def run(self, trial: Trial) -> TrialReport: # pragma: no cover
judge = _NonIterativeJudgeWrapper(self._budget)
base_fs = FileSystem()
fs = base_fs.makedirs(self._checkpoint_path, recreate=True)
self._func = self._func.copy()
self._func.run(trial, judge=judge, checkpoint_basedir_fs=fs)
return judge.report
def _compute(
self,
df: Iterable[Dict[str, Any]],
entrypoint: Callable[[str, Dict[str, Any]], Any],
) -> Iterable[Dict[str, Any]]:
fs = FileSystem()
ck_fs = fs.makedirs(self._checkpoint_path, recreate=True)
for row in df:
for trial in _get_trials_from_row(row):
rjudge = RemoteTrialJudge(entrypoint)
self._objective.copy().run(trial, rjudge, ck_fs)
if rjudge.report is not None:
yield rjudge.report.fill_dict(dict(row))
def optimize_by_continuous_asha(
objective: Any,
dataset: TuneDataset,
plan: List[Tuple[float, int]],
checkpoint_path: str = "",
always_checkpoint: bool = False,
study_early_stop: Optional[Callable[[List[Any], List[RungHeap]], bool]] = None,
trial_early_stop: Optional[
Callable[[TrialReport, List[TrialReport], List[RungHeap]], bool]
] = None,
monitor: Any = None,
) -> StudyResult:
_objective = TUNE_OBJECT_FACTORY.make_iterative_objective(objective)
_monitor = TUNE_OBJECT_FACTORY.make_monitor(monitor)
checkpoint_path = TUNE_OBJECT_FACTORY.get_path_or_temp(checkpoint_path)
judge = ASHAJudge(
schedule=plan,
always_checkpoint=always_checkpoint,
study_early_stop=study_early_stop,
trial_early_stop=trial_early_stop,
monitor=_monitor,
)
path = os.path.join(checkpoint_path, str(uuid4()))
FileSystem().makedirs(path, recreate=True)
study = IterativeStudy(_objective, checkpoint_path=path)
return study.optimize(dataset, judge=judge)
def _sk_cv(
_sk__model: str,
_sk__train_df: pd.DataFrame,
_sk__scoring: Any,
_sk__cv: int = 5,
_sk__feature_prefix: str = "",
_sk__label_col: str = "label",
_sk__save_path: str = "",
**kwargs: Any,
) -> Dict[str, Any]:
model = _to_model(_sk__model)(**kwargs)
train_df = _sk__train_df.sample(frac=1,
random_state=0).reset_index(drop=True)
train_x = train_df.drop([_sk__label_col], axis=1)
cols = [x for x in train_x.columns if x.startswith(_sk__feature_prefix)]
train_x = train_x[cols]
train_y = train_df[_sk__label_col]
s = cross_val_score(model,
train_x,
train_y,
cv=_sk__cv,
scoring=_sk__scoring)
metadata = dict(sk_model=_sk__model, cv_scores=[float(x) for x in s])
if _sk__save_path != "":
model.fit(train_x, train_y)
fp = os.path.join(_sk__save_path, str(uuid4()) + ".pkl")
with FileSystem().openbin(fp, mode="wb") as f:
pickle.dump(model, f)
metadata["model_path"] = fp
return dict(error=-np.mean(s),
hp=dict(_sk__model=_sk__model, **kwargs),
metadata=metadata)
def run(self, trial: Trial) -> TrialReport:
params = dict(trial.params)
if trial.trial_id != self._last_id:
self._model_type = to_sk_model(params.pop(SPACE_MODEL_NAME))
self._model_expr = to_sk_model_expr(self._model_type)
self._train_x, self._train_y = self._reset_xy(
trial.dfs[TUNE_DATASET_DF_DEFAULT_NAME]
)
self._test_x, self._test_y = self._reset_xy(
trial.dfs[TUNE_DATASET_VALIDATION_DF_DEFAULT_NAME]
)
self._last_id = trial.trial_id
else:
params.pop(SPACE_MODEL_NAME)
model = self._model_type(**params).fit(self._train_x, self._train_y)
metric = get_scorer(self._scoring)(model, self._test_x, self._test_y)
metadata = dict(model=self._model_expr)
if self._checkpoint_path is not None:
fp = os.path.join(self._checkpoint_path, str(uuid4()) + ".pkl")
with FileSystem().openbin(fp, mode="wb") as f:
pickle.dump(model, f)
metadata["checkpoint_path"] = fp
return TrialReport(
trial,
metric=metric,
metadata=metadata,
sort_metric=self.generate_sort_metric(metric),
)
def run(self, trial: Trial) -> TrialReport:
params = dict(trial.params)
if trial.trial_id != self._last_id:
self._model_type = to_sk_model(params.pop(SPACE_MODEL_NAME))
self._model_expr = to_sk_model_expr(self._model_type)
self._train_x, self._train_y = self._reset_xy(
trial.dfs[TUNE_DATASET_DF_DEFAULT_NAME]
)
self._last_id = trial.trial_id
else:
params.pop(SPACE_MODEL_NAME)
model = self._model_type(**params)
s = cross_val_score(
model, self._train_x, self._train_y, cv=self._cv, scoring=self._scoring
)
metadata = dict(model=self._model_expr, cv_scores=[float(x) for x in s])
if self._checkpoint_path is not None:
model.fit(self._train_x, self._train_y)
fp = os.path.join(self._checkpoint_path, str(uuid4()) + ".pkl")
with FileSystem().openbin(fp, mode="wb") as f:
pickle.dump(model, f)
metadata["checkpoint_path"] = fp
metric = float(np.mean(s))
return TrialReport(
trial,
metric=metric,
metadata=metadata,
sort_metric=self.generate_sort_metric(metric),
)
def test_checkpoint(tmpdir):
fs = FileSystem().opendir(str(tmpdir))
cp = Checkpoint(fs)
assert 0 == len(cp)
with raises(AssertionError):
cp.latest
try:
for i in range(4):
with cp.create() as sfs:
sfs.writetext("a.txt", str(i))
if i == 3:
raise Exception
except Exception:
pass
assert 3 == len(cp)
assert "2" == cp.latest.readtext("a.txt")
files = fs.listdir(".")
assert 4 == len(files)
cp2 = Checkpoint(fs)
assert 3 == len(cp2)
assert "2" == cp2.latest.readtext("a.txt")
def test_objective_func(tmpdir):
fs = FileSystem().opendir(str(tmpdir))
j = J([3, 3, 2])
f = F().copy()
t = Trial("abc", {"a": 1})
f.run(t, judge=j, checkpoint_basedir_fs=fs)
assert -10 == f.v
f.run(t, judge=j, checkpoint_basedir_fs=fs)
assert -10 == f.v
assert 6.0 == j.report.metric
assert -6.0 == j.report.sort_metric
f.run(t, judge=j, checkpoint_basedir_fs=fs)
assert -10 == f.v
assert 8.0 == j.report.metric
assert -8.0 == j.report.sort_metric
def __init__(self, spark_session: Optional[SparkSession] = None, conf: Any = None):
if spark_session is None:
spark_session = SparkSession.builder.getOrCreate()
self._spark_session = spark_session
cf = dict(FUGUE_SPARK_DEFAULT_CONF)
cf.update({x[0]: x[1] for x in spark_session.sparkContext.getConf().getAll()})
cf.update(ParamDict(conf))
super().__init__(cf)
self._fs = FileSystem()
self._log = logging.getLogger()
self._broadcast_func = RunOnce(
self._broadcast, lambda *args, **kwargs: id(args[0])
)
self._persist_func = RunOnce(self._persist, lambda *args, **kwargs: id(args[0]))
self._register_func = RunOnce(
self._register, lambda *args, **kwargs: id(args[0])
)
self._io = SparkIO(self.spark_session, self.fs)
def test_serialize_df(tmpdir):
def assert_eq(df, df_expected=None, raw=False):
if df_expected is None:
df_expected = df
df_actual = deserialize_df(serialize_df(df))
if raw:
assert df_expected.native == df_actual.native
else:
df_eq(df_expected, df_actual, throw=True)
fs = FileSystem()
assert deserialize_df(serialize_df(None)) is None
assert_eq(ArrayDataFrame([], "a:int,b:int"))
assert_eq(ArrayDataFrame([[None, None]], "a:int,b:int"))
assert_eq(ArrayDataFrame([[None, "abc"]], "a:int,b:str"))
assert_eq(ArrayDataFrame([[None, [1, 2], dict(x=1)]],
"a:int,b:[int],c:{x:int}"),
raw=True)
assert_eq(
IterableDataFrame([[None, [1, 2], dict(x=1)]],
"a:int,b:[int],c:{x:int}"),
ArrayDataFrame([[None, [1, 2], dict(x=1)]], "a:int,b:[int],c:{x:int}"),
raw=True,
)
assert_eq(PandasDataFrame([[None, None]], "a:int,b:int"))
assert_eq(PandasDataFrame([[None, "abc"]], "a:int,b:str"))
raises(
InvalidOperationError,
lambda: serialize_df(ArrayDataFrame([], "a:int,b:int"), 0),
)
path = os.path.join(tmpdir, "1.pkl")
df = ArrayDataFrame([[None, None]], "a:int,b:int")
s = serialize_df(df, 0, path, fs)
df_eq(df, deserialize_df(s, fs), throw=True)
df_eq(df, deserialize_df(s), throw=True)
s = serialize_df(df, 0, path)
df_eq(df, deserialize_df(s), throw=True)
raises(ValueError, lambda: deserialize_df('{"x":1}'))
def load_checkpoint(self, fs: FSBase, model: keras.models.Model) -> None:
with tempfile.NamedTemporaryFile(suffix=".h5") as tf:
local_fs = FileSystem()
with fs.open("model.h5", "rb") as fin:
local_fs.writefile(tf.name, fin)
model.load_weights(tf.name)
def _sk_stack_cv(
_sk__model: str,
_sk__estimators: str,
_sk__train_df: pd.DataFrame,
_sk__scoring: Any,
_sk__stack_cv: int = 2,
_sk__method: str = "auto",
_sk__passthrough: bool = False,
_sk__cv: int = 5,
_sk__feature_prefix: str = "",
_sk__label_col: str = "label",
_sk__save_path: str = "",
**kwargs: Any,
) -> Dict[str, Any]:
final_estimator = _to_model(_sk__model)(**kwargs)
estimators: List[Tuple[str, Any]] = []
for i, d in enumerate(json.loads(_sk__estimators)):
key = f"_{i}"
m = _to_model(d.pop("_sk__model"))
estimators.append((key, m(**d)))
if is_classifier(final_estimator):
model = StackingClassifier(
estimators,
final_estimator,
cv=_sk__stack_cv,
stack_method=_sk__method,
passthrough=_sk__passthrough,
n_jobs=kwargs.get("n_jobs", 1),
)
else:
model = StackingRegressor(
estimators,
final_estimator,
cv=_sk__stack_cv,
passthrough=_sk__passthrough,
n_jobs=kwargs.get("n_jobs", 1),
)
train_df = _sk__train_df.sample(frac=1,
random_state=0).reset_index(drop=True)
train_x = train_df.drop([_sk__label_col], axis=1)
cols = [x for x in train_x.columns if x.startswith(_sk__feature_prefix)]
train_x = train_x[cols]
train_y = train_df[_sk__label_col]
s = cross_val_score(model,
train_x,
train_y,
cv=_sk__cv,
scoring=_sk__scoring)
metadata = dict(sk_model=get_full_type_path(model),
cv_scores=[float(x) for x in s])
if _sk__save_path != "":
model.fit(train_x, train_y)
fp = os.path.join(_sk__save_path, str(uuid4()) + ".pkl")
with FileSystem().openbin(fp, mode="wb") as f:
pickle.dump(model, f)
metadata["model_path"] = fp
return dict(
error=-np.mean(s),
hp=dict(
_sk__model=get_full_type_path(model),
_sk__estimators=dict(
**{
f"_{i}": d
for i, d in enumerate(json.loads(_sk__estimators))
},
stacking=dict(_sk__model=_sk__model, **kwargs),
),
_sk__stack_cv=_sk__stack_cv,
_sk__method=_sk__method,
_sk__passthrough=_sk__passthrough,
),
metadata=metadata,
)
