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introduce deprecation path to empirical_samples in initialize_latent

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Martin Bubel 2024-07-21 16:16:36 +02:00
parent 92fb49d001
commit 55bcc27a2e
1 changed files with 15 additions and 1 deletions
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16
GPy/util/initialization.py
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@ -5,17 +5,31 @@ Created on 24 Feb 2014
""" """
import numpy as np import numpy as np
import warnings
from ..util.pca import PCA from ..util.pca import PCA
def initialize_latent(init, input_dim, Y): def initialize_latent(init, input_dim, Y):
"""
:param init: initialization method for the latent space, 'PCA' or 'random'
"""
# dealing with depcrecated initialization method
# should be remove along the next major release
if init == "empirical_samples":
warnings.warn(
"Deprecated initialization method 'empirical_samples'. "
"Use 'random' instead.",
DeprecationWarning,
)
init == "random"
Xr = np.asfortranarray(np.random.normal(0, 1, (Y.shape[0], input_dim))) Xr = np.asfortranarray(np.random.normal(0, 1, (Y.shape[0], input_dim)))
if "PCA" == init: if "PCA" == init:
p = PCA(Y) p = PCA(Y)
PC = p.project(Y, min(input_dim, Y.shape[1])) PC = p.project(Y, min(input_dim, Y.shape[1]))
Xr[: PC.shape[0], : PC.shape[1]] = PC Xr[: PC.shape[0], : PC.shape[1]] = PC
var = 0.1 * p.fracs[:input_dim] var = 0.1 * p.fracs[:input_dim]
elif init == "empirical_samples": elif init == "random":
from ..util.linalg import tdot from ..util.linalg import tdot
from ..util import diag from ..util import diag