The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Mar. 31, 2023
Amazon Technologies, Inc., Seattle, WA (US);
Wayne Chi, Santa Clara, CA (US);
Travis Reed Goodwin, Seattle, WA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Approaches for determining continuous confidence scores for rule-based negation detection systems overcome deficiencies of existing rule-based negation detection systems that provide only binary output (e.g., negated or not negated). The approaches encompass a pointwise mutual information (PMI)-based approach in which PMI is measured between negation cue words and gold-standard negation annotations in a reference dataset. The approaches also encompass a conditional probability-based approach in which the condition probabilities that gold-standard negations exist in a reference dataset for negation cue words are measured. In both approaches, a form of association between negation cue words and gold-standard negations are measured to provide a more accurate indication of the rule-based system's confidence in a negation determination compared to a binary output.