Dial BeInfo for Faithfulness: Improving Factuality of Information-Seeking Dialogue via Behavioural Fine-Tuning
CoRR(2023)
Abstract
Factuality is a crucial requirement in information seeking dialogue: the
system should respond to the user's queries so that the responses are
meaningful and aligned with the knowledge provided to the system. However, most
modern large language models suffer from hallucinations, that is, they generate
responses not supported by or contradicting the knowledge source. To mitigate
the issue and increase faithfulness of information-seeking dialogue systems, we
introduce BeInfo, a simple yet effective method that applies behavioural tuning
to aid information-seeking dialogue. Relying on three standard datasets, we
show that models tuned with BeInfo} become considerably more faithful to the
knowledge source both for datasets and domains seen during BeInfo-tuning, as
well as on unseen domains, when applied in a zero-shot manner. In addition, we
show that the models with 3B parameters (e.g., Flan-T5) tuned with BeInfo
demonstrate strong performance on data from real `production' conversations and
outperform GPT4 when tuned on a limited amount of such realistic in-domain
dialogues.
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