  size of the <TT
CLASS="TYPE"
>tsvector</TT
> representation of a document, thereby
   improving performance.  Normalization does not always have linguistic meaning
   and usually depends on application semantics.
  </P
><P
>   Some examples of normalization:

   <P
></P
></P><UL
COMPACT="COMPACT"
><LI
STYLE="list-style-type: disc"
><P
>      Linguistic - Ispell dictionaries try to reduce input words to a
      normalized form; stemmer dictionaries remove word endings
     </P
></LI
><LI
STYLE="list-style-