<P> This operator is the inverse to any segmentation operator. While a segmentation 
  operator segments its input concept's <TT>ColumnSet</TT> into several <TT>ColumnSet</TT>s, 
  UnSegment joins several <TT>ColumnSet</TT>s into one. This operator makes sense 
  only if a segmentation operator was applied previously in the chain, because 
  it exactly reverses the function of that operator. To do so, the parameter <I>UnsegmentAttribute</I> 
  specifies indirectly which of the three segmentation operators is reversed: 
<P> If a SegmentationStratified operator is reversed, this parameter gives the 
  name of the <TT>BaseAttribute</TT> that was used for stratified segmentation. 
  Note that this <TT>BaseAttribute</TT> must belong to <I>TheOutputConcept</I> 
  of this operator, because the re-unified <TT>ColumnSet</TT> contains different 
  values for this attribute (whereas before the execution of this operator, the 
  different <TT>ColumnSet</TT>s did not contain this attribute, but each represented 
  one of its values). 
<P> If a SegmentationByPartitioning operator is reversed, this parameter must 
  have the value &quot;(Random)&quot;. 
<P> If a SegmentationWithKMean operator is reversed, this parameter must have 
  the value &quot;(KMeans)&quot;. 
<P> Note that the segmentation to be reversed by this operator can be any segmentation 
  in the chain before this operator. <BR>
  <BR>
<P>
PARAMETERDESCRIPTION
TheInputConcept:inherited
UnsegmentAttribute:see text
TheOutputConcept:inherited
