A Focused Study on Sequence Length for Dialogue Summarization

Understand

Output length is critical to dialogue summarization systems.

• The dialogue summary length is determined by multiple factors, including dialogue complexity, summary objective, and personal preferences.
• In this work, we approach dialogue summary length from three perspectives.
• First, we analyze the length differences between existing models' outputs and the corresponding human references and find that summarization models tend to produce more verbose summaries due to their pretraining objectives.