-----Original Message-----
From: Robert Sanderson [mailto:[log in to unmask]]
Sent: Thursday, 23 January 2003 15:03
To: [log in to unmask]
Subject: Re: Scan



>> either using the termValue or using the CQL.  There may be more than one
>> path (or index) (e.g. authority or bibliographic).  In this case if the
CQL

>Wouldn't that be two separate databases?
>And hence my proposed 'related' tag for explain.
>Or if it's indexes then it would be the one specified in the searchClause.

Not always.  Most ILMS systems have both in the same database.  Thinking
generically, there could be other databases out there that have models with
more than one path (index)


>> termFrequency.  It is currently only allowing the equivalent of Z39.50
>> globalOccurrences that gives a single count for the term.  It needs to
have
>> a structure such that it encompasses the occurrence counts for each path
(or
>> index).

>I thought that termFrequency was how many matches a search using the
>attribute combination would return for the term.  And you would need to
>use the anywhere index to find the count of the term in any index.

Agreed.  Example.

termFrequency
   termFrequencyByIndex
      index = author:authority
      occurrences = 12
      index = author:bibliographic
      occurrences = 22


CQL
   index = author:authority:id
   term = 88776655
   index = author:bibliographic:id
   term = 88776655 (typically has the same ID but not necessarily)


Janifer

............................
Janifer Gatenby
Consultant OCLC PICA ITC
Schipholweg 99, 2300 AW Leiden, The Netherlands
+ 31 71 524 65 00
+ 31 71 522 31 19 (fax)
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