Information processing system, information processing method, and non-transitory recording medium

An information processing method comprising:

• by a computer,
• acquiring input information including a natural language sentence input by a user to obtain a natural language sentence based on a first knowledge in a specific application,
• selecting, from one or a plurality of large-scale language models, a tuning model that is a large-scale language model fine-tuned using a second knowledge different from the first knowledge in the specific application,
• acquiring relevant knowledge relevant to the input information from the first knowledge, and
• generating output information including a natural language sentence according to the relevant knowledge and the input information by using the tuning model.

A non-transitory recording medium recorded with an information processing program for causing a computer to function as an information processing system, the information processing program causing the computer to execute:

• acquiring input information including a natural language sentence input by a user to obtain a natural language sentence based on a first knowledge in a specific application,
• selecting, from one or a plurality of large-scale language models, a tuning model that is a large-scale language model fine-tuned using a second knowledge different from the first knowledge in the specific application,
• acquiring relevant knowledge relevant to the input information from the first knowledge, and
• generating output information including a natural language sentence according to the relevant knowledge and the input information by using the tuning model.