Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimizing the ecological connectivity of landscapes with generalized
  flow models and preprocessing   In this paper we consider the problem of optimizing the ecological
connectivity of a landscape under a budget constraint by improving habitat
areas and ecological corridors between them. We consider a formulation of this
problem in terms of graphs in which vertices represent the habitat areas and
arcs represent a probability of connection between two areas that depend on the
quality of the respective corridor. We propose a new generalized flow model
that improves existing models for this problem and an efficient preprocessing
algorithm that reduces the size of the graphs on which generalized flows is
computed. Reported numerical experiments highlight the benefice of these two
contributions on computation times and show that larger problems can be solved
using them. Our experiments also show that several variants of greedy
algorithms perform relatively well on practical instances while they return
arbitrary bad solutions in the worst case.

37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat