Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Multi-Stage Clustering Framework for Automotive Radar Data   Radar sensors provide a unique method for executing environmental perception
tasks towards autonomous driving. Especially their capability to perform well
in adverse weather conditions often makes them superior to other sensors such
as cameras or lidar. Nevertheless, the high sparsity and low dimensionality of
the commonly used detection data level is a major challenge for subsequent
signal processing. Therefore, the data points are often merged in order to form
larger entities from which more information can be gathered. The merging
process is often implemented in form of a clustering algorithm. This article
describes a novel approach for first filtering out static background data
before applying a twostage clustering approach. The two-stage clustering
follows the same paradigm as the idea for data association itself: First,
clustering what is ought to belong together in a low dimensional parameter
space, then, extracting additional features from the newly created clusters in
order to perform a final clustering step. Parameters are optimized for
filtering and both clustering steps. All techniques are assessed both
individually and as a whole in order to demonstrate their effectiveness. Final
results indicate clear benefits of the first two methods and also the cluster
merging process under specific circumstances.

15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg