diff --git a/examples/tutorials/try_optuna.ipynb b/examples/tutorials/try_optuna.ipynb
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+++ b/examples/tutorials/try_optuna.ipynb
@@ -0,0 +1,1159 @@
+{
+ "cells": [
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "id": "c25b63fd",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "# --- Setup: Logging and Display Configuration ---\n",
+ "# Configure logging to see training progress and plotly to render as PNG for VS Code compatibility\n",
+ "import logging\n",
+ "import pandas as pd\n",
+ "import plotly.io as pio\n",
+ "\n",
+ "pd.options.plotting.backend = \"plotly\"\n",
+ "pio.renderers.default = \"png\" # Use PNG for VS Code notebook compatibility\n",
+ "\n",
+ "logging.basicConfig(level=logging.INFO, format=\"[%(asctime)s][%(levelname)s] %(message)s\")\n",
+ "logger = logging.getLogger(__name__)\n",
+ "logging.getLogger(\"choreographer\").setLevel(logging.ERROR)\n",
+ "logging.getLogger(\"kaleido\").setLevel(logging.ERROR)\n",
+ "logging.getLogger(\"choreographer\").disabled = True\n",
+ "logging.getLogger(\"kaleido\").disabled = True"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "id": "84299333",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "/Users/fleur.petit/projects/openstef/.venv/lib/python3.12/site-packages/tqdm/auto.py:21: TqdmWarning:\n",
+ "\n",
+ "IProgress not found. Please update jupyter and ipywidgets. See https://ipywidgets.readthedocs.io/en/stable/user_install.html\n",
+ "\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Downloading load_measurements/mv_feeder/OS Gorredijk.parquet...\n"
+ ]
+ },
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "/Users/fleur.petit/projects/openstef/.venv/lib/python3.12/site-packages/huggingface_hub/utils/_validators.py:202: UserWarning:\n",
+ "\n",
+ "The `local_dir_use_symlinks` argument is deprecated and ignored in `hf_hub_download`. Downloading to a local directory does not use symlinks anymore.\n",
+ "\n",
+ "[2026-03-26 11:11:52,083][INFO] HTTP Request: HEAD https://huggingface.co/datasets/OpenSTEF/liander2024-energy-forecasting-benchmark/resolve/main/load_measurements/mv_feeder/OS%20Gorredijk.parquet \"HTTP/1.1 302 Found\"\n",
+ "[2026-03-26 11:11:52,244][INFO] HTTP Request: HEAD https://huggingface.co/datasets/OpenSTEF/liander2024-energy-forecasting-benchmark/resolve/main/weather_forecasts_versioned/mv_feeder/OS%20Gorredijk.parquet \"HTTP/1.1 302 Found\"\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "✓ load_measurements/mv_feeder/OS Gorredijk.parquet downloaded\n",
+ "Downloading weather_forecasts_versioned/mv_feeder/OS Gorredijk.parquet...\n",
+ "✓ weather_forecasts_versioned/mv_feeder/OS Gorredijk.parquet downloaded\n",
+ "Downloading EPEX.parquet...\n"
+ ]
+ },
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "[2026-03-26 11:11:52,424][INFO] HTTP Request: HEAD https://huggingface.co/datasets/OpenSTEF/liander2024-energy-forecasting-benchmark/resolve/main/EPEX.parquet \"HTTP/1.1 302 Found\"\n",
+ "Warning: You are sending unauthenticated requests to the HF Hub. Please set a HF_TOKEN to enable higher rate limits and faster downloads.\n",
+ "[2026-03-26 11:11:52,425][WARNING] Warning: You are sending unauthenticated requests to the HF Hub. Please set a HF_TOKEN to enable higher rate limits and faster downloads.\n",
+ "[2026-03-26 11:11:52,607][INFO] HTTP Request: HEAD https://huggingface.co/datasets/OpenSTEF/liander2024-energy-forecasting-benchmark/resolve/main/profiles.parquet \"HTTP/1.1 302 Found\"\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "✓ EPEX.parquet downloaded\n",
+ "Downloading profiles.parquet...\n",
+ "✓ profiles.parquet downloaded\n",
+ "\n",
+ "✅ All files downloaded successfully!\n"
+ ]
+ }
+ ],
+ "source": [
+ "# Download dataset from HuggingFace Hub\n",
+ "# The dataset is stored as parquet files for efficient loading\n",
+ "from huggingface_hub import hf_hub_download # pyright: ignore[reportUnknownVariableType]\n",
+ "from openstef_core.base_model import Path\n",
+ "\n",
+ "repo_id = \"OpenSTEF/liander2024-energy-forecasting-benchmark\" # Public benchmark dataset\n",
+ "local_dir = Path(\"./liander_dataset\")\n",
+ "target = \"mv_feeder/OS Gorredijk\" # Specific installation to focus on\n",
+ "\n",
+ "# Download required files: load measurements, weather, prices, and profiles\n",
+ "files_to_download = [\n",
+ " f\"load_measurements/{target}.parquet\", # Energy consumption data\n",
+ " f\"weather_forecasts_versioned/{target}.parquet\", # Weather features\n",
+ " \"EPEX.parquet\", # Electricity prices (optional feature)\n",
+ " \"profiles.parquet\" # Standard load profiles (optional feature)\n",
+ "]\n",
+ "\n",
+ "for filename in files_to_download:\n",
+ " print(f\"Downloading {filename}...\")\n",
+ " hf_hub_download(repo_id=repo_id, filename=filename, repo_type=\"dataset\",\n",
+ " local_dir=local_dir, local_dir_use_symlinks=False) # pyright: ignore[reportCallIssue]\n",
+ " print(f\"✓ {filename} downloaded\")\n",
+ "\n",
+ "print(\"\\n✅ All files downloaded successfully!\")"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "id": "524f65a1",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "[2026-03-26 11:11:54,019][WARNING] Parquet file does not contain 'sample_interval' attribute. Using default value of 15 minutes.\n",
+ "[2026-03-26 11:11:54,040][WARNING] Parquet file does not contain 'sample_interval' attribute. Using default value of 15 minutes.\n",
+ "[2026-03-26 11:11:54,065][WARNING] Parquet file does not contain 'sample_interval' attribute. Using default value of 15 minutes.\n",
+ "[2026-03-26 11:11:54,075][WARNING] Parquet file does not contain 'sample_interval' attribute. Using default value of 15 minutes.\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Dataset shape: (35136, 28)\n",
+ "Date range: 2024-01-01 00:00:00+00:00 to 2024-12-31 23:45:00+00:00\n"
+ ]
+ },
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