Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of Human-like Social Grooming Strategies regarding Richness
  and Group Size   Human beings tend to cooperate with close friends, therefore they have to
construct strong social relationships to recieve cooperation from others.
Therefore they should have acquired their strategies of social relationship
construction through an evolutionary process. The behavior of social
relationship construction is know as "social grooming." In this paper, we show
that there are four classes including a human-like strategy in evolutionary
dynamics of social grooming strategies based on an evolutionary game
simulation. Social relationship strengths (as measured by frequency of social
grooming) often show a much skewed distribution (a power law distribution). It
may be due to time costs constraints on social grooming, because the costs are
too large to ignore for having many strong social relationships. Evolution of
humans' strategies of construction of social relationships may explain the
origin of human intelligence based on a social brain hypothesis. We constructed
an individual-based model to explore the evolutionary dynamics of social
grooming strategies. The model is based on behavior to win over others by
strengthening social relationships with cooperators. The results of
evolutionary simulations show the four classes of evolutionary dynamics. The
results depend on total resources and the ratio of each cooperator's resource
to the number of cooperators. One of the four classes is similar to a human
strategy, i.e. the strategies based on the Yule--Simon process of power law.

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The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg