Search Results for author: Murat Kantarcioglu

Found 25 papers, 8 papers with code

Using AI Uncertainty Quantification to Improve Human Decision-Making

no code implementations19 Sep 2023 Laura R. Marusich, Jonathan Z. Bakdash, Yan Zhou, Murat Kantarcioglu

These results indicate that implementing high quality, instance-level UQ for AI may improve decision-making with real systems compared to AI predictions alone.

Decision Making Uncertainty Quantification

Interpreting GNN-based IDS Detections Using Provenance Graph Structural Features

no code implementations1 Jun 2023 Kunal Mukherjee, Joshua Wiedemeier, Tianhao Wang, Muhyun Kim, Feng Chen, Murat Kantarcioglu, Kangkook Jee

PROVEXPLAINER allowed simple DT models to achieve 95% fidelity to the GNN on program classification tasks with general graph structural features, and 99% fidelity on malware detection tasks with a task-specific feature package tailored for direct interpretation.

Decision Making Descriptive +2

Chainlet Orbits: Topological Address Embedding for the Bitcoin Blockchain

1 code implementation18 May 2023 Poupak Azad, Baris Coskunuzer, Murat Kantarcioglu, Cuneyt Gurcan Akcora

The rise of cryptocurrencies like Bitcoin, which enable transactions with a degree of pseudonymity, has led to a surge in various illicit activities, including ransomware payments and transactions on darknet markets.

Node Classification

IoTFlowGenerator: Crafting Synthetic IoT Device Traffic Flows for Cyber Deception

no code implementations1 May 2023 Joseph Bao, Murat Kantarcioglu, Yevgeniy Vorobeychik, Charles Kamhoua

Over the years, honeypots emerged as an important security tool to understand attacker intent and deceive attackers to spend time and resources.

Reduction Algorithms for Persistence Diagrams of Networks: CoralTDA and PrunIT

1 code implementation24 Nov 2022 Cuneyt Gurcan Akcora, Murat Kantarcioglu, Yulia R. Gel, Baris Coskunuzer

Second, we introduce a pruning algorithm for graphs to compute their persistence diagrams by removing the dominated vertices.

Topological Data Analysis

The Impact of Data Distribution on Fairness and Robustness in Federated Learning

1 code implementation29 Nov 2021 Mustafa Safa Ozdayi, Murat Kantarcioglu

Particularly, as the data distributions of agents differ, the accuracy of the trained models drop.

Fairness Federated Learning

Multi-concept adversarial attacks

no code implementations19 Oct 2021 Vibha Belavadi, Yan Zhou, Murat Kantarcioglu, Bhavani M. Thuraisingham

In this paper, we address the above research question by developing novel attack techniques that can simultaneously attack one set of ML models while preserving the accuracy of the other.

Image Classification

Learning Generative Deception Strategies in Combinatorial Masking Games

no code implementations23 Sep 2021 Junlin Wu, Charles Kamhoua, Murat Kantarcioglu, Yevgeniy Vorobeychik

Next, we present a novel highly scalable approach for approximately solving such games by representing the strategies of both players as neural networks.

Improving Fairness of AI Systems with Lossless De-biasing

no code implementations10 May 2021 Yan Zhou, Murat Kantarcioglu, Chris Clifton

We demonstrate the effectiveness of our technique on real datasets using a variety of fairness metrics.

Fairness

Smart Vectorizations for Single and Multiparameter Persistence

1 code implementation10 Apr 2021 Baris Coskunuzer, Cuneyt Gurcan Akcora, Ignacio Segovia Dominguez, Zhiwei Zhen, Murat Kantarcioglu, Yulia R. Gel

We derive theoretical guarantees on the stability of the new saw and multi-persistence grid functions and illustrate their applicability for graph classification tasks.

Anomaly Detection Graph Classification +1

GINN: Fast GPU-TEE Based Integrity for Neural Network Training

no code implementations1 Jan 2021 Aref Asvadishirehjini, Murat Kantarcioglu, Bradley A. Malin

In this work, we focus on the setting where the integrity of the outsourced Deep Learning (DL) model training is ensured by TEE.

Self-Driving Cars

GOAT: GPU Outsourcing of Deep Learning Training With Asynchronous Probabilistic Integrity Verification Inside Trusted Execution Environment

no code implementations17 Oct 2020 Aref Asvadishirehjini, Murat Kantarcioglu, Bradley Malin

Machine learning models based on Deep Neural Networks (DNNs) are increasingly deployed in a wide range of applications ranging from self-driving cars to COVID-19 treatment discovery.

Self-Driving Cars

Improving Accuracy of Federated Learning in Non-IID Settings

no code implementations14 Oct 2020 Mustafa Safa Ozdayi, Murat Kantarcioglu, Rishabh Iyer

Particularly, in settings where local data distributions vastly differ among agents, FL performs rather poorly with respect to the centralized training.

Federated Learning

BlockFLA: Accountable Federated Learning via Hybrid Blockchain Architecture

no code implementations14 Oct 2020 Harsh Bimal Desai, Mustafa Safa Ozdayi, Murat Kantarcioglu

It has been shown that an attacker can inject backdoors to the trained model during FL, and then can leverage the backdoor to make the model misclassify later.

Federated Learning

Does Explainable Artificial Intelligence Improve Human Decision-Making?

no code implementations19 Jun 2020 Yasmeen Alufaisan, Laura R. Marusich, Jonathan Z. Bakdash, Yan Zhou, Murat Kantarcioglu

Explainable AI provides insight into the "why" for model predictions, offering potential for users to better understand and trust a model, and to recognize and correct AI predictions that are incorrect.

Decision Making Explainable artificial intelligence

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

ChainNet: Learning on Blockchain Graphs with Topological Features

no code implementations18 Aug 2019 Nazmiye Ceren Abay, Cuneyt Gurcan Akcora, Yulia R. Gel, Umar D. Islambekov, Murat Kantarcioglu, Yahui Tian, Bhavani Thuraisingham

With emergence of blockchain technologies and the associated cryptocurrencies, such as Bitcoin, understanding network dynamics behind Blockchain graphs has become a rapidly evolving research direction.

Graph Representation Learning

BitcoinHeist: Topological Data Analysis for Ransomware Detection on the Bitcoin Blockchain

no code implementations19 Jun 2019 Cuneyt Gurcan Akcora, Yitao Li, Yulia R. Gel, Murat Kantarcioglu

To our knowledge, none of the previous approaches have employed advanced data analytics techniques to automatically detect ransomware related transactions and malicious Bitcoin addresses.

Topological Data Analysis Cryptography and Security Distributed, Parallel, and Cluster Computing

Breaking Transferability of Adversarial Samples with Randomness

no code implementations11 May 2018 Yan Zhou, Murat Kantarcioglu, Bowei Xi

We demonstrate that introducing randomness to the DNN models is sufficient to defeat adversarial attacks, given that the adversary does not have an unlimited attack budget.

Adversarial Clustering: A Grid Based Clustering Algorithm Against Active Adversaries

no code implementations13 Apr 2018 Wutao Wei, Bowei Xi, Murat Kantarcioglu

Most of the previous work focused on adversarial classification techniques, which assumed the existence of a reasonably large amount of carefully labeled data instances.

Clustering

Blockchain: A Graph Primer

2 code implementations10 Aug 2017 Cuneyt Gurcan Akcora, Yulia R. Gel, Murat Kantarcioglu

Our goal is to provide a concise but complete description of blockchain technology that is accessible to readers with no prior expertise in the field.

Computers and Society

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