Declarative Question Answering over Knowledge Bases Containing Natural Language Text with Answer Set Programming

QUINT: Interpretable Question Answering over Knowledge Bases

We present QUINT, a live system for question answering over knowledge bases. QUINT automatically learns role-aligned utterance-query templates from user questions paired with their answers. When QUINT answers a question, it visualizes the complete derivation sequence from the natural language utterance to the final answer. The derivation provides an explanation of how the syntactic structure of...

OKBQA: an Open Collaboration Framework for Development of Natural Language Question-Answering over Knowledge Bases

KBQA: Learning Question Answering over QA Corpora and Knowledge Bases

Question answering (QA) has become a popular way for humans to access billion-scale knowledge bases. Unlike web search, QA over a knowledge base gives out accurate and concise results, provided that natural language questions can be understood and mapped precisely to structured queries over the knowledge base. The challenge, however, is that a human can ask one question in many different ways. ...

A Joint Model for Question Answering over Multiple Knowledge Bases

As the amount of knowledge bases (KBs) grows rapidly, the problem of question answering (QA) over multiple KBs has drawn more attention. The most significant distinction between multiple KB-QA and single KB-QA is that the former must consider the alignments between KBs. The pipeline strategy first constructs the alignments independently, and then uses the obtained alignments to construct querie...

Clopen Knowledge Bases: Combining Description Logics and Answer Set Programming

Answer Set Programming (ASP) and ontology languages like Description Logics (DLs) play leading roles in Knowledge Representation and Reasoning (KR&R). ASP and DLs have largely orthogonal features because they make very different assumptions regarding the completeness of information, and thus reasoning techniques and algorithms that are deployed in ASP are significantly different from the ones u...