Answerability-aware open domain question answering

The present disclosure provides' Answering-perceivable Open Domain Question Answering '. A system includes an input interface to receive an input indicative of a question; a communication module for establishing a communication link with an access network, where the communication link provides a connection with one or more packet data networks (PDNs) through the access network; and a computer coupled with the input interface and the communication module, the computer including a processor and a memory storing instructions executable by the processor to perform: executing an information retrieval program, comprising accessing an open domain context search space of one or more PDNs and retrieving a plurality of candidate contexts from a plurality of contexts of the open domain context search space for answering questions using a question answering model for open domain question answering; identifying a set of non-answered contexts in the plurality of candidate contexts, wherein each of the set of non-answered c