IMPROVING METHOD, PRESENTING METHOD, AND PREDICTING METHOD FOR EVALUATION INDEX, METHOD FOR PRESENTING PREDICTED VALUE OF EVALUATION INDEX, AND STORAGE MEDIUM FOR THEM

摘要

PROBLEM TO BE SOLVED: To provide methods which can easily present how to change those variables specifically on the whole even an evaluation index exerts influence among the variables and improve the evaluation index. SOLUTION: The inter-refractivity of variables to other variables affecting the evaluation index is found from past data and used to calculate variation of the evaluation index with the variables; and the value of the variable affecting the evaluation index most among the variables is varied to the maximum value and the value of the variable obtained at this time is substituted to find the evaluation index again.