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NAME

       mlpack_emst - fast euclidean minimum spanning tree

SYNOPSIS

        mlpack_emst -i string [-l int] [-n bool] [-V bool] [-o string] [-h -v]

DESCRIPTION

       This  program  can  compute  the  Euclidean minimum spanning tree of a set of input points
       using the dual-tree Boruvka algorithm.

       The set to calculate the minimum spanning tree of  is  specified  with  the  ’--input_file
       (-i)'  parameter,  and  the  output  may  be  saved  with  the ’--output_file (-o)' output
       parameter.

       The '--leaf_size (-l)' parameter controls the leaf size of the kd-tree  that  is  used  to
       calculate  the  minimum  spanning  tree,  and  if the '--naive (-n)' option is given, then
       brute-force search is used (this is typically much slower in  low  dimensions).  The  leaf
       size  does  not  affect  the  results,  but  it may have some effect on the runtime of the
       algorithm.

       For example, the minimum spanning tree of the input dataset 'data.csv' can  be  calculated
       with a leaf size of 20 and stored as 'spanning_tree.csv' using the following command:

       $ emst --input_file data.csv --leaf_size 20 --output_file spanning_tree.csv

       The  output  matrix  is  a three-dimensional matrix, where each row indicates an edge. The
       first dimension corresponds to  the  lesser  index  of  the  edge;  the  second  dimension
       corresponds  to  the  greater  index  of the edge; and the third column corresponds to the
       distance between the two points.

REQUIRED INPUT OPTIONS

       --input_file (-i) [string]
              Input data matrix.

OPTIONAL INPUT OPTIONS

       --help (-h) [bool]
              Default help info.

       --info [string]
              Get help on a specific module or option.  Default value ''.

       --leaf_size (-l) [int]
              Leaf size in the kd-tree. One-element leaves give the empirically best performance,
              but at the cost of greater memory requirements.  Default value 1.

       --naive (-n) [bool]
              Compute the MST using O(n^2) naive algorithm.

       --verbose (-v) [bool]
              Display  informational  messages  and the full list of parameters and timers at the
              end of execution.

       --version (-V) [bool]
              Display the version of mlpack.

OPTIONAL OUTPUT OPTIONS

       --output_file (-o) [string]
              Output data. Stored as an edge list. Default value ''.

ADDITIONAL INFORMATION

       For further information, including relevant papers, citations,  and  theory,  consult  the
       documentation found at http://www.mlpack.org or included with your distribution of mlpack.