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Dewey. Really? Frustrated!

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Edited: Mar 25, 2:17pm Top

Have temporarily set my LibraryThing catalogue to show Dewey (and wording of it too). Egad, what a mess.

I expected a lot of, as yet, unclassified stuff. But who on earth set it so the Brandenburg Concertos are classed as vocal works? (Just an example). This would take months to correct. I'll probably just ignore this feature.

Mar 25, 3:28pm Top

What are the data sources of the records you're looking at? If you manually added the records you're looking at, LT's going to take the work-level data it can grab. Looking at Brandenburgische Konzerte Nr. 1-3, for example (https://www.librarything.com/work/11857144/editions), most/all of the editions with available data are from Amazon—the ones I checked at least—which are not going to be great sources of classification data. Adding your records from library data sources will bring in the best data, where you can do so at least.

Mar 25, 7:54pm Top

I don't think Amazon supplies Dewey numbers in it's imports

Edited: Mar 26, 2:45am Top

>2 kristilabrie: Quite a lot of them were added manually, yes.

According to memes/stats my top 4 are:

1,869 manual entry
1,254 Koninklijke Bibliotheek
1,164 Amazon.com books
213 Library of Congress

Edited: Mar 26, 7:33am Top

Dewey is common in most English speaking countries, so you need English speaking libraries to get good Dewey data. I have found that many German speaking libraries have filled in a Dewey number but it tends to be 400 or 430, rather than 432.85. For most books that have not been published in English nobody will have seriously tried to assign an exact Dewey number. (Not a problem for me, asI don't want the Dewey anyway.)

That doesn't explain the Brandenburg concerto. My guess is that someone wanted their Bach together, and copied the number off a cantata.

Edited: Mar 26, 10:42am Top

From the little I've been able to find, the 780s were completely revised sometime around the late 1980s-early 1990s. (The crowdsourced labels here support the notion that the 780s were revised at some point, but I don't know how reliable they are.) It's possible that the classification was correct under an earlier version.

Edited: Mar 26, 12:08pm Top

I was just giving one example. "120 days in sodom" by De Sade (the only book by him I ever attempted to read - but that's another matter entirely) is classed as American / Canadian fiction. Whut? And my "graphic novels" are all over the place. I could go on. The whole thing is an absolute mess.

Mar 26, 11:20am Top

>5 MarthaJeanne:: Yes. Here in the Netherlands university libraries, and our national library, have a system similar to Dewey, but heavily adapted. (Public libraries have their very own system).

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