Search Results for author: Umar Islambekov

Found 7 papers, 4 papers with code

Explaining the Power of Topological Data Analysis in Graph Machine Learning

1 code implementation8 Jan 2024 Funmilola Mary Taiwo, Umar Islambekov, Cuneyt Gurcan Akcora

However, claims regarding the power and usefulness of TDA have only been partially tested in application domains where TDA-based models are compared to other graph machine learning approaches, such as graph neural networks.

Topological Data Analysis

Vector Summaries of Persistence Diagrams for Permutation-based Hypothesis Testing

no code implementations9 Jun 2023 Umar Islambekov, Hasani Pathirana

In this context, one of the earliest works on hypothesis testing focuses on the two-group permutation-based approach where the associated loss function is defined in terms of within-group pairwise bottleneck or Wasserstein distances between persistence diagrams (Robinson and Turner, 2017).

Topological Data Analysis

A fast topological approach for predicting anomalies in time-varying graphs

1 code implementation11 May 2023 Umar Islambekov, Hasani Pathirana, Omid Khormali, Cuneyt Akcora, Ekaterina Smirnova

In the past decade, a persistence diagram (PD) from topological data analysis (TDA) has become a popular descriptor of shape of data with a well-defined distance between points.

Change Point Detection Topological Data Analysis

Dissecting Ethereum Blockchain Analytics: What We Learn from Topology and Geometry of Ethereum Graph

1 code implementation20 Dec 2019 Yitao Li, Umar Islambekov, Cuneyt Akcora, Ekaterina Smirnova, Yulia R. Gel, Murat Kantarcioglu

Blockchain technology and, in particular, blockchain-based cryptocurrencies offer us information that has never been seen before in the financial world.

Topological Data Analysis

Harnessing the power of Topological Data Analysis to detect change points in time series

1 code implementation28 Oct 2019 Umar Islambekov, Monisha Yuvaraj, Yulia R. Gel

While the applications of topological data analysis to change point detection are potentially very broad, in this paper we primarily focus on integrating topological concepts with the existing nonparametric methods for change point detection.

Change Point Detection Time Series +2

Unsupervised Space-Time Clustering using Persistent Homology

no code implementations25 Oct 2019 Umar Islambekov, Yulia Gel

This paper presents a new clustering algorithm for space-time data based on the concepts of topological data analysis and in particular, persistent homology.

Clustering Topological Data Analysis

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