Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved quantification of naphthalene using non-linear Partial Least
  Squares Regression   A test dataset is generated using temperature cycled operation with a WO3
metal oxide semiconductor (MOS) gas sensor. Six concentrations of naphthalene
from 0 to 40 ppb are measured and, subsequently, used to evaluate the
performance of three variants of Partial Least Squares Regression (PLSR).
Ordinary PLSR produces highly non-linear models due to the non-linear response
of the sensor. Double-logarithmic data results in a model with much better
linearity which has a resolution of 4 ppb in the range from 0 to 20 ppb. The
more complex Locally Weighted PLSR (LW-PLSR) produces an even better model,
especially for higher concentrations, without making any assumptions for
relationships in the underlying data.

12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat