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deGradInfer (version 1.0.1)

sigmoidVarKernGradient: Compute gradient of sigmoid kernel with respect to each parameter (used by gptk)

Description

Compute gradient of sigmoid kernel with respect to each parameter (used by gptk)

Usage

sigmoidVarKernGradient(kern, x, x2, covGrad)

Arguments

kern

kernel

x

input 1

x2

input 2

covGrad

gradient of covariance function

Value

d k(x, x2) / d theta