ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,430,400, issued on Sept. 30, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Multi-class classification using a dual model" was invented by Chao-Min Chang (Taipei, Taiwan), Yu-Chi Tang (New Taipei, Taiwan), Bo-Yu Kuo (Kaohsiung, Taiwan) and Yu-Jin Chen (New Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for receiving a full training data set including a plurality of individual training data set, dividing the plurality of individual training sets into N classes, where N is an integer greater than three, dividing the N classes into M full data classes and N-M partial data classes, performing training to obta...