Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of Characteristics of Eclipsing Binaries with Spots:
  Phenomenological vs Physical Models   We discuss methods for modeling eclipsing binary stars using the "physical",
"simplified" and "phenomenological" models. There are few realizations of the
"physical" Wilson-Devinney (1971) code and its improvements, e.g. Binary Maker,
Phoebe. A parameter search using the Monte-Carlo method was realized by Zola et
al. (2010), which is efficient in expense of too many evaluations of the test
function. We compare existing algorithms of minimization of multi-parametric
functions and propose to use a "combined" algorithm, depending on if the
Hessian matrix is positively determined. To study methods, a simply
fast-computed function resembling the "complete" test function for the physical
model. Also we adopt a simplified model of an eclipsing binary at a circular
orbit assuming spherical components with an uniform brightness distribution.
This model resembles more advanced models in a sense of correlated parameter
estimates due to a similar topology of the test function. Such a model may be
applied to detached Algol-type systems, where the tidal distortion of
components is negligible.

17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th