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:
Feb. 14, 2023
Filed:
Jun. 27, 2019
Amazon Technologies, Inc., Seattle, WA (US);
Arshit Gupta, Seattle, WA (US);
Peng Zhang, Sunnyvale, CA (US);
Rashmi Gangadharaiah, San Jose, CA (US);
Garima Lalwani, Champaign, IL (US);
Roger Scott Jenke, Durham, NC (US);
Hassan Sawaf, Los Gatos, CA (US);
Mona Diab, Seattle, WA (US);
Katrin Kirchhoff, Seattle, WA (US);
Adel A. Youssef, Kirkland, WA (US);
Kalpesh N. Sutaria, Seattle, WA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Techniques are described for a contextual natural language understanding (cNLU) framework that is able to incorporate contextual signals of variable history length to perform joint intent classification (IC) and slot labeling (SL) tasks. A user utterance provided by a user within a multi-turn chat dialog between the user and a conversational agent is received. The user utterance and contextual information associated with one or more previous turns of the multi-turn chat dialog is provided to a machine learning (ML) model. An intent classification and one or more slot labels for the user utterance are then obtained from the ML model. The cNLU framework described herein thus uses, in addition to a current utterance itself, various contextual signals as input to a model to generate IC and SL predictions for each utterance of a multi-turn chat dialog.