A dynamic model in which a change of an analysis target phenomenon in a temporal direction and a spatial direction is accurately reflected is generated with a relatively small operation amount. An information processing device (1) includes: a reconfiguration section (103) that generates reconfiguration data by reconfiguring time-series data (111) from part of frequency components of the time-series data obtained as a result of observation of an analysis target phenomenon in a plant; and an analysis section (104) that carries out spatio-temporal analysis on the reconfiguration data to generate a dynamic model (112).