Results 1 to 10 of about 592,516 (117)

Natural-gradient learning for spiking neurons [PDF]

eLife, 2022
In many normative theories of synaptic plasticity, weight updates implicitly depend on the chosen parametrization of the weights. This problem relates, for example, to neuronal morphology: synapses which are functionally equivalent in terms of their ...
Elena Kreutzer, Walter Senn, Mihai A Petrovici   +2 more
doaj   +2 more sources

Thermodynamic natural gradient descent (NGD-T) regulates natural-gradient steps by a geometric speed-cost bound [PDF]

Scientific Reports
We introduce Thermodynamic Natural Gradient Descent (NGD-T), an optimizer that enforces a physical speed-cost constraint by combining Fisher-preconditioned updates with a dissipation-aware step-size regulator.
Barco Jie You
doaj   +2 more sources

Reinforcement Learning: Theory and Applications in HEMS

Energies, 2022
The steep rise in reinforcement learning (RL) in various applications in energy as well as the penetration of home automation in recent years are the motivation for this article.
Omar Al-Ani, Sanjoy Das
doaj   +1 more source

Variational Bayesian Algorithms for Maneuvering Target Tracking with Nonlinear Measurements in Sensor Networks

Entropy, 2023
The variational Bayesian method solves nonlinear estimation problems by iteratively computing the integral of the marginal density. Many researchers have demonstrated the fact its performance depends on the linear approximation in the computation of the ...
Yumei Hu, Quan Pan, Bao Deng, Zhen Guo, Menghua Li, Lifeng Chen   +5 more
doaj   +1 more source

Response of Background Herbivory in Mature Birch Trees to Global Warming

Frontiers in Forests and Global Change, 2021
Given the time scale based on the duration of exposure to global warming, natural climate-gradient studies and experimental manipulations have detected long-term (decades to centuries) and short-term (years to decades) ecological responses to global ...
Masahiro Nakamura, Masahiro Nakamura, Moeko Minoshima, Chisato Terada, Kentaro Takagi, Kobayashi Makoto, Hideaki Shibata, Tsutom Hiura   +7 more
doaj   +1 more source

Quantum Natural Gradient [PDF]

Quantum, 2020
A quantum generalization of Natural Gradient Descent is presented as part of a general-purpose optimization framework for variational quantum circuits. The optimization dynamics is interpreted as moving in the steepest descent direction with respect to ...
James Stokes, Josh Izaac, Nathan Killoran, Giuseppe Carleo   +3 more
doaj   +1 more source

Temperature gradient of the natural water surface thermal radiation [PDF]

E3S Web of Conferences, 2023
The dependence of the thermal radiation of natural water on its kinetic temperature in the temperature range of 7-70 degrees Celsius was experimentally investigated.
Gavrilin Sergey N.
doaj   +1 more source

Sparse Channel Estimation for Interference Limited OFDM Systems and Its Convergence Analysis

IEEE Access, 2017
Wireless communication channels are highly prone to interference in addition to the presence of additive white Gaussian noise (AWGN). Stochastic gradient (SG)-based non-parametric maximum likelihood (NPML) estimator, gives better channel estimates in the
Abhijeet Bishnu, Vimal Bhatia
doaj   +1 more source

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
doaj   +1 more source

Reduction of inter- and intraspecific seed mass variability along a land-use intensification gradient

Ecological Indicators, 2021
The functional response of natural patches to surrounding land-use changes is strongly related to variations in functional traits of coexisting species.
Erika Bazzato, Elisa Serra, Simona Maccherini, Michela Marignani   +3 more
doaj   +1 more source