Patent ID: 11860912
Assignee: FORD GLOBAL TECHNOLOGIES, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A system, comprising:
an input interface to receive input indicating a question;
a communication module to establish a communication link with an access network, wherein the communication link provides connectivity to one or more packet data networks (PDNs) via the access network; and
a computer coupled to the input interface and the communication module, the computer including a processor and a memory, the memory storing instructions executable by the processor to:
execute an information retrieval procedure including:
accessing an open-domain context search space of the one or more PDNs;
retrieve, from among a plurality of contexts of the open-domain context search space, a plurality of candidate contexts for answering the question using a question-answering model for open-domain question answering;
identify a set of non-answering contexts among the plurality of candidate contexts, wherein each of the set of non-answering contexts is a respective context for which the question-answering model predicts the question to be unanswerable;
determine an open-domain unanswerability score for the question based on respective relevance scores for the set of non-answering contexts;
determine an open-domain result for the question based on the open-domain unanswerability score for the question;
determine a set of adjusted unanswerability scores including a respective adjusted unanswerability score for each of the set of non-answering contexts;
determine the open-domain unanswerability score for the question based on the set of adjusted unanswerability scores; and
output result information indicating the open-domain result for the question.