The rise of nonnegative matrix factorization: Algorithms and applications

YT Guo, QQ Li, CS Liang - Information Systems, 2024 - Elsevier
Although nonnegative matrix factorization (NMF) is widely used, some matrix factorization
methods result in misleading results and waste of computing resources due to lack of timely …

Finding the number of latent topics with semantic non-negative matrix factorization

R Vangara, M Bhattarai, E Skau, G Chennupati… - IEEE …, 2021 - ieeexplore.ieee.org
Topic modeling, or identifying the set of topics that occur in a collection of articles, is one of
the primary objectives of text mining. One of the big challenges in topic modeling is …

Code characterization with graph convolutions and capsule networks

P Haridas, G Chennupati, N Santhi, P Romero… - IEEE …, 2020 - ieeexplore.ieee.org
We propose SiCaGCN, a learning system to predict the similarity of a given software code to
a set of codes that are permitted to run on a computational resource, such as a …

A neural network for determination of latent dimensionality in non-negative matrix factorization

BT Nebgen, R Vangara… - Machine Learning …, 2021 - iopscience.iop.org
Non-negative matrix factorization (NMF) has proven to be a powerful unsupervised learning
method for uncovering hidden features in complex and noisy data sets with applications in …

General-purpose unsupervised cyber anomaly detection via non-negative tensor factorization

ME Eren, JS Moore, E Skau, E Moore… - … Threats: Research and …, 2023 - dl.acm.org
Distinguishing malicious anomalous activities from unusual but benign activities is a
fundamental challenge for cyber defenders. Prior studies have shown that statistical user …

Semantic nonnegative matrix factorization with automatic model determination for topic modeling

R Vangara, E Skau, G Chennupati… - 2020 19th IEEE …, 2020 - ieeexplore.ieee.org
Non-negative Matrix Factorization (NMF) models the topics of a text corpus by decomposing
the matrix of term frequency-inverse document frequency (TF-IDF) representation, X, into two …

Triangle centrality

P Burkhardt - ACM Transactions on Knowledge Discovery from Data, 2024 - dl.acm.org
Triangle centrality is introduced for finding important vertices in a graph based on the
concentration of triangles surrounding each vertex. It has the distinct feature of allowing a …

Distributed non-negative tensor train decomposition

M Bhattarai, G Chennupati, E Skau… - 2020 IEEE High …, 2020 - ieeexplore.ieee.org
The era of exascale computing opens new venues for innovations and discoveries in many
scientific, engineering, and commercial fields. However, with the exaflops also come the …

Distributed non-negative rescal with automatic model selection for exascale data

M Bhattarai, I Boureima, E Skau, B Nebgen… - Journal of Parallel and …, 2023 - Elsevier
With the boom in the development of computer hardware and software, social media, IoT
platforms, and communications, there has been exponential growth in the volume of data …

Distributed out-of-memory NMF on CPU/GPU architectures

I Boureima, M Bhattarai, M Eren, E Skau… - The Journal of …, 2024 - Springer
We propose an efficient distributed out-of-memory implementation of the non-negative
matrix factorization (NMF) algorithm for heterogeneous high-performance-computing …