def test_misfits_computation():
response_dict = {}
for realization_index, values in enumerate(responses_values):
response_dict[realization_index] = pd.DataFrame(
[values], columns=["A", "B", "C", "D", "E", "F", "G", "H"]
)
observation_df = _get_dummy_observation_df()
misfits_df = calculate_misfits_from_pandas(
response_dict, observation_df, summary_misfits=False
)
for id_real in univariate_misfits_results:
assert_array_almost_equal(
univariate_misfits_results[id_real],
misfits_df.loc[id_real].values.flatten(),
decimal=4,
)
misfits_df = calculate_misfits_from_pandas(
response_dict, observation_df, summary_misfits=True
)
assert_array_almost_equal(
summary_misfits_results,
misfits_df.values.flatten(),
decimal=4,
)
async def get_response_misfits(
*,
db: Session = Depends(get_db),
ensemble_id: UUID,
response_name: str,
realization_index: Optional[int] = None,
summary_misfits: bool = False,
) -> Response:
"""
Compute univariate misfits for response(s)
"""
response_query = (db.query(ds.Record).filter(
ds.Record.observations != None).join(ds.RecordInfo).filter_by(
name=response_name,
record_type=ds.RecordType.f64_matrix,
).join(ds.Ensemble).filter_by(id=ensemble_id))
if realization_index is not None:
responses = [
response_query.filter(
ds.Record.realization_index == realization_index).one()
]
else:
responses = response_query.all()
observation_df = None
response_dict = {}
for response in responses:
data_df = pd.DataFrame(response.f64_matrix.content)
labels = response.f64_matrix.labels
if labels is not None:
data_df.columns = labels[0]
data_df.index = labels[1]
response_dict[response.realization_index] = data_df
if observation_df is None:
# currently we expect only a single observation object, while
# later in the future this might change
obs = response.observations[0]
observation_df = pd.DataFrame(data={
"values": obs.values,
"errors": obs.errors
},
index=obs.x_axis)
try:
result_df = calculate_misfits_from_pandas(response_dict,
observation_df,
summary_misfits)
except Exception as misfits_exc:
raise exc.UnprocessableError(
f"Unable to compute misfits: {misfits_exc}")
return Response(
content=result_df.to_csv().encode(),
media_type="text/csv",
)
async def get_response_misfits(
*,
res: LibresFacade = Depends(get_res),
ensemble_id: UUID,
response_name: str,
realization_index: Optional[int] = None,
summary_misfits: bool = False,
) -> Response:
ensemble_name = get_name("ensemble", ensemble_id)
dataframe = data_for_key(res, ensemble_name, response_name)
if realization_index is not None:
dataframe = pd.DataFrame(dataframe.loc[realization_index]).T
response_dict = {}
for index, data in dataframe.iterrows():
data_df = pd.DataFrame(data).T
response_dict[index] = data_df
obs_keys = res.observation_keys(response_name)
obs = observations_for_obs_keys(res, ensemble_name, obs_keys)
if not obs_keys:
raise ValueError(f"No observations for key {response_name}")
if not obs:
raise ValueError(f"Cant fetch observations for key {response_name}")
o = obs[0]
def parse_index(x):
try:
return int(x)
except ValueError:
return parse(x)
observation_df = pd.DataFrame(
data={
"values": o["values"],
"errors": o["errors"]
},
index=[parse_index(x) for x in o["x_axis"]],
)
try:
result_df = calculate_misfits_from_pandas(response_dict,
observation_df,
summary_misfits)
except Exception as misfits_exc:
raise exc.UnprocessableError(
f"Unable to compute misfits: {misfits_exc}") from misfits_exc
return Response(
content=result_df.to_csv().encode(),
media_type="text/csv",
)
def test_misfits_observations_match_response_values():
# response values are the same as observed values we expect zero misfits
data_df = _get_dummy_response_df()
observation_df = _get_dummy_observation_df()
# set values to match observations
data_df.loc[0, observation["x_axis"]] = observation_df["values"].values
misfits_df = calculate_misfits_from_pandas(
{0: data_df}, observation_df, summary_misfits=False
)
assert_array_almost_equal(
np.zeros(3),
misfits_df.values.flatten(),
decimal=4,
)
def test_misfits_increasing_observation_error():
# increasing erros should provide lower values of misfits
data_df = _get_dummy_response_df()
observation_df = _get_dummy_observation_df()
misfits_increased_error = {}
for idx in range(3):
# increase the error
observation_df["errors"] += 1
misfits_increased_error[idx] = (
calculate_misfits_from_pandas(
{0: data_df}, observation_df, summary_misfits=False
)
.abs() # required as univariate misfits now come with a sign
.values.flatten()
)
assert_array_less(misfits_increased_error[1], misfits_increased_error[0])
assert_array_less(misfits_increased_error[2], misfits_increased_error[1])
def test_misfits_increasing_response_values():
# increasing response values compared to observation mean should
# provide higher values of misfits
data_df = _get_dummy_response_df()
observation_df = _get_dummy_observation_df()
misfits_increased_responses = {}
for idx in range(3):
# set response values as observation values and add a constant
data_df.loc[0, observation["x_axis"]] = observation_df["values"] + idx
misfits_increased_responses[idx] = (
calculate_misfits_from_pandas(
{0: data_df}, observation_df, summary_misfits=False
)
.abs() # required as univariate misfits now come with a sign
.values.flatten()
)
assert_array_less(misfits_increased_responses[0], misfits_increased_responses[1])
assert_array_less(misfits_increased_responses[1], misfits_increased_responses[2])
