理解smac的intensify

smac的intensify"/>

理解smac的intensify

• 进入对应区域 smac.optimizer.smbo.SMBO#run

self.aggregate_func
Out[9]: <function smac.optimizer.objective.average_cost(config, run_history, instance_seed_pairs=None)>

找到这个函数，只有一句话：

return np.mean(_cost(config, run_history, instance_seed_pairs))

def _cost(config: Configuration, run_history: RunHistory,instance_seed_pairs=None):try:id_ = run_history.config_ids[config]except KeyError:  # challenger was not running so farreturn []if instance_seed_pairs is None:instance_seed_pairs = run_history.get_runs_for_config(config)costs = []for i, r in instance_seed_pairs:k = RunKey(id_, i, r)costs.append(run_history.data[k].cost)return costs