Another interesting extension of this would be a set analysis of the
records containing the field or subfield--e.g., for 583, a date of
publication profile, a date of last update profile, proportion of
identified government documents, etc.

Also, would it be possible to mark the subfields which are found in
WorldCat but not in the MARC standard, e.g., for 583, subfields t, w,
and y? Either that, or to exclude fields which fail validation from
the count?

Stephen

On Wed, Mar 6, 2013 at 1:32 PM, Tennant,Roy <[log in to unmask]> wrote:
> Presently I've only committed to do this for 2013. But even after that it
> may be available indefinitely, with the emphasis on "may".
> Roy
>
>
>
> On Mar 6, 2013, at 11:25 AM, "Dana Pearson" <[log in to unmask]> wrote:
>
> oh, by the way, what is the timeframe for "temporary"?
>
> On Wed, Mar 6, 2013 at 12:09 PM, Tennant,Roy <[log in to unmask]> wrote:
>>
>> Recently I released a new web site/temporary service to report on how MARC
>> has actually been used as evidenced by the WorldCat aggregation (now about
>> 290 million records):
>>
>> <http://experimental.worldcat.org/marcusage/>
>>
>> Initially, we report simple numbers on which fields and subfields occur,
>> but for some subfields we go further. For selected subfields, we also find
>> all of the strings that occur, count their occurrences, and order them by
>> that number. For example:
>>
>> <http://experimental.worldcat.org/marcusage/2013-01-583a.txt>
>>
>> Anyone can request such a report for any given subfield. We intend to do
>> this quarterly for 2013, so we can see changes over time. One of our goals
>> is to provide a corpus of evidence that may be useful for considering
>> opportunities and issues of moving beyond MARC — for example, the Library of
>> Congress BIBFRAME work. We have also already used it for internal quality
>> control work. Thanks,
>> Roy Tennant
>> OCLC Research
>
>
>
>
> --
> Dana Pearson
> dbpearsonmlis.com



-- 
Stephen Hearn, Metadata Strategist
Technical Services, University Libraries
University of Minnesota
160 Wilson Library
309 19th Avenue South
Minneapolis, MN 55455
Ph: 612-625-2328
Fx: 612-625-3428