ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,319, issued on Oct. 28, was assigned to TUNGSTEN AUTOMATION Corp. (Irvine, Calif.).

"Systems and methods for machine learning key-value extraction on documents" was invented by Hu Cao (Cypress, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A machine learning based key-value extraction model extracts fields/entities from documents. The input images are processed through OCR. A list of words (uni-grams) and their coordinates are extracted from the original images. Following word cleaning and manipulation, n-gram creation (multi-words), and feature engineering, the transformed data is fed into a classification algorithm to predict if a uni-gram...