Yield percentage managing method and apparatus, and computer-readable storage medium

A yield percentage managing method for managing a yield percentage of a target processed product with respect to at least one target raw material by use of a computer, comprising:

• correcting or updating to correct or update the yield percentage based on a processed amount K which indicates a total number or weight of target items of the target processed product, processed from the target raw material;
• performing a first calculation of an amount P of the target raw material used during a present term, from P=M+N−L, where M denotes an amount of initial stock of the target raw material, N denotes a buying amount of the target raw material, and L denotes an amount of final stock of the target raw material;
• and
• performing a second calculation of a theoretical value Q of the amount of the target raw material used during the present term, from Q=K/Yr, using the processed amount K and an initial value Yr of the yield percentage the target product,
• wherein the correcting or updating obtains a compared result by comparing the amount P of the target raw material used and the theoretical value Q, to automatically correct or update the initial value Yr depending on an error of the compared result.

A yield percentage managing apparatus managing a yield percentage of a target processed product with respect to at least one target raw material by use of a computer, comprising:

• a control unit to correct or update the yield percentage based on a processed amount K which indicates a total number or weight of target items of the target processed product processed from the target raw material;
• a first calculation unit to calculate an amount P of the target raw material used during a present term from P =M+N−L, where M denotes an amount of initial stock of the target raw material, N denotes a buying amount of the target raw material, and L denotes an amount of final stock of the target raw material;
• and
• a second calculation unit to calculate a theoretical value Q of the amount of the target raw material used during the present term from Q=K/Yr, using the processed amount K and an initial value Yr of the yield percentage of the target product,
• wherein said control unit includes a correction part configured to obtain a compared result by comparing the amount P of the target raw material used and the theoretical value Q, and for automatically correcting or updating the initial value Yr depending on an error of the compared result.

A computer-readable storage medium which stores a program for causing a computer to manage a yield percentage of a target processed product with respect to a target raw material, said program comprising:

• a correcting or updating procedure causing the computer to correct or update the yield percentage based on a processed amount K which indicates a total number or weight of target items of the target processed product, processed from the target raw material;
• a first calculation procedure causing the computer to calculate an amount P of the target raw material used during a present term from P=M+N−L, where M denotes an amount of initial stock of the target raw material, N denotes a buying amount of the target raw material, and L denotes an amount of final stock of the target raw material;
• a second calculation procedure causing the computer to calculate a theoretical value Q of the amount of the target raw material used during the present term from Q=K/Yr, using the processed amount K and an initial value Yr of the yield percentage the target product;
• and
• the correcting or updating procedure causes the computer to obtain a compared result by comparing the amount P of the target raw material used and the theoretical value Q, and to automatically correct or update the initial value Yr depending on an error of the compared result.