Hi All

Ive got a few terms I need explaining.

I came across a diagram of an opensource metasearch engine but require some terms explaining.

The terms Are

Stemming , Stopping .Cleaning of Titles and Snippets.

Thus Ive found some information on Stemming I cant find anything on cleaning and stopping of Titles and snippets.

If anyone can provide url or can an explanation that would be great.

thanks