clm vol(1)                      USER COMMANDS                       clm vol(1)



  NAME
      clm vol - compute volatile nodes from a set of clusterings

      clmvol is not in actual fact a program. This manual page documents the
      behaviour and options of the clm program when invoked in mode vol. The
      options -h, --apropos, --version, -set, --nop are accessible in all clm
      modes. They are described in the clm manual page.

  SYNOPSIS
      clm vol [-fraction num (nff factor)] [-o fname (output file)] <cl file>+

  DESCRIPTION
      clm vol computes a score for each node, which at a minimum is equal to
      one.  The output is in the form of a matrix containing a single column.
      The score correlates with what is deemed to be volatile behaviour. For
      all pairs of clusterings the set of all intersections is computed, and
      these are considered in turn.  An intersection is deemed to be volatile
      if the size of the intersection is less than half the size of the
      smallest of the two clusters. In that case, for each node in the
      intersection its volatility score is incremented by one over the size of
      the intersection.  The size comparison can be made more stringent by
      increasing the -fraction <frac> option, which is by default set to 0.5.
      Volatility occurs if the size of the intersection is less than <frac>
      times the size of the smallest cluster. If the -fraction value is
      increased all the way up to 1.0, the implication is that an intersection
      is considered volatile unless one of the two clusteres considered is a
      subset of the other.

  AUTHOR
      Stijn van Dongen.

  OPTIONS
      -fraction num (nff factor)
        See the discussion at DESCRIPTION.

      -o fname (output file)

  SEE ALSO
      mclfamily(7) for an overview of all the documentation and the utilities
      in the mcl family.



  clm vol 1.008, 09-308             4 Nov 2009                        clm vol(1)
