update SinkhornTransport class + added test for class

1 files changed, 51 insertions, 0 deletions

diff --git a/test/test_da.py b/test/test_da.py
index dfba83f..e7b4ed1 100644
--- a/test/test_da.py
+++ b/test/test_da.py
@@ -6,6 +6,57 @@
 
 import numpy as np
 import ot
+from numpy.testing.utils import assert_allclose, assert_equal
+from ot.datasets import get_data_classif
+from ot.utils import unif
+
+np.random.seed(42)
+
+
+def test_sinkhorn_transport():
+    """test_sinkhorn_transport
+    """
+
+    ns = 150
+    nt = 200
+
+    Xs, ys = get_data_classif('3gauss', ns)
+    Xt, yt = get_data_classif('3gauss2', nt)
+
+    clf = ot.da.SinkhornTransport()
+
+    # test its computed
+    clf.fit(Xs=Xs, Xt=Xt)
+
+    # test dimensions of coupling
+    assert_equal(clf.Cost.shape, ((Xs.shape[0], Xt.shape[0])))
+    assert_equal(clf.gamma_.shape, ((Xs.shape[0], Xt.shape[0])))
+
+    # test margin constraints
+    mu_s = unif(ns)
+    mu_t = unif(nt)
+    assert_allclose(np.sum(clf.gamma_, axis=0), mu_t, rtol=1e-3, atol=1e-3)
+    assert_allclose(np.sum(clf.gamma_, axis=1), mu_s, rtol=1e-3, atol=1e-3)
+
+    # test transform
+    transp_Xs = clf.transform(Xs=Xs)
+    assert_equal(transp_Xs.shape, Xs.shape)
+
+    Xs_new, _ = get_data_classif('3gauss', ns + 1)
+    transp_Xs_new = clf.transform(Xs_new)
+
+    # check that the oos method is not working
+    assert_equal(transp_Xs_new, Xs_new)
+
+    # test inverse transform
+    transp_Xt = clf.inverse_transform(Xt=Xt)
+    assert_equal(transp_Xt.shape, Xt.shape)
+
+    Xt_new, _ = get_data_classif('3gauss2', nt + 1)
+    transp_Xt_new = clf.inverse_transform(Xt=Xt_new)
+
+    # check that the oos method is not working and returns the input data
+    assert_equal(transp_Xt_new, Xt_new)
 
 
 def test_otda():