Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sobi: An Interactive Social Service Robot for Long-Term Autonomy in Open
  Environments   Long-term autonomy in service robotics is a current research topic,
especially for dynamic, large-scale environments that change over time. We
present Sobi, a mobile service robot developed as an interactive guide for open
environments, such as public places with indoor and outdoor areas. The robot
will serve as a platform for environmental modeling and human-robot
interaction. Its main hardware and software components, which we freely license
as a documented open source project, are presented. Another key focus is Sobi's
monitoring system for long-term autonomy, which restores system components in a
targeted manner in order to extend the total system lifetime without unplanned
intervention. We demonstrate first results of the long-term autonomous
capabilities in a 16-day indoor deployment, in which the robot patrols a total
of 66.6 km with an average of 5.5 hours of travel time per weekday, charging
autonomously in between. In a user study with 12 participants, we evaluate the
appearance and usability of the user interface, which allows users to
interactively query information about the environment and directions.

23
The categories of this paper are: solv-int
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat