Results 21 to 30 of about 1,759 (181)
Comparison of Doubling the Size of Image Algorithms
Моделирование и анализ информационных систем, 2016 In this paper the comparative analysis for quality of some interpolation non-adaptive methods of doubling the image size is carried out. We used the value of a mean square error for estimation accuracy (quality) approximation.
S. E. Vaganov, S. I. Khashin
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Lanczos method for spatio‐temporal graph convolutional networks to forecast expressway flow
IET Intelligent Transport Systems, 2023 Traffic forecasting has made pronounced progress with the development of graph convolution networks and the use of the topology of road networks. However, existing works face some limitations when it comes to modelling spatial dependencies.
Zhumei Gou, Yonggang Shen, Shuifu Chen
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Krylov complexity and orthogonal polynomials
Nuclear Physics B, 2022 Krylov complexity measures operator growth with respect to a basis, which is adapted to the Heisenberg time evolution. The construction of that basis relies on the Lanczos algorithm, also known as the recursion method.
Wolfgang Mück, Yi Yang
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Accuracy of the finite-temperature Lanczos method compared to simple typicality-based estimates
Physical Review Research, 2020 We study trace estimators for equilibrium thermodynamic observables that rely on the idea of typicality and derivatives thereof such as the finite-temperature Lanczos method (FTLM). As numerical examples quantum spin systems are studied.
Jürgen Schnack +2 more
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Microcanonical Lanczos method [PDF]
Philosophical Magazine, 2006 In this article, the development of a novel numerical simulation method based on the Lanczos technique and the microcanonical statistical ensemble is discussed. It allows the evaluation of finite temperature dynamic correlations for quantum many-body systems on lattices larger than hitherto possible.
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Cauchy-Lanczos Algorithm for Effective Dimension Reduction
IEEE AccessThe aim of dimension reduction techniques is to eliminate unnecessary information from extensive datasets, thereby enhancing the effectiveness of data analysis.
Xuansheng Wang +2 more
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On computing the minimum singular value of a tensor sum
Special Matrices, 2019 Recently, the Lanczos bidiagonalization method over tensor space has been proposed for computing the maximum and minimum singular values of a tensor sum T.
Ohashi A., Sogabe T.
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Numerical Algorithms for Computing an Arbitrary Singular Value of a Tensor Sum
Axioms, 2021 We consider computing an arbitrary singular value of a tensor sum: T:=In⊗Im⊗A+In⊗B⊗Iℓ+C⊗Im⊗Iℓ∈Rℓmn×ℓmn, where A∈Rℓ×ℓ, B∈Rm×m, C∈Rn×n. We focus on the shift-and-invert Lanczos method, which solves a shift-and-invert eigenvalue problem of (TTT−σ˜2Iℓmn)−1 ...
Asuka Ohashi, Tomohiro Sogabe
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Orientational Effects in the Low Pair Continuum of Aluminium
Contributions to Plasma Physics, EarlyView.ABSTRACT We compare the predictions of the dynamic structure factor (DSF) of ambient polycrystalline aluminium from time‐dependent density functional theory (TDDFT) in the pair continuum regime to recent ultrahigh resolution x‐ray Thomson scattering measurements, collected at the European XFEL.
Thomas Gawne +8 more
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A Fast Enhanced Secure Image Chaotic Cryptosystem Based on Hybrid Chaotic Magic Transform
Modelling and Simulation in Engineering, 2017 An enhanced secure image chaotic cryptosystem has been proposed based on hybrid CMT-Lanczos algorithm. We have achieved fast encryption and decryption along with privacy of images.
Srinivas Koppu, V. Madhu Viswanatham
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