Re: [search-ws] Scan as a query type

["Ray Denenberg, Library of Congress" <rden@loc.gov>]

Three points:

1. "You cannot ask for the 10th term in an index. "   but you can ask for
the 10th term relative to the seed term. (Backwards will present complexity,
but not that much.)

2. "You cannot ask for the 10th term in an index."   And why not? Our scan
definition has always prevented that, by I never understood that it was not
possible, just that nobody ever wanted to do it.

3. "Indexes are not cardinal." Now I'm not sure what you mean by that. I
thought you meant "an index doesn't have a measurable number of terms" but
now I'm not sure.

--Ray

----- Original Message ----- 
From: "LeVan,Ralph" <levan@oclc.org>
To: "Ray Denenberg, Library of Congress" <rden@loc.gov>;
<search-ws@lists.oasis-open.org>
Sent: Wednesday, November 14, 2007 3:13 PM
Subject: RE: [search-ws] Scan as a query type


You cannot ask for the 10th term in an index.  You cannot specify the
"term number" of the term "beethoven" in a particular index.  Indexes
are not cardinal.

Ralph

-----Original Message-----
From: Ray Denenberg, Library of Congress [mailto:rden@loc.gov]
Sent: Wednesday, November 14, 2007 3:10 PM
To: search-ws@lists.oasis-open.org
Subject: Re: [search-ws] Scan as a query type


 "The result of a query is an ordered set of documents" I would
generalize
that to change "documents" to "records", and simply view each term as a
record.

Cardinality? I'm dubious.  I actually think the termlist is more likely
to
have cardinality than the result set.   We had major discussion of this
at
the 2006 meeting (unfortunately you weren't there), about what to do
with
the mandatory result count parameter when so many search engines can't
provide it.

--Ray


----- Original Message ----- 
From: "LeVan,Ralph" <levan@oclc.org>
To: "Ray Denenberg, Library of Congress" <rden@loc.gov>;
<search-ws@lists.oasis-open.org>
Sent: Wednesday, November 14, 2007 3:05 PM
Subject: RE: [search-ws] Scan as a query type


I don't think so.  The result of a query is an ordered set of documents
with cardinality.  The result of a scan is an ordered set of terms
without cardinality.

Ralph


-----Original Message-----
From: Ray Denenberg, Library of Congress [mailto:rden@loc.gov]
Sent: Wednesday, November 14, 2007 2:03 PM
To: search-ws@lists.oasis-open.org
Subject: [search-ws] Scan as a query type

In light of the multiple query type consideration, I want to kick this
idea
around before we get into the Scan discussion on the SRU list.

Is it reasonable to consider modelling scan as a query type?

--Ray


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