Signal processing apparatus, signal processing method, signal processing program, computer-readable recording medium recording the signal processing program, and radiotherapy apparatus
Assuming that a certain component of the input time series signal (hereinafter referred to as input) is a time-varying time series signal, a correlation analysis between a part of the input and the input is performed, and the result of the correlation analysis is used. Estimating the period variation of the input and its reliability, predicting a period until a predetermined time after the input using these, and using the result of the correlation analysis and the prediction period, the predetermined time of the input In-phase time information, which is the time of the input having the same phase as the later phase, and its reliability are calculated, and the input, time series information of the amount of change per unit time of the input, and the same-phase time Using the information and its reliability, the model design information for predicting the value of the input after the predetermined time, and the accuracy of the prediction by the model design information are estimated, the input, the in-phase time information, and Using the reliability and the model design information, the predetermined time of the input Values to create a predictive model that predicts, and outputs the predicted value after the predetermined time of the input using the predictive model.入力時系列信号（以下、入力という）の或る成分を周期時変の時系列信号と仮定し、前記入力の一部と前記入力との相関解析を行ない、前記相関解析の結果を用いて、該入力の周期変動及びその信頼度を推定し、これらを用いて該入力の所定時間後までの周期を予測し、前記相関解析の結果と該予測周期とを用いて、該入力の該所定時間後の位相と同位相となる該入力の時刻である同位相時刻情報及びその信頼度とを算出し、該入力と、該入力の単位時間当たりの変化量の時系列情報と、該同位相時刻情報及びその信頼度とを用いて、該入力の該所定時間後の値を予測するモデル設計情報と、該モデル設計情報による予測の精度とを推定し、該入力と、該同位相時刻情報及びその信頼度と、該モデル設計情報とを用いて、該入力の該所定時間後の値を予測する予測モデルを作成し、該予測モデルを用いて該入力の該所定時間後の値を予測して出力する。
