code: def loss_creator(config):
      return bce_dice_loss
  
imports: from __future__ import print_function
  from sklearn.model_selection import train_test_split
  import matplotlib.pyplot
  import albumentations
  import pandas
  import argparse
  import glob
  import os
  import torch
  import torch.nn
  import torch.optim
  import torch.utils.data
  from torchvision.utils import make_grid
  from bigdl.dllib.utils.log4Error import invalidInputError
  from bigdl.orca import init_orca_context, stop_orca_context
  from bigdl.orca.learn.pytorch import Estimator
  from Unet import UNet
  from dataset import *
label_desc: Use image node_id 5 for calling a global function with example usage: loss_creator(config) and returns: bce_dice_loss