Quoting Ross Singer <rossfsinger_at_GMAIL.COM>:
> My questions would be -- if order matters (and... I think it does,
> yeah?), these should probably be in an rdfs:Seq or have some notion of
> the order of coordination.
>
Order is complicated in LCSH (as is everything else ;-)). In a given
heading, the order that the subfields are written in the MARC record
is the order that must be retained. In some cases, changing the order
actually changes the meaning of the heading. HOWEVER, the order does
not give you the facet type. So in some faceted systems, you have a
fixed number of facets and they are always in the same order:
topic / place / time / genre (or something like that)
LCSH can have any combination of these (that's an oversimplification,
but good enough), and all except the first facet are optional. For
that reason, one must retain the facet type (in MARC that means $x vs.
$v or $z, etc.) in order to reconstruct the semantics of the
individual facets.
In subject headings with names you have a name portion and a facet
portion. The facet portion uses subfields vxyz. All of the rest is the
name portion:
$aInternational Congress of Writers for the Defense of Culture$n(1st
:$d1935 :$cParis, France)$vFiction.
=
name: $aInternational Congress of Writers for the Defense of
Culture$n(1st :$d1935 :$cParis, France)
facet: $vFiction
kc
--
Karen Coyle
kcoyle@kcoyle.net http://kcoyle.net
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Received on Tue Nov 03 2009 - 13:26:16 EST