Victor, CG Akcora, YR Gel… - Proceedings of the 27th …, 2021 - dl.acm.org
Core decomposition in networks has proven useful for evaluating the importance of nodes
and communities in a variety of application domains, ranging from biology to social networks …

Unsupervised space–time clustering using persistent homology

U Islambekov, YR Gel - Environmetrics, 2019 - Wiley Online Library
This paper presents a new clustering algorithm for space–time data based on the concepts
of topological data analysis and, in particular, persistent homology. Employing persistent …

Boreholes data analysis architecture based on clustering and prediction models for enhancing underground safety verification

N Iqbal, A Rizwan, AN Khan, R Ahmad, BW Kim… - IEEE …, 2021 - ieeexplore.ieee.org
During the last decade, substantial resources have been invested to exploit massive
amounts of boreholes data collected through groundwater extraction. Furthermore …

Data depth and core-based trend detection on blockchain transaction networks

J Zhu, A Khan, CG Akcora - Frontiers in Blockchain, 2024 - frontiersin.org
Blockchains are significantly easing trade finance, with billions of dollars worth of assets
being transacted daily. However, analyzing these networks remains challenging due to the …

Clustering directional data through depth functions

G Pandolfo, A D'ambrosio - Computational Statistics, 2023 - Springer
A new depth-based clustering procedure for directional data is proposed. Such method is
fully non-parametric and has the advantages to be flexible and applicable even in high …

Depth for Multi‐Modal Contour Ensembles

NF Chaves‐de‐Plaza, M Molenaar… - Computer Graphics …, 2024 - Wiley Online Library
The contour depth methodology enables non‐parametric summarization of contour
ensembles by extracting their representatives, confidence bands, and outliers for …

Crad: clustering with robust autocuts and depth

X Huang, YR Gel - 2017 IEEE International Conference on …, 2017 - ieeexplore.ieee.org
We develop a new density-based clustering algorithm named CRAD which is based on a
new neighbor searching function with a robust data depth as the dissimilarity measure. Our …

L1-depth revisited: A robust angle-based outlier factor in high-dimensional space

N Pham - Joint European Conference on Machine Learning and …, 2018 - Springer
Angle-based outlier detection (ABOD) has been recently emerged as an effective method to
detect outliers in high dimensions. Instead of examining neighborhoods as proximity-based …

Depth-based classification for relational data with multiple attributes

X Zhang, Y Tian, G Guan, YR Gel - Journal of Multivariate Analysis, 2021 - Elsevier
With the recent progress of data acquisition technology, classification of data exhibiting
relational dependence, from online social interactions to multi-omics studies to linkage of …

Vessel trajectory reconstruction based on functional data analysis using automatic identification system data

MH Jeong, SB Jeon, TY Lee, MK Youm, DH Lee - Applied Sciences, 2020 - mdpi.com
This study provides an automatic ship**-route construction method using functional data
analysis (FDA), which analyzes information about curves, such as multiple data points over …