code: def evaluation_fn(step, width, height, mult=1):
      return (0.1 + width * step / 100) ** (-1) + height * 0.1 * mult
  
file_path: ray/python/ray/tune/examples/hyperopt_conditional_search_space_example.py
imports: import time
  import ray
  from ray import train, tune
  from ray.tune.search import ConcurrencyLimiter
  from ray.tune.schedulers import AsyncHyperBandScheduler
  from ray.tune.search.hyperopt import HyperOptSearch
  from hyperopt import hp
label_desc: Use image node_id 2 for calling a global function with example usage: evaluation_fn(step, width, height, mult) and returns: unknown