  This paper introduces the Eighth Dialog System Technology Challenge. In line
with recent challenges, the eighth edition focuses on applying end-to-end
dialog technologies in a pragmatic way for multi-domain task-completion, noetic
response selection, audio visual scene-aware dialog, and schema-guided dialog
state tracking tasks. This paper describes the task definition, provided
datasets, and evaluation set-up for each track. We also summarize the results
of the submitted systems to highlight the overall trends of the
state-of-the-art technologies for the tasks.
