Complex Knowledge Base Question Answering: A Survey

Understand

Knowledge base question answering (KBQA) aims to answer a question over a knowledge base (KB).

• Early studies mainly focused on answering simple questions over KBs and achieved great success.
• However, their performance on complex questions is still far from satisfactory.
• Therefore, in recent years, researchers propose a large number of novel methods, which looked into the challenges of answering complex questions.