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arXiv · 2302.06674

PK-ICR: Persona-Knowledge Interactive Context Retrieval for Grounded Dialogue

Minsik Oh·Joosung Lee·Jiwei Li·Guoyin Wang
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Abstract

Identifying relevant persona or knowledge for conversational systems is critical to grounded dialogue response generation. However, each grounding has been mostly researched in isolation with more practical multi-context dialogue tasks introduced in recent works. We define Persona and Knowledge Dual Context Identification as the task to identify persona and knowledge jointly for a given dialogue, which could be of elevated importance in complex multi-context dialogue settings. We develop a novel grounding retrieval method that utilizes all contexts of dialogue simultaneously. Our method requires less computational power via utilizing neural QA retrieval models. We further introduce our novel null-positive rank test which measures ranking performance on semantically dissimilar samples (i.e. hard negatives) in relation to data augmentation.

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Minsik Oh, Joosung Lee, Jiwei Li, Guoyin Wang. 2023-02-13. PK-ICR: Persona-Knowledge Interactive Context Retrieval for Grounded Dialogue. https://arxiv.org/abs/2302.06674

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