Thanks a lot for the kind shout-out Leslie. I have been pondering what
I might propose to discuss at this event, since there is certainly
plenty of fodder. Recently we (OCLC Research) did an investigation of
856 fields in WorldCat (some 40 million of them) and that might prove
interesting. By the time ALA rolls around there may something else
entirely I could talk about.
That's one of the wonderful things about having 250 million MARC
records sitting out on a 32-node cluster. There are any number of
potentially interesting investigations one could do.
Roy
On Thu, Jan 26, 2012 at 2:10 PM, Johnston, Leslie <[log in to unmask]> wrote:
> Roy's fabulous "Bitter Harvest" paper: http://roytennant.com/bitter_harvest.html
>
> -----Original Message-----
> From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of Walter Lewis
> Sent: Wednesday, January 25, 2012 1:38 PM
> To: [log in to unmask]
> Subject: Re: [CODE4LIB] Metadata war stories...
>
> On 2012-01-25, at 10:06 AM, Becky Yoose wrote:
>
>> - Dirty data issues when switching discovery layers or using
>> legacy/vendor metadata (ex. HathiTrust)
>
> I have a sharp recollection of a slide in a presentation Roy Tennant offered up at Access (at Halifax, maybe), where he offered up a range of dates extracted from an array of OAI harvested records. The good, the bad, the incomprehensible, the useless-without-context (01/02/03 anyone?) and on and on. In my years of migrating data, I've seen most of those variants. (except ones *intended* to be BCE).
>
> Then there are the fielded data sets without authority control. My favourite example comes from staff who nominally worked for me, so I'm not telling tales out of school. The classic Dynix product had a Newspaper index module that we used before migrating it (PICK migrations; such a joy). One title had twenty variations on "Georgetown Independent" (I wish I was kidding) and the dates ranged from the early ninth century until nearly the 3rd millenium. (apparently there hasn't been much change in local council over the centuries).
>
> I've come to the point where I hand-walk the spatial metadata to links with to geonames.org for the linked open data. Never had to do it for a set with more than 40,000 entries though. The good news is that it isn't hard to establish a valid additional entry when one is required.
>
> Walter
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