TRAINING DEVICE AND TRAINING METHOD

A training method, comprising: acquiring pieces of training image information each indicating a training image; generating one-dimensional training image signals respectively corresponding to the pieces of training image information by making the training image indicated by each of the pieces of training image information into one dimension; generating a matrix in which the one-dimensional training image signals are arranged in parallel with each other; calculating a right singular vector and a singular value by performing singular value decomposition on the matrix; generating a trained model that is based on the right singular vector and the singular value and outputs an inference result using, as an explanatory variable, a one-dimensional inference target image signal indicating an image obtained by making an inference target image that is an image obtained by image-capturing an inference target object into one dimension; and outputting the trained model as trained model information.