def test_reset_states(self): fn_obj = metrics.FalseNegatives() model = _get_simple_sequential_model([fn_obj]) x = np.zeros((100, 4)) y = np.ones((100, 1)) model.evaluate(x, y) self.assertEqual(self.evaluate(fn_obj.accumulator), 100.) model.evaluate(x, y) self.assertEqual(self.evaluate(fn_obj.accumulator), 100.)
def test_weighted(self):
fn_obj = metrics.FalseNegatives()
self.evaluate(variables.variables_initializer(fn_obj.variables))
y_true = constant_op.constant(((0, 1, 0, 1, 0), (0, 0, 1, 1, 1),
(1, 1, 1, 1, 0), (0, 0, 0, 0, 1)))
y_pred = constant_op.constant(((0, 0, 1, 1, 0), (1, 1, 1, 1, 1),
(0, 1, 0, 1, 0), (1, 1, 1, 1, 1)))
sample_weight = constant_op.constant((1., 1.5, 2., 2.5))
result = fn_obj(y_true, y_pred, sample_weight=sample_weight)
self.assertAllClose([5.], self.evaluate(result))
def test_config(self):
fn_obj = metrics.FalseNegatives(name='my_fn', thresholds=[0.4, 0.9])
self.assertEqual(fn_obj.name, 'my_fn')
self.assertEqual(len(fn_obj.variables), 1)
self.assertEqual(fn_obj.thresholds, [0.4, 0.9])
# Check save and restore config
fn_obj2 = metrics.FalseNegatives.from_config(fn_obj.get_config())
self.assertEqual(fn_obj2.name, 'my_fn')
self.assertEqual(len(fn_obj2.variables), 1)
self.assertEqual(fn_obj2.thresholds, [0.4, 0.9])
def test_weighted_with_thresholds(self):
fn_obj = metrics.FalseNegatives(thresholds=[0.15, 0.5, 0.85])
self.evaluate(variables.variables_initializer(fn_obj.variables))
y_pred = constant_op.constant(((0.9, 0.2, 0.8, 0.1), (0.2, 0.9, 0.7, 0.6),
(0.1, 0.2, 0.4, 0.3), (0, 1, 0.7, 0.3)))
y_true = constant_op.constant(((0, 1, 1, 0), (1, 0, 0, 0), (0, 0, 0, 0),
(1, 1, 1, 1)))
sample_weight = ((3.0,), (5.0,), (7.0,), (4.0,))
result = fn_obj(y_true, y_pred, sample_weight=sample_weight)
self.assertAllClose([4., 16., 23.], self.evaluate(result))
def test_unweighted_with_thresholds(self):
fn_obj = metrics.FalseNegatives(thresholds=[0.15, 0.5, 0.85])
self.evaluate(variables.variables_initializer(fn_obj.variables))
y_pred = constant_op.constant(((0.9, 0.2, 0.8, 0.1), (0.2, 0.9, 0.7, 0.6),
(0.1, 0.2, 0.4, 0.3), (0, 1, 0.7, 0.3)))
y_true = constant_op.constant(((0, 1, 1, 0), (1, 0, 0, 0), (0, 0, 0, 0),
(1, 1, 1, 1)))
update_op = fn_obj.update_state(y_true, y_pred)
self.evaluate(update_op)
result = fn_obj.result()
self.assertAllClose([1., 4., 6.], result)
def test_unweighted(self):
fn_obj = metrics.FalseNegatives()
self.evaluate(variables.variables_initializer(fn_obj.variables))
y_true = constant_op.constant(((0, 1, 0, 1, 0), (0, 0, 1, 1, 1),
(1, 1, 1, 1, 0), (0, 0, 0, 0, 1)))
y_pred = constant_op.constant(((0, 0, 1, 1, 0), (1, 1, 1, 1, 1),
(0, 1, 0, 1, 0), (1, 1, 1, 1, 1)))
update_op = fn_obj.update_state(y_true, y_pred)
self.evaluate(update_op)
result = fn_obj.result()
self.assertAllClose([3.], result)
def test_config(self): fn_obj = metrics.FalseNegatives(name='my_fn', thresholds=[0.4, 0.9]) self.assertEqual(fn_obj.name, 'my_fn') self.assertEqual(len(fn_obj.variables), 1) self.assertEqual(fn_obj.thresholds, [0.4, 0.9])
