gistfile1.sh

N_TRIALS=10
STORAGE=sqlite:///example.db

STUDY_NAME=`optuna create-study --storage $STORAGE`
DISTRIBUTIONS=`cat distributions.json`

for _ in `seq 1 $N_TRIALS`; do
    trial=`optuna ask \
        --storage $STORAGE \
        --study-name $STUDY_NAME \
        --search-space "$DISTRIBUTIONS" \
        --direction minimize`

    x=`echo $trial | jq .params.x`
    y=`echo "($x - 2) ^ 2" | bc`

    number=`echo $trial | jq .number`

    optuna tell \
        --storage $STORAGE \
        --study-name $STUDY_NAME \
        --trial-number $number \
        --value $y
done

optuna trials --study-name $STUDY_NAME --storage $STORAGE

optuna best-trials --study-name $STUDY_NAME --storage $STORAGE
optuna best-trial --study-name $STUDY_NAME --storage $STORAGE

distributions.json

{
    "x": {
        "name": "UniformDistribution",
        "attributes": {
            "low": -10.0,
            "high": 10.0
        }
    }
}