def test_logistic_exception():
with pytest.raises(ValueError):
logi = F.Logistic(L=[1, 2])
with pytest.raises(ValueError):
logi = F.Logistic(k=[1, 2])
with pytest.raises(ValueError):
logi = F.Logistic(x0=[1, 2])
def test_logistic():
x = Variable(2)
logi = F.Logistic()
y = logi(x)
assert close(y.val, 1.0 / (1.0 + np.exp(-(2)))) and close(
y.grad,
(1.0 / (1.0 + np.exp(-(2)))) * (1.0 - (1.0 / (1.0 + np.exp(-(2))))))
def test_input_exception():
x = Variable([1, 1])
with pytest.raises(ValueError):
exp = F.Exponent()
y = exp(x)
with pytest.raises(ValueError):
sin = F.Sinus()
y = sin(x)
with pytest.raises(ValueError):
cos = F.Cosinus()
y = cos(x)
with pytest.raises(ValueError):
tan = F.Tangent()
y = tan(x)
with pytest.raises(ValueError):
arcsin = F.Arcsin()
y = arcsin(x)
with pytest.raises(ValueError):
arccos = F.Arccos()
y = arccos(x)
with pytest.raises(ValueError):
arctan = F.Arctan()
y = arctan(x)
with pytest.raises(ValueError):
sinh = F.Sinh()
y = sinh(x)
with pytest.raises(ValueError):
cosh = F.Cosh()
y = cosh(x)
with pytest.raises(ValueError):
tanh = F.Tanh()
y = tanh(x)
with pytest.raises(ValueError):
log = F.Log()
y = log(x)
with pytest.raises(ValueError):
logi = F.Logistic()
y = logi(x)
with pytest.raises(ValueError):
sqrt = F.Sqrt()
y = sqrt(x)