Patent ID: 11893060
Assignee: NAVER CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A question answering system comprising:
a first encoder module configured to receive a question from a computing device via a network, the question including a first plurality of words, and to encode the question into a first vector representation;
a second encoder module configured to encode a document D into a second vector representation, the document including a second plurality of words;
a first reading module configured to generate a third vector representation based on the first and second vector representations;
a first reformulation module configured to generate a first reformulated vector representation for the question based on the first vector representation;
a second reading module configured to generate a fourth vector representation based on the second vector representation and the first reformulated vector representation;
a second reformulation module configured to generate a second reformulated vector representation for the question based on first reformulated vector representation;
an answer module configured to determine an answer to the question based on the second reformulated vector representation and to transmit the answer to the computing device via the network,
wherein the first reading module is configured to determine (a) first and (b) second sets of probabilities that represent (a) a probability of each word of the document being a beginning of an answer span and (b) a probability of each word of the document being an end of the answer span, respectively, the answer span being a span of words of the document that correctly answers the question; and
an extractive attention module configured to, based on the first and second sets of probabilities, determine an attention vector of probabilities of entries of the second vector representation being part of the answer span.