Implemented x.dot(y) for tensor variables.

theano/tensor/basic.py

@@ -1732,6 +1732,8 @@ class _tensor_py_operators:
     def __rdot__(right, left):
         return dot(left, right)
 
+    dot = __dot__
+    
     def sum(self, axis=None, dtype=None, keepdims=False):
         """See `theano.tensor.sum`"""
         return sum(self, axis=axis, dtype=dtype, keepdims=keepdims)

theano/tensor/tests/test_basic.py

@@ -7001,6 +7001,18 @@ class TestInferShape(utt.InferShapeTester):
                                 [tile(adtens4, aivec_val, ndim)],
                                 [adtens4_val], Tile)
 
+class TestTensorInstanceMethods(unittest.TestCase):
+    def setUp(self):
+        self.vars = matrices('X', 'Y')
+        self.vals = [rand(2,2),rand(2,2)]
+
+    def test_dot(self):
+        X, Y = self.vars
+        x, y = self.vals
+        self.assertTrue(numpy.all(x.dot(y) == X.dot(Y).eval({X: x, Y: y})))
+        Z = X.dot(Y)
+        z = x.dot(y)
+        self.assertTrue(numpy.all(x.dot(z) == X.dot(Z).eval({X: x, Z: z})))
         
 if __name__ == '__main__':