Re: Widely distributed searching

Alan.Young@zh014.ubs.ubs.ch Thu, 19 November 1992 08:36 UTC

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From: Alan.Young@zh014.ubs.ubs.ch
Message-ID: <"27861 Thu Nov 19 08:30:48 1992"@zh014.ubs.ubs.ch>
To: Richard Letts <R.J.Letts@salford.ac.uk>
Cc: " (OSI Directory Service)" <quipu@cassiopeia.rl.af.mil>, P.Barker@cs.ucl.ac.uk, directory-group@jnt.ac.uk, osi-ds@cs.ucl.ac.uk
In-Reply-To: <"2695 Wed Nov 18 18:07:03 1992"@cs.ucl.ac.uk>
Subject: Re: Widely distributed searching
Phone: +41 1 236 7866

>The load it places on the DSA depends upon several factors:
>	1. Are the searches optimised
>		- looking at the searches produced they are neatly optimised.
>		looking for "r letts" produces a search of the form:
>		(cn=r**)|(sn=letts) - very neat!

An interesting point.  Changing the subject slightly. How do
the algorithms cope with countries, say german-speaking ones
like Switzerland, where the commonName attribute is written
"surname givenName"?  What about surnames with spaces or
punctuation in them (e.g. "van der Wills")? Making assumptions
about the structure of a purported personal name can produce
some extremely non-optimal queries, which mostly fail altogether
when searching for this kind of target.

Alan.

Widely distributed searching Paul Barker
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