code: def _arrayify_dict_values(
      d: Dict[str, List[float]]
  ) -> Dict[str, np.ndarray]:
      """Helper to convert dictionary values to numpy arrays."""
      return {k: np.array(v) for k, v in d.items()}
  
imports: from abc import ABC, abstractmethod
  from collections import defaultdict
  from enum import Enum
  from functools import partial
  from logging import Logger
  from numbers import Number
  from typing import Any, Callable, Dict, Iterable, List, NamedTuple, Optional, Set, Tuple
  import numpy
  from ax.core.observation import Observation, ObservationData
  from ax.core.optimization_config import OptimizationConfig
  from ax.modelbridge.base import ModelBridge
  from ax.utils.common.logger import get_logger
  from ax.utils.stats.model_fit_stats import _correlation_coefficient, _fisher_exact_test_p, _log_likelihood, _mape, _mean_prediction_ci, _rank_correlation, _total_raw_effect, _wmape, compute_model_fit_metrics
label_desc: Use image node_id 4 for calling a global function with example usage: _arrayify_dict_values(d) and returns: unknown