A spectral data processing apparatus where a particular spectrum is displayed on a display based on 3D spectral data having time, signal intensities, and a prescribed parameter, comprising: a 2D spectrum calculating unit compiling the signal intensities for each point in time and calculating 2D spectrum of the signal intensities and the prescribed parameter, based on the spectral data; a signal-intensity-time change calculating unit calculating change in signal intensity over time for each value of the prescribed parameter, based on the spectral data; and a display controlling unit displaying, on the display, the 2D spectrum and the change in the signal intensity over time in superimposed manner using multicolor, light and shading, or change in brightness, so that the change in signal intensity over time is displayed to match the prescribed parameter of the 2D spectrum and the time changes along the axis of signal intensities of the 2D spectrum.

According to one embodiment, a model generation system includes a base model generator, a similarity calculator, a modified model generator, and a generalization ability calculator. The base model generator generates a base model of a relationship between an input variable group and an output variable. The input variable group includes selected input variables selected from input variables. The similarity calculator calculates each similarity between the selected input variables and unselected input variables. The unselected input variables is included in the input variables. The modified model generator interchanges at least a portion of the plurality of selected input variables with at least a portion of the plurality of unselected input variables to generate another input variable group. The modified model generator generates a modified model of a relationship between the output variable and the other input variable group. The generalization ability calculator calculates generalization abilities of the models.