Abstract: In training a target model initialized by borrowing the structure and parameters of a pre-trained source model, the present disclosure provides a transfer learning apparatus and method capable of improving the performance of the target model by fine-tuning the target model using sample-based regularization that increases the similarity between features extracted from training samples belonging to the same class.

Abstract: The present invention relates to a kitchen ventilation system to which a fan having a positive pressure-to-output characteristic is applied. More particularly, the present invention relates to a system for maximizing efficiency of exhausting polluted air at minimum costs by applying a fan having a positive pressure-to-output characteristic to a hood, to improve a ventilation system which is installed vertically in an apartment house to discharge polluted air from kitchen hoods on respective floors to the top of an exhaust duct. The kitchen ventilation system of the present invention comprises an exhaust duct 100 provided at one side of an apartment house, and a hood 200 which is provided in the kitchen on each floor and includes a fan 210 having a positive pressure-to-output characteristic to collect surrounding air and discharge the collected air to the exhaust duct 100.

Abstract: A ventilation system for an underground structure which can internally supply fresh outdoor air by individually sucking and discharging air through fans of underground shafts in the underground structure such as an underground parking lot, underground warehouse, subway space, underground sporting place and underground hangar. The ventilation system for the underground structure includes air supply side fixed frames installed in air supply holes of each floor of the underground structure along one side shaft of the underground structure, air supply fans installed on the air supply side fixed frames toward the air supply holes, air exhaust rooms for forming air exhaust spaces on each floor of the underground structure, air exhaust holes being formed therein toward the other side shaft of the underground structure, air exhaust side fixed frames installed in the air exhaust rooms, and air exhaust fans installed on the air exhaust side fixed frames toward the air exhaust holes.

Abstract: The present invention discloses a ventilation system for an underground structure which can internally supply fresh outdoor air by individually sucking and discharging air through fans of underground shafts in the underground structure such as an underground parking lot, underground warehouse, subway space, underground sporting place and underground hangar. The ventilation system for the underground structure includes air supply side fixed frames installed in air supply holes of each floor of the underground structure along one side shaft of the underground structure, air supply fans installed on the air supply side fixed frames toward the air supply holes, air exhaust rooms for forming air exhaust spaces on each floor of the underground structure, air exhaust holes being formed therein toward the other side shaft of the underground structure, air exhaust side fixed frames installed in the air exhaust rooms, and air exhaust fans installed on the air exhaust side fixed frames toward the air exhaust holes.