ALEXANDRIA, Va., July 23 -- United States Patent no. 12,367,421, issued on July 22, was assigned to Oracle International Corp. (Redwood Shores, Calif.).

"Automated data hierarchy extraction and prediction using a machine learning model" was invented by Alberto Polleri (London), Lukas Drapal (Prague), Filip Trojan (Beroun, Czech Republic) and Karel Vaculik (Hluk, Czech Republic).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques are disclosed for revising training data used for training a machine learning model to exclude categories that are associated with an insufficient number of data items in the training data set. The system then merges any data items associated with a removed category into a paren...