Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generosity, selfishness and exploitation as optimal greedy strategies
  for resource sharing   Resource sharing outside the kinship bonds is rare. Besides humans, it occurs
in chimpanzee, wild dogs and hyenas as well as in vampire bats. Resource
sharing is an instance of animal cooperation, where an animal gives away part
of the resources that it owns for the benefit of a recipient. Taking
inspiration from blood-sharing in vampire bats, here show the emergence of
generosity in a Markov game, which couples the resource sharing between two
players with the gathering task of that resource. At variance with the
classical evolutionary models for cooperation, the optimal strategies of this
game can be potentially learned by animals during their life-time. The players
act greedily, that is, they try to individually maximize only their personal
income. Nonetheless, the analytical solution of the model shows that three non
trivial optimal behaviours emerge depending on conditions. Besides the obvious
case when players are selfish in their choice of resource division, there are
conditions under which both players are generous. Moreover, we also found a
range of situations in which one selfish player exploits another generous
individual, for the satisfaction of both players. Our results show that
resource sharing is favoured by three factors: a long time horizon over which
the players try to optimize their own game, the similarity among players in
their ability of performing the resource-gathering task, as well as by the
availability of resources in the environment. These concurrent requirements
lead to identify necessary conditions for the emergence of generosity.

23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg