Well Begun is Half Done: Generator-agnostic Knowledge Pre-Selection for Knowledge-Grounded Dialogue

Lang Qin, YAO ZHANG, Hongru Liang, Jun Wang, Zhenglu Yang

Submission Type: Regular Long Paper

Submission Track: Dialogue and Interactive Systems

Keywords: Knowledge-grounded Dialogue, Knowledge Selection, Generator-agnostic

Abstract:

Accurate knowledge selection is critical in knowledge-grounded dialogue systems.
Towards a closer look at it, we offer a novel perspective to organize existing literature, i.e., knowledge selection coupled with, after, and before generation.
We focus on the third under-explored category of study, which can not only select knowledge accurately in advance, but has the advantage to reduce the learning, adjustment, and interpretation burden of subsequent response generation models, especially LLMs.
We propose $\tt{GATE}$, a generator-agnostic knowledge selection method, to prepare knowledge for subsequent response generation models by selecting context-related knowledge among different knowledge structures and variable knowledge requirements.
Experimental results demonstrate the superiority of $\tt{GATE}$, and indicate that knowledge selection before generation is a lightweight yet effective way to facilitate LLMs (e.g., ChatGPT) to generate more informative responses.

Submission Number: 4926