Click Here for the full article.

Use Perl and a regular-expression generator to search for and display LDAP database records (part 2), Learn how to add a scoring system to the search engine described in Part 1 of this "LDAP search engines" series. Develop your own metaphone-matching techniques for spelling corrections, query. IBM developerWorks podcast with Scott Laningham

Original link at IBM developerworks. Please use the cached copy if the link is dead.