Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Overview of the Ninth Dialog System Technology Challenge: DSTC9   This paper introduces the Ninth Dialog System Technology Challenge (DSTC-9).
This edition of the DSTC focuses on applying end-to-end dialog technologies for
four distinct tasks in dialog systems, namely, 1. Task-oriented dialog Modeling
with unstructured knowledge access, 2. Multi-domain task-oriented dialog, 3.
Interactive evaluation of dialog, and 4. Situated interactive multi-modal
dialog. This paper describes the task definition, provided datasets, baselines
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.

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The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con