Apparatus and method for calibrating prediction models

An apparatus for calibrating prediction models of an inference service, including a computer program and a processor for executing the computer program, wherein the apparatus for calibrating prediction models of an inference service comprises:

• a drift pattern creating unit configured to detect a latent factor of learning data and create a possible drift pattern for the learning data based on the detected latent factor;
• and
• an instruction executing an individual drift calibrating unit configured to pre-learn calibration information according to a loss function between the learning data and the drift pattern for each drift pattern, and an ensemble drift calibrating unit including a similarity determining unit configured to perform prelearning to determine similarity between recovery data recovered by reconstructing the input drift pattern and the drift pattern,
• wherein the individual drift calibrating units are connected in parallel, and the similarity determining units are connected in parallel to the individual drift calibrating units, respectively.