SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, SIGNAL PROCESSING PROGRAM, COMPUTER-READABLE RECORDING MEDIUM ON WHICH IS RECORDED A SIGNAL PROCESSING PROGRAM, AND RADIATION THERAPY DEVICE

摘要

A certain component of an input time series signal (hereinafter referred to as input) is assumed as a cycle time-variable time series signal and correlation analysis between part of the input and the input is carried out, and cycle fluctuation of the input and reliability of the cycle fluctuation are estimated using a result of the correlation analysis and a cycle of the input after predetermined time passes is predicted using the cycle fluctuation and the reliability. In-phase time information whose phase is same as that of the input after the predetermined time and which is time of the input and the reliability of the information are calculated using a result of the correlation analysis and the predicted cycle, and model design information for predicting a value of the input after the predetermined time and accuracy of prediction by the model design information are estimated using the input, time series information of a variation of the input per unit time, in-phase time information and reliability of the information. A prediction model for predicting a value of the input after the predetermined time is produced using the input, in-phase time information and reliability of the information, and model design information, and the value of the input after the predetermined time is predicted and outputted using the prediction model.