Feature selection using artificial gorilla troop optimization for biomedical data: A case analysis with COVID-19 data

J Piri, P Mohapatra, B Acharya, FS Gharehchopogh… - Mathematics, 2022 - mdpi.com
Feature selection (FS) is commonly thought of as a pre-processing strategy for determining
the best subset of characteristics from a given collection of features. Here, a novel discrete …

Transform-based graph topology similarity metrics

G Drakopoulos, E Kafeza, P Mylonas… - Neural Computing and …, 2021 - Springer
Graph signal processing has recently emerged as a field with applications across a broad
spectrum of fields including brain connectivity networks, logistics and supply chains, social …

Tensor clustering: A review

G Drakopoulos, E Spyrou… - 2019 14th International …, 2019 - ieeexplore.ieee.org
Tensor algebra is the next evolutionary step of linear algebra to more than two dimensions.
Its plethora of applications include signal processing, big data, deep learning, multivariate …

Building trusted startup teams from LinkedIn attributes: A higher order probabilistic analysis

G Drakopoulos, E Kafeza, P Mylonas… - 2020 IEEE 32nd …, 2020 - ieeexplore.ieee.org
Startups arguably contribute to the current business landscape by developing innovative
products and services. The discovery of business partners and employees with a specific …

Evaluating graph resilience with tensor stack networks: A keras implementation

G Drakopoulos, P Mylonas - Neural computing and applications, 2020 - Springer
In communication networks resilience or structural coherency, namely the ability to maintain
total connectivity even after some data links are lost for an indefinite time, is a major design …

On tensor distances for self organizing maps: Clustering cognitive tasks

G Drakopoulos, I Giannoukou, P Mylonas… - … Conference on Database …, 2020 - Springer
Self organizing maps (SOMs) are neural networks designed to be in an unsupervised way to
create connections, learned through a modified Hebbian rule, between a high-(the input …

A regularization-based big data framework for winter precipitation forecasting on streaming data

A Kanavos, M Trigka, E Dritsas, G Vonitsanos… - Electronics, 2021 - mdpi.com
In the current paper, we propose a machine learning forecasting model for the accurate
prediction of qualitative weather information on winter precipitation types, utilized in Apache …

Annotation-assisted clustering of player profiles in cultural games: A case for tensor analytics in Julia

G Drakopoulos, Y Voutos, P Mylonas - Big Data and Cognitive Computing, 2020 - mdpi.com
Computer games play an increasingly important role in cultural heritage preservation. They
keep tradition alive in the digital domain, reflect public perception about historical events …

Two-step classification with SVD preprocessing of distributed massive datasets in apache spark

A Alexopoulos, G Drakopoulos, A Kanavos, P Mylonas… - Algorithms, 2020 - mdpi.com
At the dawn of the 10V or big data data era, there are a considerable number of sources
such as smart phones, IoT devices, social media, smart city sensors, as well as the health …

Unsupervised discovery of semantically aware communities with tensor Kruskal decomposition: A case study in Twitter

G Drakopoulos, K Giotopoulos… - … on Semantic and …, 2020 - ieeexplore.ieee.org
Substantial empirical evidence, including the success of synthetic graph generation models
as well as of analytical methodologies, suggests that large, real graphs have a recursive …