[OpenVINO Backend] numpy.empty implementation

Author: arkhamHack

keras/src/backend/openvino/excluded_concrete_tests.txt

@@ -22,7 +22,6 @@ NumpyDtypeTest::test_diag
 NumpyDtypeTest::test_diff
 NumpyDtypeTest::test_digitize
 NumpyDtypeTest::test_einsum
-NumpyDtypeTest::test_empty
 NumpyDtypeTest::test_exp2
 NumpyDtypeTest::test_expm1
 NumpyDtypeTest::test_eye

keras/src/backend/openvino/numpy.py

@@ -362,7 +362,7 @@ def average(x, axis=None, weights=None):
         x_type = x.get_element_type()
         weights_type = weights.get_element_type()
         if (weights_type.is_integral() or weights_type == Type.boolean) and (
-            x_type.is_integral() or x_type == Type.boolean
+                x_type.is_integral() or x_type == Type.boolean
         ):
             x = ov_opset.convert(x, Type.f32).output(0)
             weights = ov_opset.convert(weights, Type.f32).output(0)
@@ -565,7 +565,16 @@ def dot(x, y):
 
 
 def empty(shape, dtype=None):
-    raise NotImplementedError("`empty` is not supported with openvino backend")
+    if dtype is not None:
+        ov_type = OPENVINO_DTYPES[standardize_dtype(dtype)]
+    else:
+        ov_type = Type.f32
+    if isinstance(shape, tuple):
+        shape = list(shape)
+    elif isinstance(shape, int):
+        shape = [shape]
+    empty_tensor = ov_opset.parameter(shape, ov_type).output(0)
+    return OpenVINOKerasTensor(empty_tensor)
 
 
 def equal(x1, x2):
@@ -712,7 +721,7 @@ def less_equal(x1, x2):
 
 
 def linspace(
-    start, stop, num=50, endpoint=True, retstep=False, dtype=None, axis=0
+        start, stop, num=50, endpoint=True, retstep=False, dtype=None, axis=0
 ):
     raise NotImplementedError(
         "`linspace` is not supported with openvino backend"