code: def get_config(runlocal=""):
      """Gets config for training from scratch for all CV fold iterations."""
      _, patch = VARIANT.split("/")
      runlocal = bool(runlocal)
  
      config = ml_collections.ConfigDict()
      config.experiment_name = "longtail-topvit-kfold"
      # Dataset.
      config.dataset_name = "longtail_baseline"
      config.data_dtype_str = "float32"
      config.dataset_configs = ml_collections.ConfigDict()
      config.dataset_configs.chrm_image_shape = (199, 99)
      config.dataset_configs.pattern_pathname = "inv_16"
      config.dataset_configs.test_fold_num = 0
      config.dataset_configs.num_abnormal = 18
      config.dataset_configs.num_normal = 3087
  
      # Model.
      config.model_name = "topological_vit_classification"
      config.model = ml_collections.ConfigDict()
      config.model.representation_size = None
      config.model.classifier = "token"
      config.model.attention_dropout_rate = 0.0
      config.model.dropout_rate = 0.0
      config.model_dtype_str = "float32"
      config.model.patches = ml_collections.ConfigDict()
      config.model.patches.size = [int(patch), int(patch)]
      config.model.hidden_size = 768
      config.model.num_heads = 12
      config.model.mlp_dim = 768
      config.model.num_layers = 16
  
      # Training.
      config.trainer_name = "transfer_trainer"
      config.optimizer = "adam"
      config.optimizer_configs = ml_collections.ConfigDict()
      config.optimizer_configs.beta1 = 0.9
      config.optimizer_configs.beta2 = 0.999
      config.optimizer_configs.weight_decay = 0.1
      config.explicit_weight_decay = None  # No explicit weight decay
      config.l2_decay_factor = None
      config.max_grad_norm = 1.0
      config.label_smoothing = None
      config.num_training_steps = _TOTAL_STEPS
      # Log eval summary (heavy due to global metrics.)
      config.log_eval_steps = 10
      # Log training summary (rather light).
      config.log_summary_steps = 10
      config.batch_size = 8 if runlocal else 256
      config.rng_seed = 42
      config.init_head_bias = -10.0
      config.class_balancing = True
  
      # Learning rate.
      base_lr = 3e-5
      config.lr_configs = ml_collections.ConfigDict()
      config.lr_configs.learning_rate_schedule = "compound"
      config.lr_configs.factors = "constant*linear_warmup*linear_decay"
      config.lr_configs.total_steps = _TOTAL_STEPS
      config.lr_configs.end_learning_rate = 1e-6
      config.lr_configs.warmup_steps = _WARMUP_STEPS
      config.lr_configs.base_learning_rate = base_lr
  
      # Logging.
      config.write_summary = True
      config.xprof = True  # Profile using xprof.
      config.checkpoint = True  # Do checkpointing.
      config.checkpoint_steps = 5000
      config.debug_train = False  # Debug mode during training.
      config.debug_eval = False  # Debug mode during eval.
  
      # Evaluation:
      config.global_metrics = [
          "chrom_recall",
          "chrom_precision",
          "chrom_f1",
          "chrom_roc_auc_score",
          "chrom_auc_pr_score",
          "chrom_specificity",
      ]
  
      if runlocal:
          config.count_flops = False
  
      return config
  
imports: import itertools
  import ml_collections
label_desc: Use image node_id 3 for calling a global function with example usage: get_config(runlocal) and returns: config