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[testing] BGPLVM

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This commit is contained in:
mzwiessele 2015-10-06 14:48:52 +01:00
parent 298893d65f
commit 116ad8762c
6 changed files with 62 additions and 32 deletions
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16
GPy/plotting/gpy_plot/plot_util.py
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@ -129,7 +129,7 @@ def helper_for_plot_data(self, plot_limits, visible_dims, fixed_inputs, resoluti
Xgrid[:,i] = v
return X, Xvar, Y, fixed_dims, free_dims, Xgrid, x, y, xmin, xmax, resolution
def scatter_label_generator(labels, X, input_1, input_2=None, marker=None):
def scatter_label_generator(labels, X, visible_dims, marker=None):
ulabels = []
for lab in labels:
if not lab in ulabels:
@ -140,6 +140,8 @@ def scatter_label_generator(labels, X, input_1, input_2=None, marker=None):
else:
m = None
input_1, input_2, input_3 = visible_dims
for ul in ulabels:
if type(ul) is np.string_:
this_label = ul
@ -160,10 +162,16 @@ def scatter_label_generator(labels, X, input_1, input_2=None, marker=None):
if input_2 is None:
x = X[index, input_1]
y = np.zeros(index.size)
else:
z = None
elif input_3 is None:
x = X[index, input_1]
y = X[index, input_2]
yield x, y, this_label, index, m
z = None
else:
x = X[index, input_1]
y = X[index, input_2]
z = X[index, input_3]
yield x, y, z, this_label, index, m
def subsample_X(X, labels, num_samples=1000):
"""
@ -175,7 +183,7 @@ def subsample_X(X, labels, num_samples=1000):
print("Warning: subsampling X, as it has more samples then 1000. X.shape={!s}".format(X.shape))
if labels is not None:
subsample = []
for _, _, _, index, _ in scatter_label_generator(labels, X, 0):
for _, _, _, _, index, _ in scatter_label_generator(labels, X, (0, None, None)):
subsample.append(np.random.choice(index, size=max(2, int(index.size*(float(num_samples)/X.shape[0]))), replace=False))
subsample = np.hstack(subsample)
else: