Estimating Device and Method, and Program

An estimating method for an estimating device comprising:

• predictive computing means configured to estimate, based on an evaluation matrix made up of an evaluation value indicating an evaluation as to each of a plurality of evaluation targets for each of a plurality of users, and an estimated expression for estimating said evaluation value by computation employing said evaluation matrix, said evaluation value of said evaluation target which has not been subjected to an evaluation by said user, and obtain a predictive evaluation value which is said estimated evaluation value;
• linear combining means configured to subject a plurality of said predictive evaluation values obtained by employing a plurality of said estimated expressions to linear combination employing a linear combination coefficient, thereby obtaining a final estimation result of an evaluation as to said evaluation target which has not been subjected to said evaluation by said user;
• said predictive computing means obtaining said predictive evaluation value regarding said plurality of said estimated expressions based on said estimated expression and said evaluation matrix;
• and
• said linear combining means subjecting each of said predictive evaluation values obtained for each of said estimated expressions to linear combination by employing said linear combination coefficient to obtain the final estimation result of an evaluation as to said evaluation target of said user.

An estimating method for an estimating device including

• a predictive computing unit configured to estimate, based on an evaluation matrix made up of an evaluation value indicating an evaluation as to each of a plurality of evaluation targets for each of a plurality of users, and an estimated expression for estimating said evaluation value by computation employing said evaluation matrix, said evaluation value of said evaluation target which has not been subjected to an evaluation by said user, and obtain a predictive evaluation value which is said estimated evaluation value, and
• a linear combining unit configured to subject a plurality of said predictive evaluation values obtained by employing a plurality of said estimated expressions to linear combination employing a linear combination coefficient, thereby obtaining a final estimation result of an evaluation as to said evaluation target which has not been subjected to said evaluation by said user;
• said predictive computing unit obtaining said predictive evaluation value regarding said plurality of said estimated expressions based on said estimated expression and said evaluation matrix;
• and
• said linear combining unit subjecting each of said predictive evaluation values obtained for each of said estimated expressions to linear combination by employing said linear combination coefficient to obtain the final estimation result of an evaluation as to said evaluation target of said user.