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Algorithms, Volume 18, Issue 2

2025 February - 65 articles

Cover Story: Tensor networks are powerful data structures developed for quantum system simulations that have found use in machine learning due to their high performance in the HPC setting. It is known that when they have highly regular geometries, dimensionality has a large impact on representation power. For heterogeneous structures, however, these effects are not well characterized. In this article, we train tensor networks with different geometries to encode a random quantum state, seeing that densely connected structures achieve better infidelities than more sparse structures, with higher success rates and less time. We also give some insight into how to improve the memory requirements of these sparse structures and how it impacts training, and use a last-generation supercomputer to showcase performance improvements with GPU acceleration. View this paper
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Articles (65)

  • Article
  • Open Access
1,746 Views
18 Pages

19 February 2025

This paper introduces an improved version of the Federated Random High Local Performance (Fed-RHLP) algorithm, specifically aimed at addressing the difficulties posed by Non-IID (Non-Independent and Identically Distributed) data within the context of...

  • Article
  • Open Access
5 Citations
2,786 Views
25 Pages

19 February 2025

The Internet of Things (IoT) is developing quickly, which has led to the development of new opportunities in many different fields. As the number of IoT devices continues to expand, particularly in transportation and healthcare, the need for efficien...

  • Article
  • Open Access
5 Citations
2,962 Views
11 Pages

Knowledge Discovery in Predicting Martensite Start Temperature of Medium-Carbon Steels by Artificial Neural Networks

  • Xiao-Song Wang,
  • Anoop Kumar Maurya,
  • Muhammad Ishtiaq,
  • Sung-Gyu Kang and
  • Nagireddy Gari Subba Reddy

19 February 2025

Martensite start (Ms) temperature is a critical parameter in the production of parts and structural steels and plays a vital role in heat treatment processes to achieve desired properties. However, it is often challenging to estimate accurately throu...

  • Article
  • Open Access
1 Citations
3,094 Views
31 Pages

Solution of Bin Packing Instances in Falkenauer T Class: Not So Hard

  • György Dósa,
  • András Éles,
  • Angshuman Robin Goswami,
  • István Szalkai and
  • Zsolt Tuza

19 February 2025

In this work, the Bin Packing combinatorial optimization problem is studied from the practical side. The focus is on the Falkenauer T benchmark class, which is a collection of 80 problem instances that are considered hard to handle algorithmically. C...

  • Article
  • Open Access
4 Citations
1,420 Views
19 Pages

18 February 2025

Renewable energy sources must be scheduled to manage power flow and load demand. Photovoltaic power generation is usually connected to power distribution networks and is not designed to add significant amounts of production in the event of increased...

  • Article
  • Open Access
2 Citations
1,242 Views
28 Pages

DLMinTC+: A Deep Learning Based Algorithm for Minimum Timeline Cover on Temporal Graphs

  • Giorgio Lazzarinetti,
  • Riccardo Dondi,
  • Sara Manzoni and
  • Italo Zoppis

17 February 2025

Combinatorial optimization on temporal graphs is critical for summarizing dynamic networks in various fields, including transportation, social networks, and biology. Among these problems, the Minimum Timeline Cover (MinTCover) problem, aimed at ident...

  • Article
  • Open Access
2,036 Views
19 Pages

Enumerating Minimal Vertex Covers and Dominating Sets with Capacity and/or Connectivity Constraints

  • Yasuaki Kobayashi,
  • Kazuhiro Kurita,
  • Kevin Mann,
  • Yasuko Matsui and
  • Hirotaka Ono

17 February 2025

In this paper, we consider the minimal vertex cover and minimal dominating sets with capacity and/or connectivity constraint enumeration problems. We develop polynomial-delay enumeration algorithms for these problems on bounded-degree graphs. For the...

  • Article
  • Open Access
2 Citations
1,775 Views
32 Pages

Enhancing Energy Microgrid Sizing: A Multiyear Optimization Approach with Uncertainty Considerations for Optimal Design

  • Sebastián F. Castellanos-Buitrago,
  • Pablo Maya-Duque,
  • Walter M. Villa-Acevedo,
  • Nicolás Muñoz-Galeano and
  • Jesús M. López-Lezama

17 February 2025

This paper addresses the challenge of optimizing microgrid sizing to enhance reliability and efficiency in electrical energy supply. A comprehensive framework that integrates multiyear optimization with uncertainty considerations is presented to faci...

  • Article
  • Open Access
1 Citations
3,831 Views
20 Pages

Optimized Travel Itineraries: Combining Mandatory Visits and Personalized Activities

  • Parida Jewpanya,
  • Pinit Nuangpirom,
  • Siwasit Pitjamit and
  • Warisa Nakkiew

17 February 2025

Tourism refers to the activity of traveling for pleasure, recreation, or leisure purposes. It encompasses a wide range of activities and experiences, from sightseeing to cultural exploration. In today’s digital age, tourists often organize thei...

  • Article
  • Open Access
1,111 Views
15 Pages

17 February 2025

This study introduces a novel portfolio optimization approach that combines Bacterial Foraging Optimization (BFO) with risk management techniques and Sharpe ratio analysis. BFO, a nature-inspired algorithm, is employed to construct diversified portfo...

  • Article
  • Open Access
2 Citations
5,238 Views
11 Pages

Beyond Spectrograms: Rethinking Audio Classification from EnCodec’s Latent Space

  • Jorge Perianez-Pascual,
  • Juan D. Gutiérrez,
  • Laura Escobar-Encinas,
  • Álvaro Rubio-Largo and
  • Roberto Rodriguez-Echeverria

16 February 2025

This paper presents a novel approach to audio classification leveraging the latent representation generated by Meta’s EnCodec neural audio codec. We hypothesize that the compressed latent space representation captures essential audio features m...

  • Article
  • Open Access
2 Citations
1,243 Views
26 Pages

15 February 2025

Cloud manufacturing represents a pioneering service paradigm that provides flexible, personalized manufacturing services to customers via the Internet. Service composition plays a crucial role in cloud manufacturing, which focuses on integrating disp...

  • Article
  • Open Access
1 Citations
2,402 Views
21 Pages

Machine Learning for Decision Support and Automation in Games: A Study on Vehicle Optimal Path

  • Gonçalo Penelas,
  • Luís Barbosa,
  • Arsénio Reis,
  • João Barroso and
  • Tiago Pinto

15 February 2025

In the field of gaming artificial intelligence, selecting the appropriate machine learning approach is essential for improving decision-making and automation. This paper examines the effectiveness of deep reinforcement learning (DRL) within interacti...

  • Article
  • Open Access
3 Citations
3,292 Views
21 Pages

Advancing Taxonomy with Machine Learning: A Hybrid Ensemble for Species and Genus Classification

  • Loris Nanni,
  • Matteo De Gobbi,
  • Roger De Almeida Matos Junior and
  • Daniel Fusaro

14 February 2025

Traditionally, classifying species has required taxonomic experts to carefully examine unique physical characteristics, a time-intensive and complex process. Machine learning offers a promising alternative by utilizing computational power to detect s...

  • Article
  • Open Access
1,438 Views
15 Pages

14 February 2025

In this paper, a new algorithm for the training of Locally Recurrent Neural Networks (LRNNs) is presented, which aims to reduce computational complexity and at the same time guarantee the stability of the network during the training. The main feature...

  • Article
  • Open Access
4 Citations
3,096 Views
22 Pages

Building a Custom Crime Detection Dataset and Implementing a 3D Convolutional Neural Network for Video Analysis

  • Juan Camilo Londoño Lopera,
  • Freddy Bolaños Martinez and
  • Luis Alejandro Fletscher Bocanegra

14 February 2025

This study addresses the challenge of detecting crimes against individuals in public security applications, particularly where the availability of quality data is limited, and existing models exhibit a lack of generalization to real-world scenarios....

  • Article
  • Open Access
2,057 Views
16 Pages

Improved Algorithm to Detect Clandestine Airstrips in Amazon RainForest

  • Gabriel R. Pardini,
  • Paulo M. Tasinaffo,
  • Elcio H. Shiguemori,
  • Tahisa N. Kuck,
  • Marcos R. O. A. Maximo and
  • William R. Gyotoku

13 February 2025

The Amazon biome is frequently targeted by illegal activities, with clandestine mining being one of the most prominent. Due to the dense forest cover, criminals often rely on covert aviation as a logistical tool to supply remote locations and sustain...

  • Article
  • Open Access
2 Citations
1,880 Views
23 Pages

11 February 2025

Deep neural networks have been widely applied to fiber optic sensor systems, where the detection of external intrusion in metro tunnels is a major challenge; thus, how to achieve the optimal balance between resource consumption and accuracy is a crit...

  • Article
  • Open Access
8 Citations
3,315 Views
19 Pages

Performance Investigation of Active, Semi-Active and Passive Suspension Using Quarter Car Model

  • Kyle Samaroo,
  • Abdul Waheed Awan,
  • Siva Marimuthu,
  • Muhammad Naveed Iqbal,
  • Kamran Daniel and
  • Noman Shabbir

10 February 2025

In this paper, a semi-active and fully active suspension system using a PID controller were designed and tuned in MATLAB/Simulink to achieve simultaneous optimisation of comfort and road holding ability. This was performed in order to quantify and ob...

  • Article
  • Open Access
3 Citations
2,140 Views
31 Pages

10 February 2025

Cloud computing, a superset of heterogeneous distributed computing, allows sharing of geographically dispersed resources across multiple organizations on a rental basis using virtualization as per demand. In cloud computing, workflow allocation to ac...

  • Article
  • Open Access
4 Citations
2,021 Views
17 Pages

10 February 2025

Pediatric pneumonia remains a significant global health issue, particularly in low- and middle-income countries, where it contributes substantially to mortality in children under five. This study introduces a deep learning model for pediatric pneumon...

  • Article
  • Open Access
1,792 Views
26 Pages

9 February 2025

This paper presents algorithms to estimate the signal-to-noise ratio (SNR) in the time domain and frequency domain that employ a modified Constant Amplitude Zero Autocorrelation (CAZAC) synchronization preamble, denoted as CAZAC-TD and CAZAC-FD SNR e...

  • Review
  • Open Access
6 Citations
5,252 Views
33 Pages

8 February 2025

Computer vision and artificial intelligence have revolutionized the field of pathological image analysis, enabling faster and more accurate diagnostic classification. Deep learning architectures like convolutional neural networks (CNNs), have shown s...

  • Article
  • Open Access
7 Citations
3,359 Views
29 Pages

8 February 2025

Diabetes requires effective monitoring of the blood glucose level (BGL), traditionally achieved through invasive methods. This study addresses the non-invasive estimation of BGL by utilizing heart rate variability (HRV) features extracted from photop...

  • Article
  • Open Access
5 Citations
1,886 Views
24 Pages

7 February 2025

Remote monitoring of a patient’s vital activities has become increasingly important in dealing with various medical applications. In particular, machine learning (ML) techniques have been extensively utilized to analyze electrocardiogram (ECG)...

  • Article
  • Open Access
2 Citations
3,173 Views
18 Pages

7 February 2025

Accurately estimating house values is a critical challenge for real-estate stakeholders, including homeowners, buyers, sellers, agents, and policymakers. This study introduces a novel approach to this problem using Kolmogorov–Arnold networks (K...

  • Essay
  • Open Access
10 Citations
2,319 Views
19 Pages

6 February 2025

Aiming at the uncertainty in cargo demand in the transportation process, the multimodal transportation path optimization problem is studied from the perspective of a low-carbon economy, and the robust optimization modeling method is introduced. First...

  • Technical Note
  • Open Access
1,000 Views
15 Pages

6 February 2025

The thermal vibration of thick Terfenol-D control law on functionally graded material (FGM) plates/cylindrical shells in nonlinear unsteady supersonic flow with third-order shear deformation theory (TSDT) is investigated by using the generalized diff...

  • Article
  • Open Access
20 Citations
4,574 Views
22 Pages

6 February 2025

Brain tumors profoundly affect human health owing to their intricacy and the difficulties associated with early identification and treatment. Precise diagnosis is essential for effective intervention; nevertheless, the resemblance among tumor forms o...

  • Article
  • Open Access
4 Citations
3,488 Views
21 Pages

ECG Signal Classification Using Interpretable KAN: Towards Predictive Diagnosis of Arrhythmias

  • Hongzhen Cui,
  • Shenhui Ning,
  • Shichao Wang,
  • Wei Zhang and
  • Yunfeng Peng

6 February 2025

To address the need for accurate classification of electrocardiogram (ECG) signals, we employ an interpretable KAN to classify arrhythmia diseases. Experimental evaluation of the MIT-BIH and PTB datasets demonstrates the significant superiority of th...

  • Article
  • Open Access
2,024 Views
22 Pages

Nonparametric Probability Density Function Estimation Using the Padé Approximation

  • Hamid Reza Aghamiri,
  • S. Abolfazl Hosseini,
  • James R. Green and
  • B. John Oommen

6 February 2025

Estimating the Probability Density Function (PDF) of observed data is crucial as a problem in its own right, and also for diverse engineering applications. This paper utilizes two powerful mathematical tools, the concept of moments and the relatively...

  • Article
  • Open Access
2 Citations
2,250 Views
18 Pages

6 February 2025

This paper presents a new method of batch-to-batch optimization control for a fed-batch fermentation process. A recursively updated extreme learning machine (ELM) neural network model is used to model a fed-batch fermentation process. ELM models have...

  • Article
  • Open Access
2 Citations
2,132 Views
18 Pages

Development and External Validation of [18F]FDG PET-CT-Derived Radiomic Models for Prediction of Abdominal Aortic Aneurysm Growth Rate

  • Simran Singh Dhesi,
  • Pratik Adusumilli,
  • Nishant Ravikumar,
  • Mohammed A. Waduud,
  • Russell Frood,
  • Alejandro F. Frangi,
  • Garry McDermott,
  • James H. F. Rudd,
  • Yuan Huang and
  • Andrew F. Scarsbrook
  • + 7 authors

5 February 2025

Objective (1): To develop and validate a machine learning (ML) model using radiomic features (RFs) extracted from [18F]FDG PET-CT to predict abdominal aortic aneurysm (AAA) growth rate. Methods (2): This retrospective study included 98 internal and 5...

  • Article
  • Open Access
4 Citations
3,118 Views
27 Pages

5 February 2025

The interpretability requirement is one of the largest obstacles when deploying machine learning models in various practical fields. Methods of eXplainable Artificial Intelligence (XAI) address those issues. However, the growing number of different s...

  • Review
  • Open Access
3 Citations
4,684 Views
47 Pages

Algorithms for Plant Monitoring Applications: A Comprehensive Review

  • Giovanni Paolo Colucci,
  • Paola Battilani,
  • Marco Camardo Leggieri and
  • Daniele Trinchero

5 February 2025

Many sciences exploit algorithms in a large variety of applications. In agronomy, large amounts of agricultural data are handled by adopting procedures for optimization, clustering, or automatic learning. In this particular field, the number of scien...

  • Article
  • Open Access
1,974 Views
32 Pages

4 February 2025

One of the most actively researched areas in the field of process mining is process discovery, which aims to construct a schema that aligns with existing event trace sequences. Current standard industrial workflow schema induction methods impose cert...

  • Article
  • Open Access
12 Citations
8,184 Views
14 Pages

Pneumonia Disease Detection Using Chest X-Rays and Machine Learning

  • Cathryn Usman,
  • Saeed Ur Rehman,
  • Anwar Ali,
  • Adil Mehmood Khan and
  • Baseer Ahmad

3 February 2025

Pneumonia is a deadly disease affecting millions worldwide, caused by microorganisms and environmental factors. It leads to lung fluid build-up, making breathing difficult, and is a leading cause of death. Early detection and treatment are crucial fo...

  • Article
  • Open Access
2,075 Views
9 Pages

Machine Learning Models to Predict Google Stock Prices

  • Cosmina Elena Bucura and
  • Paolo Giudici

3 February 2025

The aim of this paper is to predict Google stock price using different datasets and machine learning models, and understand which models perform better. The novelty of our approach is that we compare models not only by predictive accuracy but also by...

  • Article
  • Open Access
5 Citations
2,226 Views
20 Pages

2 February 2025

Energy scheduling for hybrid unmanned aerial vehicles (UAVs) is of critical importance to their safe and stable operation. However, traditional approaches, predominantly rule-based, often lack the dynamic adaptability and stability necessary to addre...

  • Article
  • Open Access
1 Citations
1,621 Views
19 Pages

2 February 2025

For some classes of control plants (e.g., large time delay or inverse response), the PID controllers may offer unsatisfactory results; on the other hand, a Model Predictive Control (MPC) algorithm based on a linear model may offer insufficient contro...

  • Article
  • Open Access
4 Citations
1,962 Views
21 Pages

Three-Dimensional Object Recognition Using Orthogonal Polynomials: An Embedded Kernel Approach

  • Aqeel Abdulazeez Mohammed,
  • Ahlam Hanoon Al-sudani,
  • Alaa M. Abdul-Hadi,
  • Almuntadher Alwhelat,
  • Basheera M. Mahmmod,
  • Sadiq H. Abdulhussain,
  • Muntadher Alsabah and
  • Abir Hussain

1 February 2025

Computer vision seeks to mimic the human visual system and plays an essential role in artificial intelligence. It is based on different signal reprocessing techniques; therefore, developing efficient techniques becomes essential to achieving fast and...

  • Article
  • Open Access
12 Citations
4,729 Views
18 Pages

Seizure Detection in Medical IoT: Hybrid CNN-LSTM-GRU Model with Data Balancing and XAI Integration

  • Hanaa Torkey,
  • Sonia Hashish,
  • Samia Souissi,
  • Ezz El-Din Hemdan and
  • Amged Sayed

1 February 2025

The brain acts as the body’s central command, overseeing diverse functions including thought, memory, speech, movement, and the regulation of various organs. When healthy, the brain functions seamlessly and automatically; however, disruptions c...

  • Article
  • Open Access
4 Citations
2,134 Views
25 Pages

1 February 2025

Machine learning (ML) techniques are increasingly used to diagnose faults in aerospace applications, but diagnosing multiple faults in aircraft fuel systems (AFSs) remains challenging due to complex component interactions. This paper evaluates the ac...

  • Article
  • Open Access
1 Citations
1,462 Views
13 Pages

Broadcasting in Stars of Cliques and Path-Connected Cliques

  • Akash Ambashankar and
  • Hovhannes A. Harutyunyan

1 February 2025

Broadcasting is a fundamental information dissemination problem in a connected network where one node, referred to as the originator, must distribute a message to all other nodes through a series of calls along the network’s links. Once informe...

  • Article
  • Open Access
2 Citations
3,791 Views
22 Pages

1 February 2025

Non-invasive haemoglobin (Hb) testing devices enable large-scale haemoglobin screening, but their accuracy is not comparable to traditional blood tests. To this end, this paper aims to design a non-invasive haemoglobin testing device and propose a cl...

  • Article
  • Open Access
19 Citations
4,647 Views
27 Pages

Optimizing Apache Spark MLlib: Predictive Performance of Large-Scale Models for Big Data Analytics

  • Leonidas Theodorakopoulos,
  • Aristeidis Karras and
  • George A. Krimpas

1 February 2025

In this study, we analyze the performance of the machine learning operators in Apache Spark MLlib for K-Means, Random Forest Regression, and Word2Vec. We used a multi-node Spark cluster along with collected detailed execution metrics computed from th...

  • Article
  • Open Access
1 Citations
1,597 Views
26 Pages

1 February 2025

Members of a profession frequently show similar personality characteristics. In this research, we leverage recent advances in NLP to compute personal values using a moral values framework, distinguishing between four different personas that assist in...

  • Article
  • Open Access
2 Citations
1,314 Views
16 Pages

1 February 2025

In recent years, panoptic segmentation has garnered increasing attention from researchers aiming to better understand scenes in images. Although many excellent studies have been proposed, they share some common unresolved issues. Firstly, panoptic se...

  • Article
  • Open Access
2,226 Views
17 Pages

31 January 2025

Tensor networks are a very powerful data structure tool originating from simulations of quantum systems. In recent years, they have seen increased use in machine learning, mostly in trainings with gradient-based techniques, due to their flexibility a...

  • Article
  • Open Access
19 Citations
5,205 Views
59 Pages

28 January 2025

As security threats become more complex, the need for effective intrusion detection systems (IDSs) has grown. Traditional machine learning methods are limited by the need for extensive feature engineering and data preprocessing. To overcome this, we...

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Algorithms - ISSN 1999-4893