Optimization device, optimization method, and non-transitory computer-readable medium

An optimization method executed by an optimization device, the method comprising:

• storing in advance a plurality of first input/output pairs which are pairs of an input signal and an output signal of a machine learning model in a case where acoustic signals or vibration signals indicating a time-series change in acoustic waves or vibrations, which are observed through optical fiber sensing, are input to the machine learning model as input signals;
• and
• optimizing an optimization target model using the plurality of first input/output pairs.

A non-transitory computer-readable medium storing a program that causes a computer to execute:

• a procedure of storing in advance a plurality of first input/output pairs which are pairs of an input signal and an output signal of a machine learning model in a case where acoustic signals or vibration signals indicating a time-series change in acoustic waves or vibrations, which are observed through optical fiber sensing, are input to the machine learning model as input signals;
• and
• a procedure of optimizing an optimization target model using the plurality of first input/output pairs.