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January 2023

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From:
Paul Schaffner <[log in to unmask]>
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Date:
Tue, 17 Jan 2023 09:28:29 -0500
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Given the complications as laid out by Stephen McDonald, I think I
would do some munging in an ordinary text editor: extract all of the 
date1, date2, and date type bytes using a grep-type search of the
marc-broken file(s) (by whatever means your editor supports), then
munge the resultant set of types and dates as your decisions dictate,
adding a marker to each date-combination that you think qualifies,
then count the markers. How long this takes will depend on how many
records are in there and how varied (and reliable) they are. Many
records, for example (to judge by vendor records I have dealt with), 
sporadically switch date1 and date2 for reprints. But if most of
the records are straightforward single-date monographs, it might
take less than five minutes. I've done this sort of thing, e.g., for
the 150,000 ProQuest records for EEBO, their EBook Central records
(200,000+), and the Gale records for ECCO (300,000), in order to
establish title counts by date range and thereby judge coverage.

Paul
-- 
Paul Schaffner | [log in to unmask] | http://www.umich.edu/~pfs/
Digital Content & Collections, Univ of Michigan Library

On Tue, 17 Jan 2023, at 08:53, McDonald, Stephen wrote:
> You face two problems.  First, it would be somewhat difficult to do 
> this in MarcEdit.  MarcEdit is not designed for this kind of date 
> analysis.  But I'm sure someone here can produce a complicated regex 
> that would work for many cases.  The second problem is that in the 
> general case, neither 008/07-10 nor 264$c is guaranteed to contain a 
> simple year to answer this question.  For instance, DATE1 for a 
> journal, monographic series, or multipart item will be the year of the 
> first published volume, which is not necessarily the first year that 
> your library holds.  Some materials may have uncertain dates such as 
> 201u.  For reprints, DATE1 is the date of the reprint while DATE2 is 
> the original publication; which date do you want?  You need to think 
> how you want to handle each of these cases.
>
> 					Steve McDonald
> 					[log in to unmask]
>
>
>
>
> -----Original Message-----
> From: MarcEdit support in technical and instructional matters 
> <[log in to unmask]> On Behalf Of Kathy Joki
> Sent: Monday, January 16, 2023 9:06 PM
> To: [log in to unmask]
> Subject: [External] [MARCEDIT-L] Help with query for number of books 
> published in date ranges
>
> Hi MarcEdit users --
>
> I usually use MarcEdit to clean up bibliographic record before loading 
> them into our library system, but I've been asked for some statistics, 
> and I'm hoping that someone much more proficient than I am can point me 
> in the right direction. I've been asked to get the number of holdings 
> of materials published in date ranges (2013-2023 and 2003-2012.) I'm 
> assuming this can be done using the pub date from the 008 (positions 
> 07-10), but I don't know how to format the query.
>
> Any help would be greatly appreciated.
>
> Thanks,
>
> Kathy
>
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>
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-- 
Paul Schaffner  UM Library : Digital Content & Collections
[log in to unmask] | http://www.umich.edu/~pfs/

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