#!/usr/bin/env python3
# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
from collections import OrderedDict
from datetime import datetime, timedelta
from logging import Logger
from pathlib import Path
from typing import (
Any,
cast,
Dict,
Iterable,
List,
MutableMapping,
Optional,
Set,
Tuple,
Type,
)
import numpy as np
import pandas as pd
import torch
from ax.core.arm import Arm
from ax.core.base_trial import BaseTrial, TrialStatus
from ax.core.batch_trial import AbandonedArm, BatchTrial
from ax.core.data import Data
from ax.core.experiment import DataType, Experiment
from ax.core.generation_strategy_interface import GenerationStrategyInterface
from ax.core.generator_run import GeneratorRun
from ax.core.map_data import MapData, MapKeyInfo
from ax.core.map_metric import MapMetric
from ax.core.metric import Metric
from ax.core.multi_type_experiment import MultiTypeExperiment
from ax.core.objective import MultiObjective, Objective, ScalarizedObjective
from ax.core.observation import ObservationFeatures
from ax.core.optimization_config import (
MultiObjectiveOptimizationConfig,
OptimizationConfig,
)
from ax.core.outcome_constraint import (
ObjectiveThreshold,
OutcomeConstraint,
ScalarizedOutcomeConstraint,
)
from ax.core.parameter import (
ChoiceParameter,
FixedParameter,
Parameter,
ParameterType,
RangeParameter,
)
from ax.core.parameter_constraint import (
OrderConstraint,
ParameterConstraint,
SumConstraint,
)
from ax.core.parameter_distribution import ParameterDistribution
from ax.core.risk_measures import RiskMeasure
from ax.core.runner import Runner
from ax.core.search_space import HierarchicalSearchSpace, RobustSearchSpace, SearchSpace
from ax.core.trial import Trial
from ax.core.types import (
ComparisonOp,
TModelCov,
TModelMean,
TModelPredict,
TModelPredictArm,
TParameterization,
)
from ax.early_stopping.strategies import (
BaseEarlyStoppingStrategy,
PercentileEarlyStoppingStrategy,
ThresholdEarlyStoppingStrategy,
)
from ax.early_stopping.strategies.logical import (
AndEarlyStoppingStrategy,
OrEarlyStoppingStrategy,
)
from ax.exceptions.core import UserInputError
from ax.global_stopping.strategies.base import BaseGlobalStoppingStrategy
from ax.global_stopping.strategies.improvement import ImprovementGlobalStoppingStrategy
from ax.metrics.branin import AugmentedBraninMetric, BraninMetric
from ax.metrics.branin_map import BraninTimestampMapMetric
from ax.metrics.dict_lookup import DictLookupMetric
from ax.metrics.factorial import FactorialMetric
from ax.metrics.hartmann6 import AugmentedHartmann6Metric, Hartmann6Metric
from ax.modelbridge.factory import Cont_X_trans, get_factorial, get_sobol
from ax.modelbridge.generation_strategy import GenerationStrategy
from ax.models.torch.botorch_modular.acquisition import Acquisition
from ax.models.torch.botorch_modular.model import BoTorchModel, SurrogateSpec
from ax.models.torch.botorch_modular.sebo import SEBOAcquisition
from ax.models.torch.botorch_modular.surrogate import Surrogate
from ax.models.winsorization_config import WinsorizationConfig
from ax.runners.synthetic import SyntheticRunner
from ax.service.utils.scheduler_options import SchedulerOptions, TrialType
from ax.utils.common.constants import Keys
from ax.utils.common.logger import get_logger
from ax.utils.common.typeutils import checked_cast, not_none
from ax.utils.measurement.synthetic_functions import branin
from botorch.acquisition.acquisition import AcquisitionFunction
from botorch.acquisition.monte_carlo import qExpectedImprovement
from botorch.models.gp_regression import SingleTaskGP
from botorch.models.model import Model
from botorch.models.transforms.input import ChainedInputTransform, Normalize, Round
from botorch.utils.datasets import SupervisedDataset
from gpytorch.constraints import Interval
from gpytorch.mlls.exact_marginal_log_likelihood import ExactMarginalLogLikelihood
from gpytorch.mlls.marginal_log_likelihood import MarginalLogLikelihood
from gpytorch.priors.torch_priors import GammaPrior
logger: Logger = get_logger(__name__)
TEST_SOBOL_SEED = 1234
##############################
# Experiments
##############################
[docs]def get_experiment(
with_status_quo: bool = True, constrain_search_space: bool = True
) -> Experiment:
return Experiment(
name="test",
search_space=get_search_space(constrain_search_space=constrain_search_space),
optimization_config=get_optimization_config(),
status_quo=get_status_quo() if with_status_quo else None,
description="test description",
tracking_metrics=[Metric(name="tracking")],
is_test=True,
)
[docs]def get_experiment_with_map_data_type() -> Experiment:
return Experiment(
name="test_map_data",
search_space=get_search_space(),
optimization_config=get_map_optimization_config(),
status_quo=get_status_quo(),
description="test description",
tracking_metrics=[MapMetric(name="tracking")],
is_test=True,
default_data_type=DataType.MAP_DATA,
)
[docs]def get_experiment_with_custom_runner_and_metric(
constrain_search_space: bool = True,
immutable: bool = False,
multi_objective: bool = False,
) -> Experiment:
# Create experiment with custom runner and metric
experiment = Experiment(
name="test",
# Omit constraints to prevent Sobol rejection sampling below,
# which floods logs with "Unable to round" warnings.
search_space=get_search_space(constrain_search_space=constrain_search_space),
optimization_config=get_multi_objective_optimization_config(custom_metric=True)
if multi_objective
else get_optimization_config(),
description="test description",
tracking_metrics=[
CustomTestMetric(name="custom_test_metric", test_attribute="test")
],
runner=CustomTestRunner(test_attribute="test"),
is_test=True,
)
# Create a trial, set its runner and complete it.
sobol_generator = get_sobol(search_space=experiment.search_space)
sobol_run = sobol_generator.gen(n=1)
trial = experiment.new_trial(generator_run=sobol_run)
trial.runner = experiment.runner
trial.mark_running()
experiment.attach_data(get_data(metric_name="custom_test_metric"))
trial.mark_completed()
if immutable:
experiment._properties = {Keys.IMMUTABLE_SEARCH_SPACE_AND_OPT_CONF: True}
return experiment
[docs]def get_branin_experiment(
has_optimization_config: bool = True,
with_batch: bool = False,
with_trial: bool = False,
with_status_quo: bool = False,
with_fidelity_parameter: bool = False,
with_choice_parameter: bool = False,
with_str_choice_param: bool = False,
search_space: Optional[SearchSpace] = None,
minimize: bool = False,
named: bool = True,
with_completed_trial: bool = False,
) -> Experiment:
search_space = search_space or get_branin_search_space(
with_fidelity_parameter=with_fidelity_parameter,
with_choice_parameter=with_choice_parameter,
with_str_choice_param=with_str_choice_param,
)
exp = Experiment(
name="branin_test_experiment" if named else None,
search_space=search_space,
optimization_config=get_branin_optimization_config(minimize=minimize)
if has_optimization_config
else None,
runner=SyntheticRunner(),
is_test=True,
)
if with_status_quo:
exp.status_quo = Arm(parameters={"x1": 0.0, "x2": 0.0})
if with_batch:
sobol_generator = get_sobol(search_space=exp.search_space)
sobol_run = sobol_generator.gen(n=15)
exp.new_batch_trial(optimize_for_power=with_status_quo).add_generator_run(
sobol_run
)
if with_trial or with_completed_trial:
sobol_generator = get_sobol(search_space=exp.search_space)
sobol_run = sobol_generator.gen(n=1)
trial = exp.new_trial(generator_run=sobol_run)
if with_completed_trial:
trial.mark_running(no_runner_required=True)
exp.attach_data(get_branin_data(trials=[trial])) # Add data for one trial
trial.mark_completed()
return exp
[docs]def get_branin_experiment_with_status_quo_trials(
num_sobol_trials: int = 5,
multi_objective: bool = False,
) -> Tuple[Experiment, ObservationFeatures]:
if multi_objective:
exp = get_branin_experiment_with_multi_objective(
with_batch=True,
with_status_quo=True,
)
else:
exp = get_branin_experiment()
sobol = get_sobol(search_space=exp.search_space)
for _ in range(num_sobol_trials):
sobol_run = sobol.gen(n=1)
t = exp.new_batch_trial().add_generator_run(sobol_run)
t.set_status_quo_with_weight(status_quo=t.arms[0], weight=0.5)
t.run().mark_completed()
status_quo_features = ObservationFeatures(
parameters=exp.trials[0].status_quo.parameters, # pyre-fixme [16]
trial_index=0,
)
return exp, status_quo_features
[docs]def get_robust_branin_experiment(
risk_measure: Optional[RiskMeasure] = None,
optimization_config: Optional[OptimizationConfig] = None,
num_sobol_trials: int = 2,
) -> Experiment:
x1_dist = ParameterDistribution(
parameters=["x1"], distribution_class="norm", distribution_parameters={}
)
search_space = RobustSearchSpace(
parameters=[
RangeParameter(
name="x1", parameter_type=ParameterType.FLOAT, lower=-5, upper=10
),
RangeParameter(
name="x2", parameter_type=ParameterType.FLOAT, lower=0, upper=15
),
],
parameter_distributions=[x1_dist],
num_samples=16,
)
risk_measure = risk_measure or RiskMeasure(
risk_measure="CVaR",
options={"n_w": 16, "alpha": 0.8},
)
optimization_config = optimization_config or OptimizationConfig(
objective=Objective(
metric=BraninMetric(
name="branin_metric", param_names=["x1", "x2"], lower_is_better=True
),
minimize=True,
),
risk_measure=risk_measure,
)
exp = Experiment(
name="branin_experiment",
search_space=search_space,
optimization_config=optimization_config,
runner=SyntheticRunner(),
)
sobol = get_sobol(search_space=exp.search_space)
for _ in range(num_sobol_trials):
exp.new_trial(generator_run=sobol.gen(1)).run().mark_completed()
return exp
[docs]def get_branin_experiment_with_timestamp_map_metric(
with_status_quo: bool = False,
rate: Optional[float] = None,
map_tracking_metric: bool = False,
) -> Experiment:
def get_map_metric(name: str) -> BraninTimestampMapMetric:
return BraninTimestampMapMetric(
name=name,
param_names=["x1", "x2"],
rate=rate,
lower_is_better=True,
)
tracking_metric = (
get_map_metric("tracking_branin_map")
if map_tracking_metric
else BraninMetric(name="branin", param_names=["x1", "x2"])
)
exp = Experiment(
name="branin_with_timestamp_map_metric",
search_space=get_branin_search_space(),
optimization_config=OptimizationConfig(
objective=Objective(metric=get_map_metric("branin_map"), minimize=True)
),
tracking_metrics=[tracking_metric],
runner=SyntheticRunner(),
default_data_type=DataType.MAP_DATA,
)
if with_status_quo:
exp.status_quo = Arm(parameters={"x1": 0.0, "x2": 0.0})
return exp
[docs]def run_branin_experiment_with_generation_strategy(
generation_strategy: GenerationStrategy,
num_trials: int = 6,
kwargs_for_get_branin_experiment: Optional[Dict[str, Any]] = None,
) -> Experiment:
"""Gets a Branin experiment using any given kwargs and runs
num_trials trials using the given generation strategy."""
kwargs_for_get_branin_experiment = kwargs_for_get_branin_experiment or {}
exp = get_branin_experiment(**kwargs_for_get_branin_experiment)
for _ in range(num_trials):
gr = generation_strategy.gen(n=1, experiment=exp)
trial = exp.new_trial(generator_run=gr)
trial.mark_running(no_runner_required=True)
exp.attach_data(get_branin_data(trials=[trial]))
trial.mark_completed()
return exp
[docs]def get_test_map_data_experiment(
num_trials: int,
num_fetches: int,
num_complete: int,
map_tracking_metric: bool = False,
) -> Experiment:
experiment = get_branin_experiment_with_timestamp_map_metric(
rate=0.5, map_tracking_metric=map_tracking_metric
)
for i in range(num_trials):
trial = experiment.new_trial().add_arm(arm=get_branin_arms(n=1, seed=i)[0])
trial.run()
for _ in range(num_fetches):
# each time we call fetch, we grab another timestamp
experiment.fetch_data()
for i in range(num_complete):
experiment.trials[i].mark_as(status=TrialStatus.COMPLETED)
experiment.attach_data(data=experiment.fetch_data())
return experiment
[docs]def get_multi_type_experiment(
add_trial_type: bool = True, add_trials: bool = False, num_arms: int = 10
) -> MultiTypeExperiment:
oc = OptimizationConfig(Objective(BraninMetric("m1", ["x1", "x2"])))
experiment = MultiTypeExperiment(
name="test_exp",
search_space=get_branin_search_space(),
default_trial_type="type1",
default_runner=SyntheticRunner(dummy_metadata="dummy1"),
optimization_config=oc,
)
experiment.add_trial_type(
trial_type="type2", runner=SyntheticRunner(dummy_metadata="dummy2")
)
# Switch the order of variables so metric gives different results
experiment.add_tracking_metric(
BraninMetric("m2", ["x2", "x1"]), trial_type="type2", canonical_name="m1"
)
if add_trials and add_trial_type:
generator = get_sobol(experiment.search_space)
gr = generator.gen(num_arms)
t1 = experiment.new_batch_trial(generator_run=gr, trial_type="type1")
t2 = experiment.new_batch_trial(generator_run=gr, trial_type="type2")
t1.set_status_quo_with_weight(status_quo=t1.arms[0], weight=0.5)
t2.set_status_quo_with_weight(status_quo=t2.arms[0], weight=0.5)
t1.run()
t2.run()
return experiment
[docs]def get_multi_type_experiment_with_multi_objective(
add_trials: bool = False,
) -> MultiTypeExperiment:
oc = get_branin_multi_objective_optimization_config()
experiment = MultiTypeExperiment(
name="test_exp",
search_space=get_branin_search_space(),
default_trial_type="type1",
default_runner=SyntheticRunner(dummy_metadata="dummy1"),
optimization_config=oc,
)
experiment.add_trial_type(
trial_type="type2", runner=SyntheticRunner(dummy_metadata="dummy2")
)
if add_trials:
generator = get_sobol(experiment.search_space)
gr = generator.gen(10)
t1 = experiment.new_batch_trial(generator_run=gr, trial_type="type1")
t2 = experiment.new_batch_trial(generator_run=gr, trial_type="type2")
t1.set_status_quo_with_weight(status_quo=t1.arms[0], weight=0.5)
t2.set_status_quo_with_weight(status_quo=t2.arms[0], weight=0.5)
t1.run()
t2.run()
return experiment
[docs]def get_factorial_experiment(
has_optimization_config: bool = True,
with_batch: bool = False,
with_status_quo: bool = False,
) -> Experiment:
exp = Experiment(
name="factorial_test_experiment",
search_space=get_factorial_search_space(),
optimization_config=OptimizationConfig(
objective=Objective(metric=get_factorial_metric())
)
if has_optimization_config
else None,
runner=SyntheticRunner(),
is_test=True,
tracking_metrics=[get_factorial_metric("secondary_metric")],
)
if with_status_quo:
exp.status_quo = Arm(
parameters={
"factor1": "level11",
"factor2": "level21",
"factor3": "level31",
}
)
if with_batch:
factorial_generator = get_factorial(search_space=exp.search_space)
factorial_run = factorial_generator.gen(n=-1)
exp.new_batch_trial(optimize_for_power=with_status_quo).add_generator_run(
factorial_run
)
return exp
[docs]def get_experiment_with_repeated_arms(num_repeated_arms: int) -> Experiment:
batch_trial = get_batch_trial_with_repeated_arms(num_repeated_arms)
return batch_trial.experiment
[docs]def get_experiment_with_trial() -> Experiment:
trial = get_trial()
return trial.experiment
[docs]def get_experiment_with_batch_trial(constrain_search_space: bool = True) -> Experiment:
batch_trial = get_batch_trial(constrain_search_space=constrain_search_space)
return batch_trial.experiment
[docs]def get_experiment_with_batch_and_single_trial() -> Experiment:
batch_trial = get_batch_trial()
batch_trial.experiment.new_trial(generator_run=GeneratorRun(arms=[get_arm()]))
return batch_trial.experiment
[docs]def get_experiment_with_trial_with_ttl() -> Experiment:
batch_trial = get_batch_trial()
batch_trial.experiment.new_trial(
generator_run=GeneratorRun(arms=[get_arm()]), ttl_seconds=1
)
return batch_trial.experiment
[docs]def get_experiment_with_data() -> Experiment:
batch_trial = get_batch_trial()
batch_trial.experiment.attach_data(data=get_data())
batch_trial.experiment.attach_data(data=get_data())
batch_trial.experiment.attach_data(data=get_data())
return batch_trial.experiment
[docs]def get_experiment_with_map_data() -> Experiment:
experiment = get_experiment_with_map_data_type()
experiment.new_trial()
experiment.add_tracking_metric(MapMetric("ax_test_metric"))
experiment.attach_data(data=get_map_data())
return experiment
[docs]def get_experiment_with_multi_objective() -> Experiment:
optimization_config = get_multi_objective_optimization_config()
exp = Experiment(
name="test_experiment_multi_objective",
search_space=get_branin_search_space(),
optimization_config=optimization_config,
description="test experiment with multi objective",
runner=SyntheticRunner(),
tracking_metrics=[Metric(name="tracking")],
is_test=True,
)
return exp
[docs]def get_branin_experiment_with_multi_objective(
has_optimization_config: bool = True,
has_objective_thresholds: bool = False,
with_batch: bool = False,
with_status_quo: bool = False,
with_fidelity_parameter: bool = False,
num_objectives: int = 2,
) -> Experiment:
exp = Experiment(
name="branin_test_experiment",
search_space=get_branin_search_space(
with_fidelity_parameter=with_fidelity_parameter
),
optimization_config=get_branin_multi_objective_optimization_config(
has_objective_thresholds=has_objective_thresholds,
num_objectives=num_objectives,
)
if has_optimization_config
else None,
runner=SyntheticRunner(),
is_test=True,
)
if with_status_quo:
# Experiment chooses the name "status_quo" by default
exp.status_quo = Arm(parameters={"x1": 0.0, "x2": 0.0})
if with_batch:
sobol_generator = get_sobol(search_space=exp.search_space, seed=TEST_SOBOL_SEED)
sobol_run = sobol_generator.gen(n=5)
exp.new_batch_trial(optimize_for_power=with_status_quo).add_generator_run(
sobol_run
)
return exp
[docs]def get_branin_with_multi_task(with_multi_objective: bool = False) -> Experiment:
exp = Experiment(
name="branin_test_experiment",
search_space=get_branin_search_space(),
optimization_config=get_branin_multi_objective_optimization_config(
has_objective_thresholds=True,
)
if with_multi_objective
else get_branin_optimization_config(),
runner=SyntheticRunner(),
is_test=True,
)
exp.status_quo = Arm(parameters={"x1": 0.0, "x2": 0.0}, name="status_quo")
sobol_generator = get_sobol(search_space=exp.search_space, seed=TEST_SOBOL_SEED)
sobol_run = sobol_generator.gen(n=5)
exp.new_batch_trial(optimize_for_power=True).add_generator_run(sobol_run)
not_none(exp.trials.get(0)).run()
exp.new_batch_trial(optimize_for_power=True).add_generator_run(sobol_run)
not_none(exp.trials.get(1)).run()
return exp
[docs]def get_experiment_with_scalarized_objective_and_outcome_constraint() -> Experiment:
objective = get_scalarized_objective()
outcome_constraints = [
get_outcome_constraint(),
get_scalarized_outcome_constraint(),
]
optimization_config = OptimizationConfig(
objective=objective, outcome_constraints=outcome_constraints
)
return Experiment(
name="test_experiment_scalarized_objective and outcome constraint",
search_space=get_search_space(),
optimization_config=optimization_config,
status_quo=get_status_quo(),
description="test experiment with scalarized objective and outcome constraint",
tracking_metrics=[Metric(name="tracking")],
is_test=True,
)
[docs]def get_hierarchical_search_space_experiment(
num_observations: int = 0,
) -> Experiment:
experiment = Experiment(
name="test_experiment_hss",
description="test experiment with hierarchical search space",
search_space=get_hierarchical_search_space(),
optimization_config=get_optimization_config(),
)
sobol_generator = get_sobol(search_space=experiment.search_space)
for i in range(num_observations):
trial = experiment.new_trial(generator_run=sobol_generator.gen(1))
trial.mark_running(no_runner_required=True)
data = Data(
df=pd.DataFrame.from_records(
[
{
"arm_name": f"{i}_0",
"metric_name": f"m{j + 1}",
"mean": o,
"sem": None,
"trial_index": i,
}
for j, o in enumerate(torch.rand(2).tolist())
]
)
)
experiment.attach_data(data)
trial.mark_completed()
return experiment
[docs]def get_experiment_with_observations(
observations: List[List[float]],
minimize: bool = False,
scalarized: bool = False,
constrained: bool = False,
with_tracking_metrics: bool = False,
search_space: Optional[SearchSpace] = None,
) -> Experiment:
multi_objective = (len(observations[0]) - constrained) > 1
if multi_objective:
metrics = [
Metric(name="m1", lower_is_better=minimize),
Metric(name="m2", lower_is_better=False),
]
if scalarized:
optimization_config = OptimizationConfig(
objective=ScalarizedObjective(metrics)
)
if constrained:
raise NotImplementedError
else:
optimization_config = MultiObjectiveOptimizationConfig(
objective=MultiObjective(metrics=metrics),
objective_thresholds=[
ObjectiveThreshold(
metric=metrics[i],
bound=0.0,
relative=False,
op=ComparisonOp.LEQ
if metrics[i].lower_is_better
else ComparisonOp.GEQ,
)
for i in [0, 1]
],
outcome_constraints=[
OutcomeConstraint(
metric=Metric(name="m3"),
op=ComparisonOp.GEQ,
bound=0.0,
relative=False,
)
]
if constrained
else None,
)
else:
if scalarized:
raise NotImplementedError
objective = Objective(metric=Metric(name="m1"), minimize=minimize)
if constrained:
constraint = OutcomeConstraint(
metric=Metric(name="m2"),
op=ComparisonOp.GEQ,
bound=0.0,
relative=False,
)
optimization_config = OptimizationConfig(
objective=objective, outcome_constraints=[constraint]
)
else:
optimization_config = OptimizationConfig(objective=objective)
search_space = search_space or get_search_space_for_range_values(min=0.0, max=1.0)
exp = Experiment(
search_space=search_space,
optimization_config=optimization_config,
tracking_metrics=[
Metric(name=f"m{len(observations[0])}", lower_is_better=False)
]
if with_tracking_metrics
else None,
runner=SyntheticRunner(),
is_test=True,
)
sobol_generator = get_sobol(search_space=search_space)
for i, obs in enumerate(observations):
# Create a dummy trial to add the observation.
trial = exp.new_trial(generator_run=sobol_generator.gen(n=1))
data = Data(
df=pd.DataFrame.from_records(
[
{
"arm_name": f"{i}_0",
"metric_name": f"m{j + 1}",
"mean": o,
"sem": None,
"trial_index": i,
}
for j, o in enumerate(obs)
]
)
)
exp.attach_data(data)
trial.run().complete()
return exp
[docs]def get_high_dimensional_branin_experiment() -> Experiment:
search_space = SearchSpace(
# pyre-fixme[6]: In call `SearchSpace.__init__`, for 1st parameter `parameters`
# expected `List[Parameter]` but got `List[RangeParameter]`.
parameters=[
RangeParameter(
name=f"x{i}",
parameter_type=ParameterType.FLOAT,
lower=-5.0,
upper=10.0,
)
for i in range(25)
]
+ [
RangeParameter(
name=f"x{i + 25}",
parameter_type=ParameterType.FLOAT,
lower=0.0,
upper=15.0,
)
for i in range(25)
],
)
optimization_config = OptimizationConfig(
objective=Objective(
metric=BraninMetric(
name="objective",
param_names=["x19", "x44"],
),
minimize=True,
)
)
return Experiment(
name="high_dimensional_branin_experiment",
search_space=search_space,
optimization_config=optimization_config,
runner=SyntheticRunner(),
)
##############################
# Search Spaces
##############################
[docs]def get_search_space(constrain_search_space: bool = True) -> SearchSpace:
parameters: List[Parameter] = [
get_range_parameter(),
get_range_parameter2(),
get_choice_parameter(),
get_fixed_parameter(),
]
parameter_constraints = []
if constrain_search_space:
parameter_constraints = [
get_order_constraint(),
get_parameter_constraint(),
get_sum_constraint1(),
]
return SearchSpace(
parameters=parameters,
parameter_constraints=parameter_constraints,
)
[docs]def get_branin_search_space(
with_fidelity_parameter: bool = False,
with_choice_parameter: bool = False,
with_str_choice_param: bool = False,
) -> SearchSpace:
parameters = [
RangeParameter(
name="x1", parameter_type=ParameterType.FLOAT, lower=-5, upper=10
),
ChoiceParameter(
name="x2",
parameter_type=ParameterType.FLOAT,
values=[float(x) for x in range(0, 16)],
)
if with_choice_parameter
else RangeParameter(
name="x2", parameter_type=ParameterType.FLOAT, lower=0, upper=15
),
]
if with_str_choice_param:
parameters.append(
ChoiceParameter(
name="str_param",
parameter_type=ParameterType.STRING,
values=["foo", "bar", "baz"],
)
)
if with_fidelity_parameter:
parameters.append(
RangeParameter(
name="fidelity",
parameter_type=ParameterType.FLOAT,
lower=0.0,
upper=1.0,
is_fidelity=True,
target_value=1.0,
)
)
return SearchSpace(parameters=cast(List[Parameter], parameters))
[docs]def get_factorial_search_space() -> SearchSpace:
return SearchSpace(
parameters=[
ChoiceParameter(
name="factor1",
parameter_type=ParameterType.STRING,
values=["level11", "level12", "level13"],
),
ChoiceParameter(
name="factor2",
parameter_type=ParameterType.STRING,
values=["level21", "level22"],
),
ChoiceParameter(
name="factor3",
parameter_type=ParameterType.STRING,
values=["level31", "level32", "level33", "level34"],
),
]
)
[docs]def get_large_factorial_search_space(
num_levels: int = 10, num_parameters: int = 6
) -> SearchSpace:
return SearchSpace(
parameters=[
ChoiceParameter(
name=f"factor{j}",
parameter_type=ParameterType.STRING,
values=[f"level1{i}" for i in range(num_levels)],
)
for j in range(num_parameters)
]
)
[docs]def get_large_ordinal_search_space(
n_ordinal_choice_parameters: int,
n_continuous_range_parameters: int,
) -> SearchSpace:
return SearchSpace(
parameters=[ # pyre-ignore[6]
RangeParameter(
name=f"x{i}",
parameter_type=ParameterType.FLOAT,
lower=0.0,
upper=1.0,
)
for i in range(n_continuous_range_parameters)
]
+ [
ChoiceParameter(
name=f"y{i}",
parameter_type=ParameterType.INT,
values=[2, 4, 8, 16],
)
for i in range(n_ordinal_choice_parameters)
]
)
[docs]def get_hartmann_search_space(with_fidelity_parameter: bool = False) -> SearchSpace:
parameters = [
RangeParameter(
name=f"x{idx+1}", parameter_type=ParameterType.FLOAT, lower=0.0, upper=1.0
)
for idx in range(6)
]
if with_fidelity_parameter:
parameters.append(
RangeParameter(
name="fidelity",
parameter_type=ParameterType.FLOAT,
lower=0.0,
upper=1.0,
is_fidelity=True,
target_value=1.0,
)
)
return SearchSpace(parameters=cast(List[Parameter], parameters))
[docs]def get_search_space_for_value(val: float = 3.0) -> SearchSpace:
return SearchSpace([FixedParameter("x", ParameterType.FLOAT, val)])
[docs]def get_search_space_for_range_value(min: float = 3.0, max: float = 6.0) -> SearchSpace:
return SearchSpace([RangeParameter("x", ParameterType.FLOAT, min, max)])
[docs]def get_search_space_for_range_values(
min: float = 3.0, max: float = 6.0
) -> SearchSpace:
return SearchSpace(
[
RangeParameter("x", ParameterType.FLOAT, min, max),
RangeParameter("y", ParameterType.FLOAT, min, max),
]
)
[docs]def get_discrete_search_space() -> SearchSpace:
return SearchSpace(
[
RangeParameter("x", ParameterType.INT, 0, 3),
RangeParameter("y", ParameterType.INT, 5, 7),
ChoiceParameter("z", ParameterType.STRING, ["red", "panda", "bear"]),
]
)
[docs]def get_small_discrete_search_space() -> SearchSpace:
return SearchSpace(
[
RangeParameter("x", ParameterType.INT, 0, 1),
ChoiceParameter("y", ParameterType.STRING, ["red", "panda"]),
]
)
[docs]def get_search_space_with_choice_parameters(
num_ordered_parameters: int = 2,
num_unordered_choices: int = 5,
) -> SearchSpace:
parameters = []
for i in range(num_ordered_parameters):
parameters.append(
ChoiceParameter(
name=f"ordered_{i}",
parameter_type=ParameterType.INT,
values=list(range(10)), # pyre-ignore
is_ordered=True,
)
)
parameters.append(
ChoiceParameter(
name="unordered",
parameter_type=ParameterType.INT,
values=list(range(num_unordered_choices)), # pyre-ignore
is_ordered=False,
)
)
return SearchSpace(parameters=parameters)
[docs]def get_hierarchical_search_space(
with_fixed_parameter: bool = False,
) -> HierarchicalSearchSpace:
parameters: List[Parameter] = [
get_model_parameter(with_fixed_parameter=with_fixed_parameter),
get_lr_parameter(),
get_l2_reg_weight_parameter(),
get_num_boost_rounds_parameter(),
]
if with_fixed_parameter:
parameters.append(get_fixed_parameter())
return HierarchicalSearchSpace(parameters=parameters)
[docs]def get_robust_search_space(
lb: float = 0.0,
ub: float = 5.0,
multivariate: bool = False,
use_discrete: bool = False,
num_samples: int = 4, # dummy
) -> RobustSearchSpace:
parameters = [
RangeParameter("x", ParameterType.FLOAT, lb, ub),
RangeParameter("y", ParameterType.FLOAT, lb, ub),
RangeParameter("z", ParameterType.INT, lb, ub),
ChoiceParameter("c", ParameterType.STRING, ["red", "panda"]),
]
if multivariate:
if use_discrete:
raise UserInputError(
"`multivariate` and `use_discrete` are not supported together."
)
distributions = [
ParameterDistribution(
parameters=["x", "y"],
distribution_class="multivariate_normal",
distribution_parameters={
"mean": [0.1, 0.2],
"cov": [[0.5, 0.1], [0.1, 0.3]],
},
)
]
else:
distributions = []
distributions.append(
ParameterDistribution(
parameters=["x"],
distribution_class="norm",
distribution_parameters={"loc": 1.0, "scale": ub - lb},
)
)
if use_discrete:
distributions.append(
ParameterDistribution(
parameters=["z"],
distribution_class="binom",
distribution_parameters={"n": 20, "p": 0.5},
)
)
else:
distributions.append(
ParameterDistribution(
parameters=["y"],
distribution_class="expon",
distribution_parameters={},
)
)
return RobustSearchSpace(
# pyre-ignore Incompatible parameter type [6]
parameters=parameters,
parameter_distributions=distributions,
num_samples=num_samples,
)
[docs]def get_robust_search_space_environmental(
lb: float = 0.0,
ub: float = 5.0,
) -> RobustSearchSpace:
parameters = [
RangeParameter("x", ParameterType.FLOAT, lb, ub),
RangeParameter("y", ParameterType.FLOAT, lb, ub),
]
environmental_variables = [
RangeParameter("z", ParameterType.INT, lb, ub),
]
distributions = [
ParameterDistribution(
parameters=["z"],
distribution_class="binom",
distribution_parameters={"n": 5, "p": 0.5},
)
]
return RobustSearchSpace(
# pyre-ignore Incompatible parameter type [6]
parameters=parameters,
parameter_distributions=distributions,
num_samples=4,
# pyre-ignore Incompatible parameter type [6]
environmental_variables=environmental_variables,
)
##############################
# Trials
##############################
[docs]def get_batch_trial(
abandon_arm: bool = True,
experiment: Optional[Experiment] = None,
constrain_search_space: bool = True,
) -> BatchTrial:
experiment = experiment or get_experiment(
constrain_search_space=constrain_search_space
)
batch = experiment.new_batch_trial()
arms = get_arms_from_dict(get_arm_weights1())
weights = get_weights_from_dict(get_arm_weights1())
batch.add_arms_and_weights(arms=arms, weights=weights, multiplier=0.75)
if abandon_arm:
batch.mark_arm_abandoned(batch.arms[0].name, "abandoned reason")
batch.runner = SyntheticRunner()
batch.set_status_quo_with_weight(status_quo=arms[0], weight=0.5)
batch._generation_step_index = 0
return batch
[docs]def get_batch_trial_with_repeated_arms(num_repeated_arms: int) -> BatchTrial:
"""Create a batch that contains both new arms and N arms from the last
existed trial in the experiment. Where N is equal to the input argument
'num_repeated_arms'.
"""
experiment = get_experiment_with_batch_trial()
if len(experiment.trials) > 0:
# Get last (previous) trial.
prev_trial = experiment.trials[len(experiment.trials) - 1]
# Take the first N arms, where N is num_repeated_arms.
if len(prev_trial.arms) < num_repeated_arms:
logger.warning(
"There are less arms in the previous trial than the value of "
"input parameter 'num_repeated_arms'. Thus all the arms from "
"the last trial will be repeated in the new trial."
)
prev_arms = prev_trial.arms[:num_repeated_arms]
if isinstance(prev_trial, BatchTrial):
prev_weights = prev_trial.weights[:num_repeated_arms]
else:
prev_weights = [1] * len(prev_arms)
else:
raise Exception(
"There are no previous trials in this experiment. Thus the new "
"batch was not created as no repeated arms could be added."
)
# Create new (next) arms.
next_arms = get_arms_from_dict(get_arm_weights2())
next_weights = get_weights_from_dict(get_arm_weights2())
# Add num_repeated_arms to the new trial.
arms = prev_arms + next_arms
weights = prev_weights + next_weights
batch = experiment.new_batch_trial()
batch.add_arms_and_weights(arms=arms, weights=weights, multiplier=1)
batch.runner = SyntheticRunner()
batch.set_status_quo_with_weight(status_quo=arms[0], weight=0.5)
return batch
[docs]def get_trial() -> Trial:
experiment = get_experiment()
trial = experiment.new_trial(ttl_seconds=72)
arm = get_arms_from_dict(get_arm_weights1())[0]
trial.add_arm(arm)
trial.runner = SyntheticRunner()
trial._generation_step_index = 0
trial.update_run_metadata({"workflow_run_id": [12345]})
return trial
[docs]def get_hss_trials_with_fixed_parameter(exp: Experiment) -> Dict[int, BaseTrial]:
return {
0: Trial(experiment=exp).add_arm(
arm=Arm(
parameters={
"model": "Linear",
"learning_rate": 0.05,
"l2_reg_weight": 1e-4,
"num_boost_rounds": 15,
"z": True,
},
name="0_0",
)
),
1: Trial(experiment=exp).add_arm(
arm=Arm(
parameters={
"model": "XGBoost",
"learning_rate": 0.05,
"l2_reg_weight": 1e-4,
"num_boost_rounds": 15,
"z": True,
},
name="1_0",
)
),
}
[docs]class TestTrial(BaseTrial):
"Trial class to test unsupported trial type error"
_arms: List[Arm] = []
def __repr__(self) -> str:
return "test"
def _get_candidate_metadata(self, arm_name: str) -> Optional[Dict[str, Any]]:
return None
def _get_candidate_metadata_from_all_generator_runs(
self,
) -> Dict[str, Optional[Dict[str, Any]]]:
return {"test": None}
[docs] def abandoned_arms(self) -> str:
return "test"
@property
def arms(self) -> List[Arm]:
return self._arms
@arms.setter
def arms(self, val: List[Arm]) -> None:
self._arms = val
[docs] def arms_by_name(self) -> str:
return "test"
[docs] def generator_runs(self) -> str:
return "test"
##############################
# Parameters
##############################
[docs]def get_range_parameter() -> RangeParameter:
return RangeParameter(
name="w",
parameter_type=ParameterType.FLOAT,
lower=0.5,
upper=5.5,
log_scale=False,
digits=5,
)
[docs]def get_range_parameter2() -> RangeParameter:
return RangeParameter(name="x", parameter_type=ParameterType.INT, lower=1, upper=10)
[docs]def get_choice_parameter() -> ChoiceParameter:
return ChoiceParameter(
name="y",
parameter_type=ParameterType.STRING,
# Expected `List[typing.Optional[typing.Union[bool, float, str]]]` for 4th
# parameter `values` to call
# `ax.core.parameter.ChoiceParameter.__init__` but got `List[str]`.
values=["foo", "bar", "baz"],
)
[docs]def get_ordered_choice_parameter() -> ChoiceParameter:
return ChoiceParameter(
name="y",
parameter_type=ParameterType.INT,
# Expected `List[typing.Optional[typing.Union[bool, float, str]]]` for 4th
# parameter `values` to call
# `ax.core.parameter.ChoiceParameter.__init__` but got `List[str]`.
values=[1, 2, 3],
is_ordered=True,
)
[docs]def get_task_choice_parameter() -> ChoiceParameter:
return ChoiceParameter(
name="y",
parameter_type=ParameterType.INT,
values=[1, 2, 3],
is_task=True,
target_value=1,
)
[docs]def get_fixed_parameter() -> FixedParameter:
return FixedParameter(name="z", parameter_type=ParameterType.BOOL, value=True)
[docs]def get_model_parameter(with_fixed_parameter: bool = False) -> ChoiceParameter:
return ChoiceParameter(
name="model",
parameter_type=ParameterType.STRING,
values=["Linear", "XGBoost"],
dependents={
"Linear": ["learning_rate", "l2_reg_weight"],
"XGBoost": (
["num_boost_rounds", "z"]
if with_fixed_parameter
else ["num_boost_rounds"]
),
},
)
[docs]def get_lr_parameter() -> RangeParameter:
return RangeParameter(
name="learning_rate",
parameter_type=ParameterType.FLOAT,
lower=0.001,
upper=0.1,
)
[docs]def get_l2_reg_weight_parameter() -> RangeParameter:
return RangeParameter(
name="l2_reg_weight",
parameter_type=ParameterType.FLOAT,
lower=0.00001,
upper=0.001,
)
[docs]def get_num_boost_rounds_parameter() -> RangeParameter:
return RangeParameter(
name="num_boost_rounds",
parameter_type=ParameterType.INT,
lower=10,
upper=20,
)
##############################
# Parameter Constraints
##############################
[docs]def get_order_constraint() -> OrderConstraint:
w = get_range_parameter()
x = get_range_parameter2()
return OrderConstraint(lower_parameter=x, upper_parameter=w)
[docs]def get_parameter_constraint(
param_x: str = "x", param_y: str = "w"
) -> ParameterConstraint:
return ParameterConstraint(constraint_dict={param_x: 1.0, param_y: -1.0}, bound=1.0)
[docs]def get_sum_constraint1() -> SumConstraint:
w = get_range_parameter()
x = get_range_parameter2()
return SumConstraint(parameters=[x, w], is_upper_bound=False, bound=10.0)
[docs]def get_sum_constraint2() -> SumConstraint:
w = get_range_parameter()
x = get_range_parameter2()
return SumConstraint(parameters=[x, w], is_upper_bound=True, bound=10.0)
##############################
# Metrics
##############################
[docs]def get_metric() -> Metric:
return Metric(name="m1", properties={"prop": "val"})
[docs]def get_branin_metric(
name: str = "branin", lower_is_better: bool = True
) -> BraninMetric:
param_names = ["x1", "x2"]
return BraninMetric(
name=name,
param_names=param_names,
noise_sd=0.01,
lower_is_better=lower_is_better,
)
[docs]def get_augmented_branin_metric(name: str = "aug_branin") -> AugmentedBraninMetric:
param_names = ["x1", "x2", "fidelity"]
return AugmentedBraninMetric(name=name, param_names=param_names, noise_sd=0.01)
[docs]def get_hartmann_metric(name: str = "hartmann") -> Hartmann6Metric:
param_names = [f"x{idx + 1}" for idx in range(6)]
return Hartmann6Metric(name=name, param_names=param_names, noise_sd=0.01)
[docs]def get_augmented_hartmann_metric(
name: str = "aug_hartmann",
) -> AugmentedHartmann6Metric:
param_names = [f"x{idx + 1}" for idx in range(6)]
param_names.append("fidelity")
return AugmentedHartmann6Metric(name=name, param_names=param_names, noise_sd=0.01)
[docs]def get_factorial_metric(name: str = "success_metric") -> FactorialMetric:
coefficients = {
"factor1": {"level11": 0.1, "level12": 0.2, "level13": 0.3},
"factor2": {"level21": 0.1, "level22": 0.2},
"factor3": {"level31": 0.1, "level32": 0.2, "level33": 0.3, "level34": 0.4},
}
return FactorialMetric(
name=name,
# Expected `Dict[str, Dict[typing.Optional[typing.Union[bool, float, str]],
# float]]` for 3rd parameter `coefficients` to call
# `ax.metrics.factorial.FactorialMetric.__init__` but got `Dict[str,
# Dict[str, float]]`.
# pyre-fixme[6]:
coefficients=coefficients,
batch_size=int(1e4),
)
[docs]def get_dict_lookup_metric() -> DictLookupMetric:
return DictLookupMetric(
name="test metric",
param_names=["p1", "p2"],
lookup_dict={
(0, 0): 0,
(0, 1): 1,
},
)
##############################
# Outcome Constraints
##############################
[docs]def get_objective_threshold(
metric_name: str = "m1",
bound: float = -0.25,
comparison_op: ComparisonOp = ComparisonOp.GEQ,
) -> ObjectiveThreshold:
return ObjectiveThreshold(
metric=Metric(name=metric_name), bound=bound, op=comparison_op
)
[docs]def get_outcome_constraint() -> OutcomeConstraint:
return OutcomeConstraint(metric=Metric(name="m2"), op=ComparisonOp.GEQ, bound=-0.25)
[docs]def get_scalarized_outcome_constraint() -> ScalarizedOutcomeConstraint:
return ScalarizedOutcomeConstraint(
metrics=[Metric(name="oc_m3"), Metric(name="oc_m4")],
weights=[0.2, 0.8],
op=ComparisonOp.GEQ,
bound=-0.25,
)
[docs]def get_branin_outcome_constraint() -> OutcomeConstraint:
return OutcomeConstraint(metric=get_branin_metric(), op=ComparisonOp.LEQ, bound=0)
##############################
# Objectives
##############################
[docs]def get_objective() -> Objective:
return Objective(metric=Metric(name="m1"), minimize=False)
[docs]def get_map_objective() -> Objective:
return Objective(metric=MapMetric(name="m1"), minimize=False)
[docs]def get_multi_objective() -> Objective:
return MultiObjective(
objectives=[
Objective(metric=Metric(name="m1")),
Objective(metric=Metric(name="m3", lower_is_better=True), minimize=True),
],
)
[docs]def get_custom_multi_objective() -> Objective:
return MultiObjective(
objectives=[
Objective(metric=CustomTestMetric(name="m1", test_attribute="test")),
Objective(
metric=CustomTestMetric(
name="m3", lower_is_better=True, test_attribute="test"
),
minimize=True,
),
],
)
[docs]def get_many_branin_objective_opt_config(
n_objectives: int,
) -> MultiObjectiveOptimizationConfig:
return MultiObjectiveOptimizationConfig(
objective=MultiObjective(
objectives=[get_branin_objective(name=f"m{i}") for i in range(n_objectives)]
)
)
[docs]def get_scalarized_objective() -> Objective:
return ScalarizedObjective(
metrics=[Metric(name="m1"), Metric(name="m3")],
weights=[1.0, 2.0],
minimize=False,
)
[docs]def get_branin_objective(name: str = "branin", minimize: bool = False) -> Objective:
return Objective(metric=get_branin_metric(name=name), minimize=minimize)
[docs]def get_branin_multi_objective(num_objectives: int = 2) -> Objective:
_validate_num_objectives(num_objectives=num_objectives)
objectives = [
Objective(metric=get_branin_metric(name="branin_a"), minimize=True),
Objective(metric=get_branin_metric(name="branin_b"), minimize=True),
]
if num_objectives == 3:
objectives.append(
Objective(metric=get_branin_metric(name="branin_c"), minimize=True)
)
return MultiObjective(objectives=objectives)
[docs]def get_augmented_branin_objective() -> Objective:
return Objective(metric=get_augmented_branin_metric(), minimize=False)
[docs]def get_hartmann_objective() -> Objective:
return Objective(metric=get_hartmann_metric(), minimize=False)
[docs]def get_augmented_hartmann_objective() -> Objective:
return Objective(metric=get_augmented_hartmann_metric(), minimize=False)
##############################
# Optimization Configs
##############################
[docs]def get_optimization_config() -> OptimizationConfig:
objective = get_objective()
outcome_constraints = [get_outcome_constraint()]
return OptimizationConfig(
objective=objective, outcome_constraints=outcome_constraints
)
[docs]def get_map_optimization_config() -> OptimizationConfig:
objective = get_map_objective()
return OptimizationConfig(objective=objective)
[docs]def get_multi_objective_optimization_config(
custom_metric: bool = False,
) -> MultiObjectiveOptimizationConfig:
objective = get_custom_multi_objective() if custom_metric else get_multi_objective()
outcome_constraints = [get_outcome_constraint()]
objective_thresholds = [
get_objective_threshold(metric_name="m1"),
get_objective_threshold(metric_name="m3", comparison_op=ComparisonOp.LEQ),
]
return MultiObjectiveOptimizationConfig(
objective=objective,
outcome_constraints=outcome_constraints,
objective_thresholds=objective_thresholds,
)
[docs]def get_optimization_config_no_constraints() -> OptimizationConfig:
return OptimizationConfig(objective=Objective(metric=Metric("test_metric")))
[docs]def get_branin_optimization_config(minimize: bool = False) -> OptimizationConfig:
return OptimizationConfig(objective=get_branin_objective(minimize=minimize))
def _validate_num_objectives(num_objectives: int) -> None:
if num_objectives not in (2, 3):
raise NotImplementedError("Only 2 and 3 objectives are supported.")
[docs]def get_branin_multi_objective_optimization_config(
has_objective_thresholds: bool = False,
num_objectives: int = 2,
) -> MultiObjectiveOptimizationConfig:
_validate_num_objectives(num_objectives=num_objectives)
# minimum Branin value is 0.397887
if has_objective_thresholds:
objective_thresholds = [
ObjectiveThreshold(
metric=get_branin_metric(name="branin_a"),
bound=10,
op=ComparisonOp.LEQ,
relative=False,
),
ObjectiveThreshold(
metric=get_branin_metric(name="branin_b"),
bound=20,
op=ComparisonOp.LEQ,
relative=False,
),
]
if num_objectives == 3:
objective_thresholds.append(
ObjectiveThreshold(
metric=get_branin_metric(name="branin_c"),
bound=5.0,
op=ComparisonOp.LEQ,
relative=False,
)
)
else:
objective_thresholds = None
return MultiObjectiveOptimizationConfig(
objective=get_branin_multi_objective(num_objectives=num_objectives),
objective_thresholds=objective_thresholds,
)
[docs]def get_augmented_branin_optimization_config() -> OptimizationConfig:
return OptimizationConfig(objective=get_augmented_branin_objective())
[docs]def get_hartmann_optimization_config() -> OptimizationConfig:
return OptimizationConfig(objective=get_hartmann_objective())
[docs]def get_augmented_hartmann_optimization_config() -> OptimizationConfig:
return OptimizationConfig(objective=get_augmented_hartmann_objective())
##############################
# Arms
##############################
[docs]def get_arm() -> Arm:
# Expected `Dict[str, typing.Optional[typing.Union[bool, float, str]]]` for 2nd
# parameter `parameters` to call `ax.core.arm.Arm.__init__` but got
# `Dict[str, typing.Union[float, str]]`.
return Arm(parameters={"w": 0.75, "x": 1, "y": "foo", "z": True})
[docs]def get_status_quo() -> Arm:
return Arm(
# Expected `Dict[str, typing.Optional[typing.Union[bool, float, str]]]` for 2nd
# parameter `parameters` to call `ax.core.arm.Arm.__init__`
# but got `Dict[str, typing.Union[float, str]]`.
parameters={"w": 0.2, "x": 1, "y": "bar", "z": False},
name="status_quo",
)
[docs]def get_arm_weights1() -> MutableMapping[Arm, float]:
parameters_dicts: List[TParameterization] = [
{"w": 0.85, "x": 1, "y": "baz", "z": False},
{"w": 0.75, "x": 1, "y": "foo", "z": True},
{"w": 1.4, "x": 2, "y": "bar", "z": True},
]
arms = [Arm(param_dict) for param_dict in parameters_dicts]
weights = [0.25, 0.5, 0.25]
return OrderedDict(zip(arms, weights))
[docs]def get_arm_weights2() -> MutableMapping[Arm, float]: # update
parameters_dicts: List[TParameterization] = [
{"w": 0.96, "x": 3, "y": "hello", "z": True},
{"w": 0.16, "x": 4, "y": "dear", "z": True},
{"w": 3.1, "x": 5, "y": "world", "z": False},
]
arms = [Arm(param_dict) for param_dict in parameters_dicts]
weights = [0.25, 0.5, 0.25]
return OrderedDict(zip(arms, weights))
[docs]def get_arms_from_dict(arm_weights_dict: MutableMapping[Arm, float]) -> List[Arm]:
return list(arm_weights_dict.keys())
[docs]def get_weights_from_dict(arm_weights_dict: MutableMapping[Arm, float]) -> List[float]:
return list(arm_weights_dict.values())
[docs]def get_arms() -> List[Arm]:
return list(get_arm_weights1().keys())
[docs]def get_weights() -> List[float]:
return list(get_arm_weights1().values())
[docs]def get_branin_arms(n: int, seed: int) -> List[Arm]:
# TODO replace with sobol
np.random.seed(seed)
x1_raw = np.random.rand(n)
x2_raw = np.random.rand(n)
return [
Arm(parameters={"x1": -5 + x1_raw[i] * 15, "x2": x2_raw[i] * 15})
for i in range(n)
]
[docs]def get_abandoned_arm() -> AbandonedArm:
return AbandonedArm(name="0_0", reason="foobar", time=datetime.now())
##############################
# Generator Runs
##############################
[docs]def get_generator_run() -> GeneratorRun:
arms = get_arms_from_dict(get_arm_weights1())
weights = get_weights_from_dict(get_arm_weights1())
optimization_config = get_optimization_config()
search_space = get_search_space()
arm_predictions = get_model_predictions_per_arm()
return GeneratorRun(
arms=arms,
weights=weights,
optimization_config=optimization_config,
search_space=search_space,
model_predictions=get_model_predictions(),
best_arm_predictions=(arms[0], arm_predictions[arms[0].signature]),
fit_time=10.0,
gen_time=5.0,
model_key="Sobol",
model_kwargs={"scramble": False, "torch_device": torch.device("cpu")},
bridge_kwargs={"transforms": Cont_X_trans, "torch_dtype": torch.double},
generation_step_index=0,
candidate_metadata_by_arm_signature={
a.signature: {"md_key": f"md_val_{a.signature}"} for a in arms
},
)
[docs]def get_generator_run2() -> GeneratorRun:
arms = get_arms_from_dict(get_arm_weights1())
weights = get_weights_from_dict(get_arm_weights1())
return GeneratorRun(arms=arms, weights=weights)
##############################
# Runners
##############################
[docs]def get_synthetic_runner() -> SyntheticRunner:
return SyntheticRunner(dummy_metadata="foobar")
##############################
# Data
##############################
[docs]def get_data(
metric_name: str = "ax_test_metric",
trial_index: int = 0,
num_non_sq_arms: int = 4,
include_sq: bool = True,
) -> Data:
assert num_non_sq_arms < 5, "Only up to 4 arms currently handled."
arm_names = ["status_quo"] if include_sq else []
arm_names += [f"{trial_index}_{i}" for i in range(num_non_sq_arms)]
num_arms = num_non_sq_arms + 1 if include_sq else num_non_sq_arms
df_dict = {
"trial_index": trial_index,
"metric_name": metric_name,
"arm_name": arm_names,
"mean": [1, 3, 2, 2.25, 1.75][:num_arms],
"sem": [0, 0.5, 0.25, 0.40, 0.15][:num_arms],
"n": [100, 100, 100, 100, 100][:num_arms],
}
return Data(df=pd.DataFrame.from_records(df_dict))
[docs]def get_non_monolithic_branin_moo_data() -> Data:
now = datetime.now()
return Data(
df=pd.DataFrame.from_records(
[
{
"arm_name": "status_quo",
"trial_index": "0",
"metric_name": "branin_a", # Obj. metric for experiment.
"mean": 2.0,
"sem": 0.01,
"start_time": now - timedelta(days=3),
"end_time": now,
},
{
"arm_name": "0_0",
"trial_index": "0",
"metric_name": "branin_a", # Obj. metric for experiment.
"mean": 1.0,
"sem": 0.01,
"start_time": now - timedelta(days=3),
"end_time": now,
},
{
"arm_name": "status_quo",
"trial_index": "0",
"metric_name": "branin_b", # Obj. metric for experiment.
"mean": 2.0,
"sem": 0.01,
"start_time": now - timedelta(days=2),
"end_time": now - timedelta(days=1),
},
{
"arm_name": "0_0",
"trial_index": "0",
"metric_name": "branin_b", # Obj. metric for experiment.
"mean": 1.0,
"sem": 0.01,
"start_time": now - timedelta(days=2),
"end_time": now - timedelta(days=1),
},
]
)
)
[docs]def get_map_data(trial_index: int = 0) -> MapData:
evaluations = {
"status_quo": [
({"epoch": 1}, {"ax_test_metric": (1.0, 0.5)}),
({"epoch": 2}, {"ax_test_metric": (2.0, 0.5)}),
({"epoch": 3}, {"ax_test_metric": (3.0, 0.5)}),
({"epoch": 4}, {"ax_test_metric": (4.0, 0.5)}),
],
"0_0": [
({"epoch": 1}, {"ax_test_metric": (3.7, 0.5)}),
({"epoch": 2}, {"ax_test_metric": (3.8, 0.5)}),
({"epoch": 3}, {"ax_test_metric": (3.9, 0.5)}),
({"epoch": 4}, {"ax_test_metric": (4.0, 0.5)}),
],
"0_1": [
({"epoch": 1}, {"ax_test_metric": (3.0, 0.5)}),
({"epoch": 2}, {"ax_test_metric": (5.0, 0.5)}),
({"epoch": 3}, {"ax_test_metric": (6.0, 0.5)}),
({"epoch": 4}, {"ax_test_metric": (1.0, 0.5)}),
],
}
return MapData.from_map_evaluations(
evaluations=evaluations, # pyre-ignore [6]: Spurious param type mismatch.
trial_index=trial_index,
map_key_infos=[get_map_key_info()],
)
# pyre-fixme[24]: Generic type `MapKeyInfo` expects 1 type parameter.
[docs]def get_map_key_info() -> MapKeyInfo:
return MapKeyInfo(key="epoch", default_value=0.0)
[docs]def get_branin_data(
trial_indices: Optional[Iterable[int]] = None,
trials: Optional[Iterable[Trial]] = None,
) -> Data:
if trial_indices and trials:
raise ValueError("Expected `trial_indices` or `trials`, not both.")
if trials:
df_dicts = [
{
"trial_index": trial.index,
"metric_name": "branin",
"arm_name": not_none(checked_cast(Trial, trial).arm).name,
"mean": branin(
float(not_none(trial.arm).parameters["x1"]), # pyre-ignore[6]
float(not_none(trial.arm).parameters["x2"]), # pyre-ignore[6]
),
"sem": 0.0,
}
for trial in trials
]
else:
df_dicts = [
{
"trial_index": trial_index,
"metric_name": "branin",
"arm_name": f"{trial_index}_0",
"mean": 5.0,
"sem": 0.0,
}
for trial_index in (trial_indices or [0])
]
return Data(df=pd.DataFrame.from_records(df_dicts))
[docs]def get_branin_data_batch(batch: BatchTrial) -> Data:
return Data(
pd.DataFrame(
{
"trial_index": batch.index,
"arm_name": [arm.name for arm in batch.arms],
"metric_name": "branin",
"mean": [
# pyre-ignore[6]: This function can fail if a parameter value
# does not support conversion to float.
branin(float(arm.parameters["x1"]), float(arm.parameters["x2"]))
for arm in batch.arms
],
"sem": 0.1,
}
)
)
[docs]def get_branin_data_multi_objective(
trial_indices: Optional[Iterable[int]] = None, num_objectives: int = 2
) -> Data:
_validate_num_objectives(num_objectives=num_objectives)
suffixes = ["a", "b"]
if num_objectives == 3:
suffixes.append("c")
df_dicts = [
{
"trial_index": trial_index,
"metric_name": f"branin_{suffix}",
"arm_name": f"{trial_index}_0",
"mean": 5.0,
"sem": 0.0,
}
for trial_index in (trial_indices or [0])
for suffix in suffixes
]
return Data(df=pd.DataFrame.from_records(df_dicts))
[docs]def get_percentile_early_stopping_strategy() -> PercentileEarlyStoppingStrategy:
return PercentileEarlyStoppingStrategy(
percentile_threshold=0.25,
min_progression=0.2,
min_curves=10,
trial_indices_to_ignore=[0, 1, 2],
normalize_progressions=True,
)
[docs]def get_percentile_early_stopping_strategy_with_true_objective_metric_name() -> PercentileEarlyStoppingStrategy: # noqa
strategy = get_percentile_early_stopping_strategy()
strategy.true_objective_metric_name = "true_objective"
return strategy
[docs]def get_percentile_early_stopping_strategy_with_non_objective_metric_name() -> PercentileEarlyStoppingStrategy: # noqa
return PercentileEarlyStoppingStrategy(
metric_names=["foo"],
percentile_threshold=0.25,
min_progression=0.2,
min_curves=10,
trial_indices_to_ignore=[0, 1, 2],
normalize_progressions=True,
)
[docs]def get_threshold_early_stopping_strategy() -> ThresholdEarlyStoppingStrategy:
return ThresholdEarlyStoppingStrategy(
true_objective_metric_name="true_objective",
metric_threshold=0.1,
min_progression=0.2,
trial_indices_to_ignore=[0, 1, 2],
normalize_progressions=True,
)
[docs]def get_and_early_stopping_strategy() -> AndEarlyStoppingStrategy:
return AndEarlyStoppingStrategy(
left=get_percentile_early_stopping_strategy(),
right=get_threshold_early_stopping_strategy(),
)
[docs]def get_or_early_stopping_strategy() -> OrEarlyStoppingStrategy:
return OrEarlyStoppingStrategy(
left=get_percentile_early_stopping_strategy(),
right=get_threshold_early_stopping_strategy(),
)
[docs]class DummyEarlyStoppingStrategy(BaseEarlyStoppingStrategy):
def __init__(
self, early_stop_trials: Optional[Dict[int, Optional[str]]] = None
) -> None:
self.early_stop_trials: Dict[int, Optional[str]] = early_stop_trials or {}
self.seconds_between_polls = 1
[docs] def should_stop_trials_early(
self,
trial_indices: Set[int],
experiment: Experiment,
**kwargs: Dict[str, Any],
) -> Dict[int, Optional[str]]:
return self.early_stop_trials
[docs]def get_improvement_global_stopping_strategy() -> ImprovementGlobalStoppingStrategy:
return ImprovementGlobalStoppingStrategy(
min_trials=30,
window_size=10,
improvement_bar=0.05,
inactive_when_pending_trials=True,
)
[docs]class DummyGlobalStoppingStrategy(BaseGlobalStoppingStrategy):
"""
A dummy Global Stopping Strategy which stops the optimization after
a pre-specified number of trials are completed.
"""
def __init__(self, min_trials: int, trial_to_stop: int) -> None:
super().__init__(min_trials=min_trials)
self.trial_to_stop = trial_to_stop
def _should_stop_optimization(
self, experiment: Experiment, **kwargs: Dict[str, Any]
) -> Tuple[bool, str]:
num_completed_trials = len(experiment.trials_by_status[TrialStatus.COMPLETED])
if num_completed_trials >= max([self.min_trials, self.trial_to_stop]):
return True, "Stop the optimization."
else:
return False, ""
##############################
# Instances of types from core/types.py
##############################
[docs]def get_model_mean() -> TModelMean:
mean: TModelMean = {"test_metric_1": [1, 2, 3], "test_metric_2": [3, 4, 5]}
return mean
[docs]def get_model_covariance() -> TModelCov:
covariance: TModelCov = {
"test_metric_1": {"test_metric_1": [5, 6, 7], "test_metric_2": [7, 8, 9]},
"test_metric_2": {"test_metric_1": [9, 10, 11], "test_metric_2": [11, 12, 13]},
}
return covariance
[docs]def get_model_predictions() -> TModelPredict:
model_predictions: TModelPredict = (get_model_mean(), get_model_covariance())
return model_predictions
[docs]def get_model_predictions_per_arm() -> Dict[str, TModelPredictArm]:
arms = list(get_arm_weights1().keys())
means = get_model_mean()
covariances = get_model_covariance()
metric_names = list(means.keys())
m_1, m_2 = metric_names[0], metric_names[1]
return {
arms[i].signature: (
{m_1: means[m_1][i], m_2: means[m_2][i]},
{
m_1: {m_1: covariances[m_1][m_1][i], m_2: covariances[m_1][m_2][i]},
m_2: {m_1: covariances[m_2][m_1][i], m_2: covariances[m_2][m_2][i]},
},
)
for i in range(len(arms))
}
##############################
# Modular BoTorch Model Components
##############################
[docs]def get_botorch_model() -> BoTorchModel:
return BoTorchModel(
surrogate=get_surrogate(), acquisition_class=get_acquisition_type()
)
[docs]def get_botorch_model_with_default_acquisition_class() -> BoTorchModel:
return BoTorchModel(
surrogate=get_surrogate(),
acquisition_class=Acquisition,
botorch_acqf_class=get_acquisition_function_type(),
)
[docs]def get_botorch_model_with_surrogate_specs() -> BoTorchModel:
return BoTorchModel(
surrogate_specs={
"name": SurrogateSpec(botorch_model_kwargs={"some_option": "some_value"})
}
)
[docs]def get_surrogate() -> Surrogate:
return Surrogate(
botorch_model_class=get_model_type(),
mll_class=get_mll_type(),
)
[docs]def get_acquisition_type() -> Type[Acquisition]:
return Acquisition
[docs]def get_model_type() -> Type[Model]:
return SingleTaskGP
[docs]def get_mll_type() -> Type[MarginalLogLikelihood]:
return ExactMarginalLogLikelihood
[docs]def get_acquisition_function_type() -> Type[AcquisitionFunction]:
return qExpectedImprovement
[docs]def get_sebo_acquisition_class() -> Type[SEBOAcquisition]:
return SEBOAcquisition
[docs]def get_winsorization_config() -> WinsorizationConfig:
return WinsorizationConfig(
lower_quantile_margin=0.2,
upper_quantile_margin=0.3,
lower_boundary=20,
upper_boundary=50,
)
[docs]def get_gamma_prior() -> GammaPrior:
return GammaPrior(concentration=0.9, rate=10.0)
[docs]def get_interval() -> Interval:
return Interval(lower_bound=1e-6, upper_bound=0.1)
##############################
# Scheduler
##############################
[docs]def get_default_scheduler_options() -> SchedulerOptions:
return SchedulerOptions()
[docs]def get_scheduler_options_batch_trial() -> SchedulerOptions:
return SchedulerOptions(trial_type=TrialType.BATCH_TRIAL)
##############################
# Other
##############################
[docs]def get_risk_measure() -> RiskMeasure:
return RiskMeasure(risk_measure="Expectation", options={"n_w": 8})
[docs]def get_parameter_distribution() -> ParameterDistribution:
return ParameterDistribution(
parameters=["x"],
distribution_class="norm",
distribution_parameters={"loc": 1.0, "scale": 0.5},
)
[docs]def get_pathlib_path() -> Path:
return Path("some/meaningless/path")
[docs]def get_dataset(
num_samples: int = 2,
d: int = 2,
m: int = 2,
has_observation_noise: bool = False,
feature_names: Optional[List[str]] = None,
outcome_names: Optional[List[str]] = None,
tkwargs: Optional[Dict[str, Any]] = None,
seed: Optional[int] = None,
) -> SupervisedDataset:
"""Constructs a SupervisedDataset based on the given arguments.
Args:
num_samples: The number of samples in the dataset.
d: The dimension of the features.
m: The number of outcomes.
has_observation_noise: If True, includes Yvar in the dataset.
feature_names: A list of feature names. Defaults to x0, x1...
outcome_names: A list of outcome names. Defaults to y0, y1...
tkwargs: Optional dictionary of tensor kwargs, such as dtype and device.
seed: An optional seed used to generate the data.
"""
if seed is not None:
torch.manual_seed(seed)
feature_names = feature_names or [f"x{i}" for i in range(d)]
outcome_names = outcome_names or [f"y{i}" for i in range(m)]
tkwargs = tkwargs or {}
return SupervisedDataset(
X=torch.rand(num_samples, d, **tkwargs),
Y=torch.rand(num_samples, m, **tkwargs),
Yvar=torch.rand(num_samples, m, **tkwargs) * 0.01
if has_observation_noise
else None,
feature_names=feature_names,
outcome_names=outcome_names,
)
##############################
# Custom runner and metric
##############################
[docs]class CustomTestRunner(Runner):
def __init__(self, test_attribute: str) -> None:
self.test_attribute = test_attribute
[docs] def run(self, trial: BaseTrial) -> Dict[str, Any]:
return {"foo": "bar"}
[docs]class CustomTestMetric(Metric):
def __init__(
self,
name: str,
test_attribute: str,
lower_is_better: Optional[bool] = None,
) -> None:
self.test_attribute = test_attribute
super().__init__(name=name, lower_is_better=lower_is_better)
[docs]class SpecialGenerationStrategy(GenerationStrategyInterface):
"""A subclass of `GenerationStrategyInterface` to be used
for testing how methods respond to subtypes other than
`GenerationStrategy`."""
def __init__(self) -> None:
self._name = "special"
self._generator_runs: List[GeneratorRun] = []
[docs] def gen_for_multiple_trials_with_multiple_models(
self,
experiment: Experiment,
num_generator_runs: int,
data: Optional[Data] = None,
n: int = 1,
) -> List[List[GeneratorRun]]:
return []
