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Algorithms, Volume 16, Issue 7

2023 July - 47 articles

Cover Story: There is a growing interest in automatically tuning the hyperparameters of deep learning models to reduce complexity and significant advancements have been made to this effect that promise improved performance with fewer resources. This study proposes HyperGE, a two-stage grammar-guided search space pruning algorithm for automatically tuning hyperparameters of deep learning models. HyperGE is driven by grammatical evolution (GE), a bioinspired population-based machine learning algorithm. In Stage 1 of HyperGE, the hyperparameter search space is explored globally by individuals. In Stage 2, the intuitions from the preceding stage significantly reduce the search space by a factor of ~90% and guide the exploitation within this refined space leading to optimal configurations with fewer trials. View this paper
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Articles (47)

  • Article
  • Open Access
11 Citations
3,569 Views
14 Pages

Design of Cloud-Based Real-Time Eye-Tracking Monitoring and Storage System

  • Mustafa Can Gursesli,
  • Mehmet Emin Selek,
  • Mustafa Oktay Samur,
  • Mirko Duradoni,
  • Kyoungju Park,
  • Andrea Guazzini and
  • Antonio Lanatà

24 July 2023

The rapid development of technology has led to the implementation of data-driven systems whose performance heavily relies on the amount and type of data. In the latest decades, in the field of bioengineering data management, among others, eye-trackin...

  • Article
  • Open Access
7 Citations
4,178 Views
20 Pages

Hierarchical Reinforcement Learning for Crude Oil Supply Chain Scheduling

  • Nan Ma,
  • Ziyi Wang,
  • Zeyu Ba,
  • Xinran Li,
  • Ning Yang,
  • Xinyi Yang and
  • Haifeng Zhang

24 July 2023

Crude oil resource scheduling is one of the critical issues upstream in the crude oil industry chain. It aims to reduce transportation and inventory costs and avoid alerts of inventory limit violations by formulating reasonable crude oil transportati...

  • Article
  • Open Access
7 Citations
3,800 Views
22 Pages

24 July 2023

Singular spectrum analysis (SSA) is a non-parametric adaptive technique used for time series analysis. It allows solving various problems related to time series without the need to define a model. In this study, we focus on the problem of trend extra...

  • Article
  • Open Access
1 Citations
2,636 Views
18 Pages

24 July 2023

The objective is to find a Cellular Automata (CA) rule that can generate “loop patterns”. A loop pattern is given by ones on a zero background showing loops. In order to find out how loop patterns can be locally defined, tentative loop pa...

  • Article
  • Open Access
1 Citations
2,508 Views
17 Pages

Learning from Imbalanced Datasets: The Bike-Sharing Inventory Problem Using Sparse Information

  • Giovanni Ceccarelli,
  • Guido Cantelmo,
  • Marialisa Nigro and
  • Constantinos Antoniou

22 July 2023

In bike-sharing systems, the inventory level is defined as the daily number of bicycles required to optimally meet the demand. Estimating these values is a major challenge for bike-sharing operators, as biased inventory levels lead to a reduced quali...

  • Article
  • Open Access
2 Citations
2,234 Views
16 Pages

21 July 2023

For multimodal multi-objective optimization problems (MMOPs), there are multiple equivalent Pareto optimal solutions in the decision space that are corresponding to the same objective value. Therefore, the main tasks of multimodal multi-objective opt...

  • Article
  • Open Access
6 Citations
2,448 Views
17 Pages

20 July 2023

This paper proposes two algorithms for clustering data, which are variable-sized sets of elementary items. An example of such data occurs in the analysis of a medical diagnosis, where the goal is to detect human subjects who share common diseases to...

  • Article
  • Open Access
5 Citations
2,683 Views
20 Pages

20 July 2023

Selecting the appropriate temporary facilities is important for reducing cost and improving the productivity and safety of craft professionals in construction projects. However, the manual planning process for scaffolding systems is typically prone t...

  • Article
  • Open Access
1 Citations
2,574 Views
19 Pages

19 July 2023

Time series data typically exhibit high dimensionality and complexity, necessitating the use of specific approximation methods to perform computations on the data. The currently employed compression methods suffer from varying degrees of feature loss...

  • Article
  • Open Access
3 Citations
3,197 Views
25 Pages

18 July 2023

A new algorithm is presented to compute nonrigid, possibly partial comparisons of shapes defined by unstructured triangulations of their surfaces. The algorithm takes as input a pair of surfaces with each surface given by a distinct and unrelated tri...

  • Article
  • Open Access
1 Citations
2,496 Views
20 Pages

18 July 2023

This paper proposes a continuous state partially observable Markov decision process (POMDP) model for the corrosion maintenance of oil and gas pipelines. The maintenance operations include complex and extensive activities to detect the corrosion type...

  • Article
  • Open Access
2,340 Views
12 Pages

Neural-Network-Based Quark–Gluon Plasma Trigger for the CBM Experiment at FAIR

  • Artemiy Belousov,
  • Ivan Kisel,
  • Robin Lakos and
  • Akhil Mithran

18 July 2023

Algorithms optimized for high-performance computing, which ensure both speed and accuracy, are crucial for real-time data analysis in heavy-ion physics experiments. The application of neural networks and other machine learning methodologies, which ar...

  • Article
  • Open Access
18 Citations
5,103 Views
13 Pages

Deep Learning for Detecting Verticillium Fungus in Olive Trees: Using YOLO in UAV Imagery

  • Marios Mamalis,
  • Evangelos Kalampokis,
  • Ilias Kalfas and
  • Konstantinos Tarabanis

17 July 2023

The verticillium fungus has become a widespread threat to olive fields around the world in recent years. The accurate and early detection of the disease at scale could support solving the problem. In this paper, we use the YOLO version 5 model to det...

  • Article
  • Open Access
4 Citations
2,491 Views
16 Pages

Leaking Gas Source Tracking for Multiple Chemical Parks within An Urban City

  • Junwei Lang,
  • Zhenjia Zeng,
  • Tengfei Ma and
  • Sailing He

17 July 2023

Sudden air pollution accidents (explosions, fires, leaks, etc.) in chemical industry parks may result in great harm to people’s lives, property, and the ecological environment. A gas tracking network can monitor hazardous gas diffusion using tr...

  • Article
  • Open Access
1 Citations
1,881 Views
15 Pages

17 July 2023

In contemporary wireless communication networks, base stations are organized into coordinated clusters (called cells) to jointly serve the users. However, such fixed systems are plagued by the so-called cell-edge problem: near the boundaries, the int...

  • Article
  • Open Access
7 Citations
3,943 Views
18 Pages

A Blockchain-Based Auction Framework for Location-Aware Services

  • Khaled Almiani,
  • Mutaz Abu Alrub,
  • Young Choon Lee,
  • Taha H. Rashidi and
  • Amirmohammad Pasdar

16 July 2023

As a critical factor in ensuring the growth of the electronic auction (e-auction) domain, the privacy and security of the participants (sellers and buyers) must always be guaranteed. Traditionally, auction data, including participant details, are sto...

  • Article
  • Open Access
8 Citations
4,663 Views
28 Pages

Chatbots for Cultural Venues: A Topic-Based Approach

  • Vasilis Bouras,
  • Dimitris Spiliotopoulos,
  • Dionisis Margaris,
  • Costas Vassilakis,
  • Konstantinos Kotis,
  • Angeliki Antoniou,
  • George Lepouras,
  • Manolis Wallace and
  • Vassilis Poulopoulos

14 July 2023

Digital assistants—such as chatbots—facilitate the interaction between persons and machines and are increasingly used in web pages of enterprises and organizations. This paper presents a methodology for the creation of chatbots that offer...

  • Article
  • Open Access
7 Citations
3,154 Views
16 Pages

14 July 2023

Agent-based model (ABM) development needs information on system components and interactions. Qualitative narratives contain contextually rich system information beneficial for ABM conceptualization. Traditional qualitative data extraction is manual,...

  • Article
  • Open Access
26 Citations
2,561 Views
17 Pages

14 July 2023

The hybrid model for analyzing distortions of a laser beam passed through a moderately scattering medium with the number of scattering events up to 10 is developed and investigated. The model implemented the Monte Carlo technique to simulate the beam...

  • Article
  • Open Access
8 Citations
3,996 Views
21 Pages

Simplified Routing Mechanism for Capsule Networks

  • János Hollósi,
  • Áron Ballagi and
  • Claudiu Radu Pozna

13 July 2023

Classifying digital images using neural networks is one of the most fundamental tasks within the field of artificial intelligence. For a long time, convolutional neural networks have proven to be the most efficient solution for processing visual data...

  • Article
  • Open Access
5 Citations
2,302 Views
22 Pages

Basis Functions for a Transient Analysis of Linear Commensurate Fractional-Order Systems

  • Dalibor Biolek,
  • Viera Biolková,
  • Zdeněk Kolka and
  • Zdeněk Biolek

13 July 2023

In this paper, the possibilities of expressing the natural response of a linear commensurate fractional-order system (FOS) as a linear combination of basis functions are analyzed. For all possible types of sα-domain poles, the corresponding bas...

  • Article
  • Open Access
6 Citations
2,834 Views
16 Pages

13 July 2023

Wind power is one of the most important sources of renewable energy available today. A large part of the cost of wind energy is due to the cost of maintaining wind power equipment. When a wind turbine component fails to function, it might need to be...

  • Article
  • Open Access
2 Citations
2,257 Views
20 Pages

Three Metaheuristic Approaches for Tumor Phylogeny Inference: An Experimental Comparison

  • Simone Ciccolella,
  • Gianluca Della Vedova,
  • Vladimir Filipović and
  • Mauricio Soto Gomez

12 July 2023

Being able to infer the clonal evolution and progression of cancer makes it possible to devise targeted therapies to treat the disease. As discussed in several studies, understanding the history of accumulation and the evolution of mutations during c...

  • Article
  • Open Access
4 Citations
2,783 Views
25 Pages

Mind the O˜: Asymptotically Better, but Still Impractical, Quantum Distributed Algorithms

  • Phillip Kerger,
  • David E. Bernal Neira,
  • Zoe Gonzalez Izquierdo and
  • Eleanor G. Rieffel

11 July 2023

We present two algorithms in the quantum CONGEST-CLIQUE model of distributed computation that succeed with high probability: one for producing an approximately optimal Steiner tree, and one for producing an exact directed minimum spanning tree, each...

  • Article
  • Open Access
3 Citations
2,920 Views
20 Pages

Mathematical Model of Fuse Effect Initiation in Fiber Core

  • Victoria A. Starikova,
  • Yuri A. Konin,
  • Alexandra Yu. Petukhova,
  • Svetlana S. Aleshkina,
  • Andrey A. Petrov and
  • Anatolii V. Perminov

11 July 2023

This work focuses on the methods of creating in-fiber devices, such as sensors, filters, and scatterers, using the fiber fuse effect. The effect allows for the creation of structures in a fiber core. However, it is necessary to know exactly how this...

  • Article
  • Open Access
12 Citations
5,519 Views
20 Pages

A Bioinformatics Analysis of Ovarian Cancer Data Using Machine Learning

  • Vincent Schilling,
  • Peter Beyerlein and
  • Jeremy Chien

11 July 2023

The identification of biomarkers is crucial for cancer diagnosis, understanding the underlying biological mechanisms, and developing targeted therapies. In this study, we propose a machine learning approach to predict ovarian cancer patients’ o...

  • Article
  • Open Access
1,902 Views
21 Pages

A Tool for Control Research Using Evolutionary Algorithm That Generates Controllers with a Pre-Specified Morphology

  • Francisco-David Hernandez,
  • Domingo Cortes,
  • Marco Antonio Ramirez-Salinas and
  • Luis Alfonso Villa-Vargas

8 July 2023

In control research and design it is frequently necessary to explore, evaluate, tune and compare many control strategies. These activities are assisted by software tools of increasing complexity; however, even with the existing high performance tools...

  • Article
  • Open Access
2 Citations
2,962 Views
24 Pages

8 July 2023

It is well known that ω-circulant matrices with ω0 can be simultaneously diagonalized by a transform matrix, which can be factored as the product of a diagonal matrix, depending on ω, and of the unitary matrix Fn associated to t...

  • Article
  • Open Access
3 Citations
2,705 Views
12 Pages

Vessel Velocity Estimation and Docking Analysis: A Computer Vision Approach

  • João V. R. de Andrade,
  • Bruno J. T. Fernandes,
  • André R. L. C. Izídio,
  • Nilson M. da Silva Filho and
  • Francisco Cruz

30 June 2023

The opportunities for leveraging technology to enhance the efficiency of vessel port activities are vast. Applying video analytics to model and optimize certain processes offers a remarkable way to improve overall operations. Within the realm of vess...

  • Article
  • Open Access
10 Citations
5,159 Views
16 Pages

30 June 2023

Classical reinforcement learning (RL) techniques are generally concerned with the design of decision-making policies driven by the maximisation of the expected outcome. Nevertheless, this approach does not take into consideration the potential risk a...

  • Article
  • Open Access
13 Citations
2,636 Views
19 Pages

A Fast Surrogate Model-Based Algorithm Using Multilayer Perceptron Neural Networks for Microwave Circuit Design

  • Mohammad (Behdad) Jamshidi,
  • Salah I. Yahya,
  • Saeed Roshani,
  • Muhammad Akmal Chaudhary,
  • Yazeed Yasin Ghadi and
  • Sobhan Roshani

30 June 2023

This paper introduces a novel algorithm for designing a low-pass filter (LPF) and a microstrip Wilkinson power divider (WPD) using a neural network surrogate model. The proposed algorithm is applicable to various microwave devices, enhancing their pe...

  • Review
  • Open Access
7 Citations
10,286 Views
20 Pages

30 June 2023

Reinforcement Learning is one of the many machine learning paradigms. With no labelled data, it is concerned with balancing the exploration and exploitation of an environment with one or more agents present in it. Recently, many breakthroughs have be...

  • Article
  • Open Access
1 Citations
2,426 Views
13 Pages

Robustness of Artificial Neural Networks Based on Weight Alterations Used for Prediction Purposes

  • Andreas G. Savva,
  • Theocharis Theocharides and
  • Chrysostomos Nicopoulos

29 June 2023

Nowadays, due to their excellent prediction capabilities, the use of artificial neural networks (ANNs) in software has significantly increased. One of the most important aspects of ANNs is robustness. Most existing studies on robustness focus on adve...

  • Article
  • Open Access
4 Citations
3,606 Views
13 Pages

A Surprisal-Based Greedy Heuristic for the Set Covering Problem

  • Tommaso Adamo,
  • Gianpaolo Ghiani,
  • Emanuela Guerriero and
  • Deborah Pareo

29 June 2023

In this paper we exploit concepts from Information Theory to improve the classical Chvatal greedy algorithm for the set covering problem. In particular, we develop a new greedy procedure, called Surprisal-Based Greedy Heuristic (SBH), incorporating t...

  • Article
  • Open Access
2 Citations
2,210 Views
19 Pages

On Orthogonal Double Covers and Decompositions of Complete Bipartite Graphs by Caterpillar Graphs

  • Ahmed El-Mesady,
  • Tasneem Farahat,
  • Ramadan El-Shanawany and
  • Aleksandr Y. Romanov

29 June 2023

Nowadays, graph theory is one of the most exciting fields of mathematics due to the tremendous developments in modern technology, where it is used in many important applications. The orthogonal double cover (ODC) is a branch of graph theory and is co...

  • Article
  • Open Access
3 Citations
4,271 Views
16 Pages

29 June 2023

Neural networks have revolutionised the way we approach problem solving across multiple domains; however, their effective design and efficient use of computational resources is still a challenging task. One of the most important factors influencing t...

  • Article
  • Open Access
3 Citations
2,684 Views
24 Pages

Developing Analytical Tools for Arabic Sentiment Analysis of COVID-19 Data

  • Naglaa Abdelhady,
  • Ibrahim E. Elsemman,
  • Mohammed F. Farghally and
  • Taysir Hassan A. Soliman

29 June 2023

Due to the widespread distribution of coronavirus and the existence of a massive quantity of data on social networking sites, particularly Twitter, there was an urgent need to develop a model that evaluates users’ emotions and determines how th...

  • Article
  • Open Access
8 Citations
4,870 Views
13 Pages

Audio Anti-Spoofing Based on Audio Feature Fusion

  • Jiachen Zhang,
  • Guoqing Tu,
  • Shubo Liu and
  • Zhaohui Cai

28 June 2023

The rapid development of speech synthesis technology has significantly improved the naturalness and human-likeness of synthetic speech. As the technical barriers for speech synthesis are rapidly lowering, the number of illegal activities such as frau...

  • Article
  • Open Access
9 Citations
4,227 Views
12 Pages

Integrated Gradients for Feature Assessment in Point Cloud-Based Data Sets

  • Markus Schwegler,
  • Christoph Müller and
  • Alexander Reiterer

28 June 2023

Integrated gradients is an explainable AI technique that aims to explain the relationship between a model’s predictions in terms of its features. Adapting this technique to point clouds and semantic segmentation models allows a class-wise attri...

  • Article
  • Open Access
6 Citations
2,549 Views
18 Pages

28 June 2023

Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder that can reduce quality of life and burden families. However, there is a lack of objectivity in clinical diagnosis, so it is very important to develop a method for early and accu...

  • Article
  • Open Access
2,375 Views
19 Pages

26 June 2023

Extracting k-order maximal-sum principal submatrix from an n-order real matrix is a typical combinatorial optimization problem and an NP-hard problem. To improve the computational efficiency of solving this problem, we, in this paper, propose an acce...

  • Article
  • Open Access
2 Citations
2,304 Views
12 Pages

25 June 2023

Practical entanglement distillation is a critical component in quantum information theory. Entanglement distillation is often utilized for designing quantum computer networks and quantum repeaters. The practical entanglement distillation problem is f...

  • Article
  • Open Access
1,906 Views
19 Pages

Algorithm for Enhancing Event Reconstruction Efficiency by Addressing False Track Filtering Issues in the SPD NICA Experiment

  • Gulshat Amirkhanova,
  • Madina Mansurova,
  • Gennadii Ososkov,
  • Nasurlla Burtebayev,
  • Adai Shomanov and
  • Murat Kunelbayev

22 June 2023

This paper introduces methods for parallelizing the algorithm to enhance the efficiency of event recovery in Spin Physics Detector (SPD) experiments at the Nuclotron-based Ion Collider Facility (NICA). The problem of eliminating false tracks during t...

  • Article
  • Open Access
4 Citations
2,813 Views
22 Pages

21 June 2023

This article presents a realized application of a model and algorithm to optimize the formation and use of a machine and tractor fleet of an agricultural enterprise in crop farming. The concepts and indicators characterizing the processes of agricult...

  • Article
  • Open Access
2 Citations
2,802 Views
30 Pages

21 June 2023

We present a novel nonparametric adaptive partitioning and stitching (NAPS) algorithm to estimate a probability density function (PDF) of a single variable. Sampled data is partitioned into blocks using a branching tree algorithm that minimizes devia...

  • Article
  • Open Access
1 Citations
2,197 Views
24 Pages

21 June 2023

Rapid and accurate tree-crown detection is significant to forestry management and precision forestry. In the past few decades, the development and maturity of remote sensing technology has created more convenience for tree-crown detection and plantin...

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Algorithms - ISSN 1999-4893