Description Usage Arguments Value
Get the Covariance Matrix Grad for a Kernel ModelTree
1 2 3 | ## S3 method for class 'ModelTree'
get_covariance_matrix_grad(kernel, kernel.grad = NULL, x,
sigma.n, hyper.params, additional.params = list(), cache = NULL)
|
kernel |
A ModelTree object |
kernel.grad |
Not used for ModelTree objects |
x |
A matrix of data to find the covariance matrix grad of |
sigma.n |
The standard deviation of the noise to add to the kernel - used to regularise the resulting covariance matrix |
hyper.params |
The hyperparameters of |
additional.params |
an empty list (not used for ModelTree objects) |
A covariance matrix
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