To achieve stand-alone model re-learning in electronic circuits.SOLUTION: An electronic circuit comprises: an acquisition unit for acquiring time-series data recorded at a fixed point as input from a data recording device; an estimation unit for estimating a reference pattern that respectively appears at invariant positions in multiple data constituting the time-series data using a learned model stored in the storage unit; an identification unit for identifying, with reference to the estimated reference pattern, an identification pattern that respectively appears at different positions in the multiple data and outputs the identification resu and a re-learning unit for re-learning the learned model using at least a part of the acquired time-series data in order to estimate again the reference pattern so as to follow changes in the identification environment.SELECTED DRAWING: Figure 1
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