rs to use in string attributes.</pre>
 
 <pre> -date &lt;num&gt;
  The number of date attributes (default 0).</pre>
 
 <pre> -relational &lt;num&gt;
  The number of relational attributes (default 0).</pre>
 
 <pre> -relational-nominal &lt;num&gt;
  The number of nominal attributes in a rel. attribute (default 1).</pre>
 
 <pre> -relational-nominal-values &lt;num&gt;
  The number of values for nominal attributes in a rel. attribute (default 2).</pre>
 
 <pre> -relational-numeric &lt;num&gt;
  The number of n