A Result based Portable Framework for Spoken Language Understanding
This work addresses portability issues in multi-turn SLU for task-oriented dialogue systems, though it appears incremental as it builds on existing single-turn models.
The paper tackles the problem of low portability and compatibility of existing multi-turn spoken language understanding (SLU) methods by proposing a novel Result-based Portable Framework (RPFSLU), which enhances all baseline SLU models on the KVRET dataset for multi-turn tasks.
Spoken language understanding (SLU), which is a core component of the task-oriented dialogue system, has made substantial progress in the research of single-turn dialogue. However, the performance in multi-turn dialogue is still not satisfactory in the sense that the existing multi-turn SLU methods have low portability and compatibility for other single-turn SLU models. Further, existing multi-turn SLU methods do not exploit the historical predicted results when predicting the current utterance, which wastes helpful information. To gap those shortcomings, in this paper, we propose a novel Result-based Portable Framework for SLU (RPFSLU). RPFSLU allows most existing single-turn SLU models to obtain the contextual information from multi-turn dialogues and takes full advantage of predicted results in the dialogue history during the current prediction. Experimental results on the public dataset KVRET have shown that all SLU models in baselines acquire enhancement by RPFSLU on multi-turn SLU tasks.