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linear kernel now has an ARD flag

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This commit is contained in:
Nicolas 2013-01-28 16:21:32 +00:00
parent 1680c71445
commit 2f68f6de86
5 changed files with 208 additions and 204 deletions
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20
GPy/kern/constructors.py
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@ -8,7 +8,6 @@ from kern import kern
from rbf import rbf as rbfpart
from white import white as whitepart
from linear import linear as linearpart
from linear_ARD import linear_ARD as linear_ARD_part
from exponential import exponential as exponentialpart
from Matern32 import Matern32 as Matern32part
from Matern52 import Matern52 as Matern52part
@ -40,28 +39,17 @@ def rbf(D,variance=1., lengthscale=None,ARD=False):
part = rbfpart(D,variance,lengthscale,ARD)
return kern(D, [part])
def linear(D,lengthscales=None):
def linear(D,variances=None,ARD=True):
"""
Construct a linear kernel.
Arguments
---------
D (int), obligatory
lengthscales (np.ndarray)
variances (np.ndarray)
ARD (boolean)
"""
part = linearpart(D,lengthscales)
return kern(D, [part])
def linear_ARD(D,lengthscales=None):
"""
Construct a linear ARD kernel.
Arguments
---------
D (int), obligatory
lengthscales (np.ndarray)
"""
part = linear_ARD_part(D,lengthscales)
part = linearpart(D,variances,ARD)
return kern(D, [part])
def white(D,variance=1.):