Search Results for author: Boian Alexandrov

Found 7 papers, 1 papers with code

Electrical Grid Anomaly Detection via Tensor Decomposition

no code implementations12 Oct 2023 Alexander Most, Maksim Eren, Nigel Lawrence, Boian Alexandrov

We showcase that the use of statistical behavior analysis of SCADA communication with tensor decomposition improves the specificity and accuracy of identifying anomalies in electrical grid systems.

Anomaly Detection Dimensionality Reduction +2

Robust Adversarial Defense by Tensor Factorization

no code implementations3 Sep 2023 Manish Bhattarai, Mehmet Cagri Kaymak, Ryan Barron, Ben Nebgen, Kim Rasmussen, Boian Alexandrov

This study underscores the potential of integrating tensorization and low-rank decomposition as a robust defense against adversarial attacks in machine learning.

Adversarial Defense

Process Modeling, Hidden Markov Models, and Non-negative Tensor Factorization with Model Selection

no code implementations3 Oct 2022 Erik Skau, Andrew Hollis, Stephan Eidenbenz, Kim Rasmussen, Boian Alexandrov

Process monitoring allows users to gauge the involvement of an organization in an industrial process or predict the degradation or aging of machine parts in processes taking place at a remote location.

Model Selection

Distributed Out-of-Memory NMF on CPU/GPU Architectures

1 code implementation19 Feb 2022 Ismael Boureima, Manish Bhattarai, Maksim Eren, Erik Skau, Philip Romero, Stephan Eidenbenz, Boian Alexandrov

In this work, we extend NMFk by adding support for dense and sparse matrix operation on multi-node, multi-GPU systems.

Dimensionality Reduction Model Selection

Boolean Matrix Factorization via Nonnegative Auxiliary Optimization

no code implementations8 Jun 2021 Duc P. Truong, Erik Skau, Derek DeSantis, Boian Alexandrov

Instead of solving the BMF problem directly, this approach solves a nonnegative optimization problem with the constraint over an auxiliary matrix whose Boolean structure is identical to the initial Boolean data.

Distributed Non-Negative Tensor Train Decomposition

no code implementations4 Aug 2020 Manish Bhattarai, Gopinath Chennupati, Erik Skau, Raviteja Vangara, Hirsto Djidjev, Boian Alexandrov

Tensor train (TT) is a state-of-the-art tensor network introduced for factorization of high-dimensional tensors.

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