Data processing apparatus, data processing method, and medium

摘要

A data processing apparatus obtains a prediction coefficient used to predict first data, from second data which has a lower quality than the first data. The apparatus includes a prediction-data extracting section for extracting prediction data used to predict the first data, from the second data; a prediction-coefficient calculation section for obtaining a prediction-coefficient set used to predict the first data by using the first data and the prediction data to both of which a predetermined weight is applied; a prediction-value calculation section for obtaining the prediction value of the first data by using the prediction data and the prediction-coefficient set; a prediction-error calculation section for obtaining the prediction error of the prediction value against the first data; and a weight changing section for changing the weight applied to the first data and to the prediction data, according to the prediction error. The apparatus can obtain a prediction value having a smaller prediction error.