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661
A global comparison of social media bot and human characteristics
Published 2025-03-01“…With this definition as a premise, we systematically compare the characteristics between bots and humans across global events, and reflect on how the software-programmed bot is an Artificial Intelligent algorithm, and its potential for evolution as technology advances. …”
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662
Time-varying channel estimation in reconfigurable intelligent surface assisted communication system
Published 2024-01-01“…Aiming at the key problems need to be solved, such as cascade channel sparse representation, time-varying channel parameter tracking and signal reconstruction, for time-varying cascade channels estimation of reconfigurable intelligent surface (RIS) assisted communication system, a Khatri-Rao and hierarchical Bayesian Kalman filter (KR-HBKF) algorithm was proposed.Firstly, the Khatri-Rao product and Kronecker product transformations were used to obtain the sparse representation of RIS cascaded channels based on the sparse characteristics of channels, thus the RIS cascaded channel estimation problem was transformed into a low-dimensional sparse signal recovery problem.Then, according to the state evolution model of RIS cascaded channel, the time correlation parameter was introduced into the prediction model of HBKF algorithm, and the improved HBKF was applied to solve the problem of time-varying channel parameter tracking and signal reconstruction for completing the time-varying cascaded channels estimation.The sparsity and time correlation of the channel were comprehensively considered in the KR-HBKF algorithm, thus better estimation accuracy could be obtained with small pilot overhead.Compared with the traditional compressed sensing algorithm, the simulation results show that the proposed algorithm has about 5 dB estimated performance improvement, and better robustness performance under different time-varying channel conditions.…”
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663
Adaptive dynamic programming-based multi-fault tolerant control of reconfigurable manipulator with input constraint
Published 2024-08-01“…Then, an evaluation neural network (NN) is established and the Hamilton–Jacobi–Bellman (HJB) equation is solved by online strategy iterative algorithm. …”
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664
A novel LTE indoor location system based on multiple antenna clusters
Published 2017-03-01“…Then, a new location algorithm was designed which could support flexible antenna configuration. …”
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665
Fractional-Order Adaptive P-Laplace Equation-Based Art Image Edge Detection
Published 2021-01-01“…By comparing with other algorithms, the image edge detection effect is measured with the help of evaluation metrics such as peak signal-to-noise ratio and structural similarity, and the optimal value is selected iteratively so that the image with the best edge detection result is retained. …”
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666
Power Law Analysis of Financial Index Dynamics
Published 2012-01-01“…This paper applies PL description to analyze different periods of the business cycle. With such purpose the evolution of ten important stock market indices (DAX, Dow Jones, NASDAQ, Nikkei, NYSE, S&P500, SSEC, HSI, TWII, and BSE) over time is studied. …”
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667
Calibration and surrogate model-based sensitivity analysis of crystal plasticity finite element models
Published 2024-11-01“…Comparison of the Nelder-Mead and differential evolution algorithms demonstrated that only the differential evolution algorithm was able to reliably find the global optimum due to the presence of local minima in the calibration objective function. …”
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668
Applicability Analysis of Log Calculation Method for Organic Matter Maturity of Changning Shale Gas Reservoir in Southern Sichuan Basin
Published 2024-04-01“…The shale formation of Wufeng formation and Longmaxi formation in southern Sichuan are affected by sedimentation and uplift caused by multi-stage tectonic movement, which makes the degree of thermal evolution in different regions very different. The maturity of organic matter is an important parameter to evaluate the degree of thermal evolution of shale gas reservoirs. …”
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669
A novel computational method identifies intra- and inter-species recombination events in Staphylococcus aureus and Streptococcus pneumoniae.
Published 2012-01-01“…The locations of the recombination breakpoints are determined using a statistical test that is able to account for the differences in the natural rate of evolution between different genes. …”
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670
Tomography of Parametrized Quantum States
Published 2025-06-01“…We showcase our algorithm with two examples of shadow tomography of states time evolved under an NMR Hamiltonian and a free-fermionic Hamiltonian.…”
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671
Automated Detection of Central Retinal Artery Occlusion Using OCT Imaging via Explainable Deep Learning
Published 2025-03-01“…Conclusions: Our machine learning algorithm (MLA) exhibited a high AUC, as well as sensitivity and specificity in detecting CRAO and the differential classes, respectively. …”
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672
Minimizing the Active Power Losses and Retaining the Voltage Profile of the Distribution System Using Soft Computing Techniques with DG Source
Published 2022-01-01“…The proposed BAT algorithm has been executed with the MATLAB 2016 software and compared with the differential evolution technique for IEEE 33 bus, IEEE 69 bus, and Indian real time 62 bus systems. …”
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673
QuantumGS-Box—A Key-Dependent GA and QRNG-Based S-Box for High-Speed Cloud-Based Storage Encryption
Published 2024-12-01“…The proposed work generates the S-box optimized values in a dynamic way, and an experimental evaluation of the proposed S-box method has been conducted using several cryptographic criteria, including bit independence criteria, speed, non-linearity, differential and linear approximation probabilities, strict avalanche criteria and balanced output. …”
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674
An Effective ABC-SVM Approach for Surface Roughness Prediction in Manufacturing Processes
Published 2019-01-01“…Further, to evaluate the optimization performance of ABC in parameters determination of SVM, this study compares the prediction performance of SVM models optimized by well-known evolutionary and swarm-based algorithms (differential evolution (DE), genetic algorithm (GA), particle swarm optimization (PSO), and ABC) and analyzes ability of these optimization algorithms from their optimization mechanism and convergence speed based on experimental datasets of turning and milling. …”
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675
An Electrochemical/Thermodynamic Analytical Model for Hard‐Pack Lithium‐Ion Batteries in Engineering Education
Published 2025-02-01“…The paper elucidates the mechanisms of electrochemical/thermodynamic behavior evolution in lithium‐ion batteries under thermal abuse and develops a state evaluation model based on ordinary differential equations. …”
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676
Spatial Vibration Characteristics and Damage Identification of Toppling Dangerous Rock Mass
Published 2024-09-01“…The unidirectional kinetic indices are strongly correlated with the damage evolution of the structural plane and show directional differences in the damage sensitivity of the dangerous rock mass. …”
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677
ENCRYPTION OF IMAGES ON THE BASIS OF CHAOTIC MAPPING AND PARALLEL COMPUTING
Published 2017-12-01“…Resistance of this algorithm to statistical and differential cryptanalysis was evaluated. …”
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678
Advanced driver assistance system (ADAS) and machine learning (ML): The dynamic duo revolutionizing the automotive industry
Published 2025-06-01“…This study summarizes all the critical algorithms used in ADAS technologies and presents the evolution of ADAS technology. …”
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679
Cryptanalysis of image confidentiality scheme based on hybrid chaotic maps
Published 2025-07-01“…In our study, we provide a systematic CPA of the elementary algorithm, confirmed using experimental evaluation. …”
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680
Semi-supervised dynamic community detection based on non-negative matrix factorization
Published 2016-02-01“…How to effectively combine the network structures on different time points was the key and difficulty to affect the performance of detection algorithms. …”
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