Patent ID: 11934782
Assignee: NAVER CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 20:
21. A question answering system comprising:
a search module configured to select candidate paragraphs from a knowledge database to extend a present reasoning path for answering a question, wherein the search module is configured to select the candidate paragraphs based on lexical relevance of the candidate paragraphs to the question and based on lexical relevance of the candidate paragraphs to paragraphs of the present reasoning path;
a neural network tokenizer module configured to determine a token representation of the question, token representations of the paragraphs of the present reasoning path, and token representations of the candidate paragraphs, respectively;
a neural network module configured to:
transform the token representation of the question, the token representations of the paragraphs of the present reasoning path, and the token representations of the candidate paragraphs into vector representations;
append a first variable to the vector representations to produce a second variable; and
determine a score for the present reasoning path based on the second variable; and

an answer inference network module configured to determine a likelihood that the present reasoning path allows inferring an answer to the question and to selectively determine the answer to the question based on multiple different portions of the present reasoning path when the determined likelihood is greater than a predetermined value,
wherein the search module is further configured to selectively add ones of the candidate paragraphs to the present reasoning path based on optimizing the score.