Re: Tim Berners-Lee on the Semantic Web

From: Karen Coyle <lists_at_nyob>
Date: Wed, 21 Oct 2009 12:33:38 -0700
To: NGC4LIB_at_LISTSERV.ND.EDU
Matthew & Jonathan:

I agree with both Matthew's bottom-up and Jonathan's sets. To me, a Work 
is a grouping of Expressions, and that means that the "workness" exists 
even if you don't have the information you need to create a Work entity. 
(One of my problems with WEMI is that there seems to be an assumption 
that all of the information to fill in all of the entities will be 
there... which is not the case, see below.) Each level, to me, is the 
sum of the levels below it, so the manifestations add up to what you 
currently know about one or more expressions, and what you can deduce 
about the work. It's a build-up process.

My "resource" btw was intended to be more "superWork" -- WEMI, in my 
mind, are parts of something, not wholes in themselves. The fact that 
they are not whole is what gives me a hard time in thinking of them as 
entities. A Manifestation doesn't have subjects? Or an author? Hmmmm. So 
WEMI is an interdependent set of descriptions, not separate entities. 
That gives me pause.

So how will we, in practice, fill these in? I used as an example a book 
that I found on the street in Berkeley (I get great books out of boxes 
of discards here):

The Conquest of Bread
by Peter Kropotkin
New York Vanguard Press1926

No mention of translation. If I'm cataloging this and don't want to go 
hunting around for more info, I cannot fill in much relating to the W. I 
don't know the original Work title, I don't know what language it was 
originally written in. This is probably not the first version, since he 
died in 1921.

I need to create a manifestation "entity" without a work "entity". But I 
want my manifestation to have an author and subject headings. What can I 
do? I think I should be able to create an entity based on what I know. 
And if it goes into a larger context where manifestation author: Peter 
Kropotkin and manifestation title: The conquest of bread matches a 
record that also has a link to a work with:

Author     Kropotkin, Petr Alekseevich, kni?az?, 1842-1921.      
Work Title     Conquête du pain.

Then my data can hook up to that data and in a sense gets connected to 
the W, which I couldn't do on my own. But maybe I gave it the subject 
"Agriculture and Communism" and the W it hooks up to gave it the subject 
"Anarchism". Then my subject enhances the W.

So the W is an ever-changing set that is the sum of the E's and M's (and 
I's) in its universe. And if it's designed as linked data, all of these 
parts can more easily come together.

[In my mind, which draws much better than my hands do, these are like 
tinker toys or jigsaw puzzle pieces, or even molecules, that float 
around and fit together when they meet. So I may have piece f, g, and l 
and the Work has piece g, s and z, and when they meet they form g, f, l, 
s, z.]

kd

-
-----------------------------------
Karen Coyle / Digital Library Consultant
kcoyle@kcoyle.net http://www.kcoyle.net
ph.: 510-540-7596   skype: kcoylenet
fx.: 510-848-3913
mo.: 510-435-8234
------------------------------------
Received on Wed Oct 21 2009 - 15:35:30 EDT