"centroid" as a name for this comes from whois++ (see
http://www.mirrorservice.org/sites/ftp.isi.edu/in-notes/rfc1835.txt
section 1.3).

However, I'm sure it has another even older name.

Matthew 

> -----Original Message-----
> From: SRU (Search and Retrieve Via URL) Implementors 
> [mailto:[log in to unmask]] On Behalf Of Peter Noerr
> Sent: 26 October 2005 16:56
> To: [log in to unmask]
> Subject: Re: federated search
> 
> >
> > Rob is adding another level of complexity often known as a centroid.
> >
> > Matthew
> >
> >
> 
> I've never heard this function called a 'centroid' before. 
> "Database discovery" or similar or even "index 
> concatenation", but no "centroids". Do you have a reference? 
> Or will I have to do a metasearch for it?
> 
> Peter
>