Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flat histogram Monte Carlo method   We discuss a sampling algorithm which generates flat histogram in energy. In
combination with transition matrix Monte Carlo, the density of states and
derived quantities such as entropy and free energy as a function of temperature
can be computed in a single simulation.

13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin