Task Lineages: Dialog State Tracking for Flexible Interaction

TitleTask Lineages: Dialog State Tracking for Flexible Interaction
Publication TypeConference Paper
Year of Publication2016
AuthorsLee, S., and A. Stent
Conference NameProceedings of SIGDIAL
Keywordsdialog
Abstract

We consider the gap between user demands
for seamless handling of complex interactions,
and recent advances in dialog state
tracking technologies. We propose a new
statistical approach, Task Lineage-based
Dialog State Tracking (TL-DST), aimed
at seamlessly orchestrating multiple tasks
with complex goals across multiple domains
in continuous interaction. TL-DST
consists of three components: (1) task
frame parsing, (2) context fetching and (3)
task state update (for which TL-DST takes
advantage of previous work in dialog state
tracking). There is at present very little
publicly available multi-task, complex goal
dialog data; however, as a proof of concept,
we applied TL-DST to the Dialog State
Tracking Challenge (DSTC) 2 data, resulting
in state-of-the-art performance. TLDST
also outperforms the DSTC baseline
tracker on a set of pseudo-real datasets involving
multiple tasks with complex goals
which were synthesized using DSTC3 data.

Refereed DesignationRefereed