Results 21 to 30 of about 527,249 (162)
Coastal microbial mat diversity along a natural salinity gradient. [PDF]
PLoS ONE, 2013 The North Sea coast of the Dutch barrier island of Schiermonnikoog is covered by microbial mats that initiate a succession of plant communities that eventually results in the development of a densely vegetated salt marsh.
Henk Bolhuis +2 more
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Natural Evolutionary Gradient Descent Strategy for Variational Quantum Algorithms
Intelligent Computing, 2023 Recent research has demonstrated that parametric quantum circuits (PQCs) are affected by gradients that progressively vanish to zero as a function of the number of qubits.
Jianshe Xie +4 more
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Global Ecology and Conservation, 2023 Land-use change is a major cause of biodiversity loss. Particularly, the expansion of the agricultural frontier results from an increased resource demand by the human population.
Esteban F. Soto +4 more
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A generalized quality assessment method for natural and screen content images
IET Image Processing, 2021 A generalized objective quality assessment method is proposed for natural images and screen content images. Since natural images and screen content images have different statistical properties, the modelling of a generalized quality assessment method ...
Woei‐Tan Loh, David B. L. Bong
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Improving sign-algorithm convergence rate using natural gradient for lossless audio compression
EURASIP Journal on Audio, Speech, and Music Processing, 2022 In lossless audio compression, the predictive residuals must remain sparse when entropy coding is applied. The sign algorithm (SA) is a conventional method for minimizing the magnitudes of residuals; however, this approach yields poor convergence ...
Taiyo Mineo, Hayaru Shouno
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Natural gradients for deformable registration [PDF]
2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2010 We apply the concept of natural gradients to deformable registration. The motivation stems from the lack of physical interpretation for gradients of image-based difference measures. The main idea is to endow the space of deformations with a distance metric which reflects the variation of the difference measure between two deformations.
Darko Zikic, Ali Kamen, Nassir Navab
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Quantum Statistical Learning via Quantum Wasserstein Natural Gradient [PDF]
Journal of Statistical Physics, 2021 AbstractIn this article, we introduce a new approach towards the statistical learning problem $$\mathrm{argmin}_{\rho (\theta ) \in {\mathcal {P}}_{\theta }} W_{Q}^2 (\rho _{\star },\rho (\theta ))$$ argmin ρ
Becker, Simon, Li, Wuchen
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A Natural Gradient Algorithm for Stochastic Distribution Systems
Entropy, 2014 In this paper, we propose a steepest descent algorithm based on the natural gradient to design the controller of an open-loop stochastic distribution control system (SDCS) of multi-input and single output with a stochastic noise.
Zhenning Zhang +3 more
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Modeling Tick Populations: An Ecological Test Case for Gradient Boosted Trees
Peer Community Journal, 2023 General linear models have been the foundational statistical framework used to discover the ecological processes that explain the distribution and abundance of natural populations.
Manley, William +3 more
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Actor-critic algorithm with incremental dual natural policy gradient
Tongxin xuebao, 2017 The existed algorithms for continuous action space failed to consider the way of selecting optimal action and utilizing the knowledge of the action space,so an efficient actor-critic algorithm was proposed by improving the natural gradient.The objective ...
Peng ZHANG +4 more
doaj +2 more sources