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    Network evolution
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Computes how various statistical properties of a network change over time.
The program loads a sequence of snapshots and produces plots of densification
power law, shrining diameter, fraction of nodes in largest connected component
over time and similar.

The code works under Windows with Visual Studio or Cygwin with GCC,
Mac OS X, Linux and other Unix variants with GCC. Make sure that a
C++ compiler is installed on the system. Visual Studio project files
and makefiles are provided. For makefiles, compile the code with
"make all".

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Parameters:

   -i:Input graphs (each file is a graph snapshot, or use "DEMO") (default:'graph*.txt')
   -o:Output file name prefix (default:'over-time')
   -t:Description (default:'')
   -s:How much statistics to calculate?
    1:basic, 2:degrees, 3:no-diameter, 4:no-distributions, 5:no-svd, 6:all-statistics (default:6)
    
Generally -s:1 is the fastest (computes the least statistics), while -s:6 
takes longest to run but calculates all the statistics.

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Usage:

Compute the evolution of a ForestFire graph model:

netstat -i:DEMO
