Add TableArtifactViewer for csv file

[keisuke-umezawa]

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Reference Issues/PRs

NA

What does this implement/fix? Explain your changes.

Make artifact viewer compatible with CSV files.

sample

import logging
import math
import os
from typing import Tuple

import optuna
from optuna_dashboard._app import create_app

host = "127.0.0.1"
port = 8080

optuna.logging.set_verbosity(logging.CRITICAL)

def create_optuna_storage() -> optuna.storages.InMemoryStorage:
    storage = optuna.storages.InMemoryStorage()

    # Single-objective study
    study = optuna.create_study(study_name="single-objective", storage=storage)

    def objective_single(trial: optuna.Trial) -> float:
        x1 = trial.suggest_float("x1", 0, 10)
        x2 = trial.suggest_float("x2", 0, 10)
        x3 = trial.suggest_categorical("x3", ["foo", "bar"])
        return (x1 - 2) ** 2 + (x2 - 5) ** 2

    study.optimize(objective_single, n_trials=100)

    return storage

def main() -> None:
    storage = create_optuna_storage()
    base_path = "./artifacts"
    os.makedirs(base_path, exist_ok=True)
    artifact_store = optuna.artifacts.FileSystemArtifactStore(base_path=base_path)
    app = create_app(storage, artifact_store, debug=True)
    app.run(host=host, port=port, reloader=True)

if __name__ == "__main__":
    main()

You can see artifact loader on study page.

[porink0424]

@keisuke-umezawa Also, This is kind of tiny problem though, the full-screen modal has different size of radius in the upper corners and lower corners.

[keisuke-umezawa]

@porink0424 Thank you for reviewing. I followed your comment. Could you review it again?