Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Automatic sensor-based detection and classification of climbing
  activities   This article presents a method to automatically detect and classify climbing
activities using inertial measurement units (IMUs) attached to the wrists, feet
and pelvis of the climber. The IMUs record limb acceleration and angular
velocity. Detection requires a learning phase with manual annotation to
construct the statistical models used in the cusum algorithm. Full-body
activity is then classified based on the detection of each IMU.

18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom