From 902c05813a8d83a917ca3608cbfe59afe5e10616 Mon Sep 17 00:00:00 2001
From: David Luevano Alvarado <55825613+luevano@users.noreply.github.com>
Date: Thu, 26 Mar 2020 16:07:05 -0700
Subject: Fix wasserstein kernel
---
ml_exp/kernels.py | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/ml_exp/kernels.py b/ml_exp/kernels.py
index 3318fe6cf..0af68f103 100644
--- a/ml_exp/kernels.py
+++ b/ml_exp/kernels.py
@@ -21,7 +21,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""
import numpy as np
-from scipy.stats import wasserstein_distance
+from scipy.stats import wasserstein_distance as was_dist
try:
import tensorflow as tf
TF_AV = True
@@ -163,7 +163,8 @@ def wasserstein_kernel(X1,
K = np.zeros((X1_size, X2_size), dtype=np.float64)
for i in range(X1_size):
- norm = np.array([X2[j] - X1[i] for j in range(X2_size)], dtype=np.float64)
+ norm = np.array([was_dist(X1[i], X2[j]) for j in range(X2_size)],
+ dtype=np.float64)
K[i, :] = np.exp(- alpha * norm)
return K
--
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