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Algorithms, Volume 18, Issue 5

May 2025 - 60 articles

Cover Story: Earth‑scale functional datasets—curves, surfaces, and even 4D fields—are now common. However, existing tools choke on irregular sampling and increasing dimensionality. We introduce Bayesian Scalable Functional Data Analysis (BSFDA), a kernel‑based framework that simultaneously selects basis functions and intrinsic rank. By coupling sparsity‑promoting priors with an active‑subspace optimizer, BSFDA preserves high-dimensional complexities while scaling linearly with the data size. Simulations and real‑world studies, from sparse CD4 immune trajectories to wind‑speed curves and global ocean temperatures, demonstrate its efficacy. Overall, BSFDA offers an adaptive, continuous, and scalable tool for modern functional data analysis across diverse scientific domains. View this paper
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Articles (60)

  • Article
  • Open Access
1,066 Views
15 Pages

Deep Learning-Based Step Size Determination for Hill Climbing Metaheuristics

  • Sándor Szénási,
  • Gábor Légrádi and
  • Gábor Kovács

21 May 2025

Machine Learning-assisted metaheuristics is a new and promising research topic, combining the advantages of both method families. Metaheuristics are widely used general problem solvers that can be fine-tuned by prior knowledge about the search space;...

  • Article
  • Open Access
975 Views
22 Pages

20 May 2025

Renewable energy (RE) is pivotal to achieving both environmental sustainability and long-term energy security, yet systematic evidence on the efficiency of RE investment across South and Southeast Asia remains sparse. This study introduces a rejoice&...

  • Article
  • Open Access
1 Citations
3,040 Views
22 Pages

20 May 2025

Large-language models (LLMs) show promise for automating evidence synthesis, yet head-to-head evaluations remain scarce. We benchmarked five state-of-the-art LLMs—openai/o1-mini, x-ai/grok-2-1212, meta-llama/Llama-3.3-70B-Instruct, google/Gemin...

  • Article
  • Open Access
861 Views
31 Pages

A Heuristics-Guided Simplified Discrete Harmony Search Algorithm for Solving 0-1 Knapsack Problem

  • Fuyuan Zheng,
  • Kanglong Cheng,
  • Kai Yang,
  • Ning Li,
  • Yu Lin and
  • Yiwen Zhong

19 May 2025

The harmony search (HS) algorithm is a novel metaheuristic which has been widely used to solve both continuous and discrete optimization problems. In order to improve the performance and simplify the implementation of the HS algorithm for solving the...

  • Review
  • Open Access
1,430 Views
25 Pages

The Scientific Landscape of Hyper-Heuristics: A Bibliometric Analysis Based on Scopus

  • Helen C. Peñate-Rodríguez,
  • Gilberto Rivera,
  • J. Patricia Sánchez-Solís and
  • Rogelio Florencia

19 May 2025

Hyper-heuristics emerged as a broader metaheuristic framework to address the limitations of traditional optimization heuristics. By abstracting the design of low-level heuristics, hyper-heuristics offer a flexible and adaptable approach to solving co...

  • Article
  • Open Access
1 Citations
884 Views
18 Pages

A Simulation of Contact Graph Routing for Mars–Earth Data Communication

  • Basuki Suhardiman,
  • Kuntjoro Adji Sidarto and
  • Novriana Sumarti

19 May 2025

In this study, we develop a simulation of Contact Graph Routing (CGR) for data communication between Mars, Earth, and relay satellites. Due to the changing of the satellites’ distances to Mars and Earth, respectively, there are specific contact...

  • Article
  • Open Access
650 Views
13 Pages

Adjustment Algorithm for Free Station Control Network of Ultra-Large Deepwater Jacket

  • Xianyang Yang,
  • Wei Shu,
  • Huoping Wang,
  • Haifeng Li,
  • Yi Wang,
  • Di Zhang,
  • Jiayu Liu,
  • Deyang Wang and
  • Wangsui Xiao

19 May 2025

The offshore oil engineering jacket is a giant super-heavy steel frame structure with dimensions in the hundreds of meters. A high-precision free station control network is usually arranged around it to ensure construction accuracy. However, as the j...

  • Article
  • Open Access
2 Citations
1,077 Views
23 Pages

19 May 2025

The behavior decision control of autonomous vehicles is a critical aspect of advancing autonomous driving technology. However, current behavior decision algorithms based on deep reinforcement learning still face several challenges, such as insufficie...

  • Article
  • Open Access
988 Views
18 Pages

Quantifying Intra- and Inter-Observer Variabilities in Manual Contours for Radiotherapy: Evaluation of an MR Tumor Autocontouring Algorithm for Liver, Prostate, and Lung Cancer Patients

  • Gawon Han,
  • Arun Elangovan,
  • Jordan Wong,
  • Asmara Waheed,
  • Keith Wachowicz,
  • Nawaid Usmani,
  • Zsolt Gabos,
  • Jihyun Yun and
  • B. Gino Fallone

19 May 2025

Real-time tumor-tracked radiotherapy with a linear accelerator-magnetic resonance (linac-MR) hybrid system requires accurate tumor delineation at a fast MR imaging rate. Various autocontouring methods have been previously evaluated against “gol...

  • Article
  • Open Access
1,818 Views
15 Pages

Analysis of Short Texts Using Intelligent Clustering Methods

  • Jamalbek Tussupov,
  • Akmaral Kassymova,
  • Ayagoz Mukhanova,
  • Assyl Bissengaliyeva,
  • Zhanar Azhibekova,
  • Moldir Yessenova and
  • Zhanargul Abuova

19 May 2025

This article presents a comprehensive review of short text clustering using state-of-the-art methods: Bidirectional Encoder Representations from Transformers (BERT), Term Frequency-Inverse Document Frequency (TF-IDF), and the novel hybrid method Late...

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Algorithms - ISSN 1999-4893