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Merge pull request #20 from optuna/align-readme-style-to-template
Aligh package's readme to the template one
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Original file line number | Diff line number | Diff line change |
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import optuna | ||
import optunahub | ||
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def objective(trial: optuna.Trial) -> float: | ||
x = trial.suggest_float("x", 0, 1) | ||
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return x | ||
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if __name__ == "__main__": | ||
module = optunahub.load_module("samplers/demo") | ||
sampler = module.DemoSampler(seed=42) | ||
study = optuna.create_study(sampler=sampler) | ||
study.optimize(objective, n_trials=5) | ||
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print(study.best_trial) |
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Original file line number | Diff line number | Diff line change |
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from typing import Any | ||
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import numpy as np | ||
import optuna | ||
from optuna import Study | ||
from optuna.distributions import BaseDistribution | ||
from optuna.distributions import FloatDistribution | ||
from optuna.distributions import IntDistribution | ||
from optuna.trial import FrozenTrial | ||
import optunahub | ||
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class UserDefinedSampler(optunahub.load_module("samplers/simple").SimpleSampler): # type: ignore | ||
def __init__(self, search_space: dict[str, BaseDistribution]) -> None: | ||
super().__init__(search_space) | ||
self._rng = np.random.RandomState() | ||
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def sample_relative( | ||
self, | ||
study: Study, | ||
trial: FrozenTrial, | ||
search_space: dict[str, BaseDistribution], | ||
) -> dict[str, Any]: | ||
params = {} | ||
for n, d in search_space.items(): | ||
if isinstance(d, FloatDistribution): | ||
params[n] = self._rng.uniform(d.low, d.high) | ||
elif isinstance(d, IntDistribution): | ||
params[n] = self._rng.randint(d.low, d.high) | ||
else: | ||
raise ValueError("Unsupported distribution") | ||
return params | ||
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if __name__ == "__main__": | ||
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def objective(trial: optuna.Trial) -> float: | ||
x = trial.suggest_float("x", 0, 1) | ||
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return x | ||
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sampler = UserDefinedSampler({"x": FloatDistribution(0, 1)}) | ||
study = optuna.create_study(sampler=sampler) | ||
study.optimize(objective, n_trials=20) | ||
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print(study.best_trial.value, study.best_trial.params) |
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Original file line number | Diff line number | Diff line change |
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import optuna | ||
import optunahub | ||
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def objective(trial: optuna.Trial) -> float: | ||
x = trial.suggest_float("x", 0, 1) | ||
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return x | ||
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if __name__ == "__main__": | ||
mod = optunahub.load_module("samplers/simulated_annealing") | ||
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sampler = mod.SimulatedAnnealingSampler() | ||
study = optuna.create_study(sampler=sampler) | ||
study.optimize(objective, n_trials=20) | ||
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print(study.best_trial.value, study.best_trial.params) |
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22 changes: 22 additions & 0 deletions
22
package/visualization/plot_hypervolume_history_with_rp/example.py
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import optuna | ||
import optunahub | ||
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def objective(trial: optuna.trial.Trial) -> tuple[float, float]: | ||
x = trial.suggest_float("x", 0, 5) | ||
y = trial.suggest_float("y", 0, 3) | ||
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v0 = 4 * x**2 + 4 * y**2 | ||
v1 = (x - 5) ** 2 + (y - 5) ** 2 | ||
return v0, v1 | ||
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if __name__ == "__main__": | ||
mod = optunahub.load_module("visualization/plot_hypervolume_history_with_rp") | ||
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study = optuna.create_study(directions=["minimize", "minimize"]) | ||
study.optimize(objective, n_trials=50) | ||
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reference_point = [100.0, 50.0] | ||
fig = mod.plot_hypervolume_history(study, reference_point) | ||
fig.show() |