Hi,

In the programming assignments, all my previous functions pass the tests, but when I go about combining them in the nn_model function, while it does not seem like there is an obvious error, the result is not what is expected. Any suggestion about how to investigate it (without pasting my code directly) ? My test output is below:

## Cost after iteration 0: 0.693159

Cost after iteration 1000: 0.693159

Cost after iteration 2000: 0.693159

Cost after iteration 3000: 0.693159

Cost after iteration 4000: 0.693159

Cost after iteration 5000: 0.693159

Cost after iteration 6000: 0.693159

Cost after iteration 7000: 0.693159

Cost after iteration 8000: 0.693159

Cost after iteration 9000: 0.693159

W1 = [[-0.00278734 0.01525596]

[-0.00484164 -0.0114673 ]

[ 0.01110381 0.01841291]

[-0.00604522 0.03017888]]

b1 = [[0.]

[0.]

[0.]

[0.]]

W2 = [[-0.01036626 -0.00577783 -0.00922438 0.0098561 ]]

b2 = [[0.]]

AssertionError Traceback (most recent call last)

in

----> 1 nn_model_test(nn_model)

~/work/release/W3A1/public_tests.py in nn_model_test(target)

292 assert output[“b2”].shape == expected_output[“b2”].shape, f"Wrong shape for b2."

293

→ 294 assert np.allclose(output[“W1”], expected_output[“W1”]), “Wrong values for W1”

295 assert np.allclose(output[“b1”], expected_output[“b1”]), “Wrong values for b1”

296 assert np.allclose(output[“W2”], expected_output[“W2”]), “Wrong values for W2”

AssertionError: Wrong values for W1

Expected output

Cost after iteration 0: 0.693198

Cost after iteration 1000: 0.000219

Cost after iteration 2000: 0.000108

…

Cost after iteration 8000: 0.000027

Cost after iteration 9000: 0.000024

W1 = [[ 0.71392202 1.31281102]

[-0.76411243 -1.41967065]

[-0.75040545 -1.38857337]

[ 0.56495575 1.04857776]]

b1 = [[-0.0073536 ]

[ 0.01534663]

[ 0.01262938]

[ 0.00218135]]

W2 = [[ 2.82545815 -3.3063945 -3.16116615 1.8549574 ]]

b2 = [[0.00393452]]

All tests passed!