Before revision:  This paper proposes a method named Filtering before Iteratively REferring (FIRE) for presenting the background knowledge of dialogue agents in retrieval-based chatbots. We first propose a pre-filter, which is composed of a context filter and a knowledge filter .
After revision:  This paper proposes a method named Filtering before Iteratively REferring (FIRE) for this task. In this method, a context filter and a knowledge filter .