4.3. Subject and Keywords
Label: Subject
Element Description: The topic of the resource. Typically, subject
will be expressed as keywords or phrases that describe the subject or
content of the resource. The use of controlled vocabularies and formal
classification schemes is encouraged.
Guidelines for creation of content:
Select subject keywords from either the Title or Description information.
If the subject of the item is a person or an organization, use the same
form of the name as you would if the person or organization were a Creator,
but do not repeat the name in the Creator element.
In general, choose the most significant and unique words for keywords,
avoiding those too general to describe a particular item.
This element might well include classification data (for example, Library
of Congress Classification Numbers or Dewey Decimal numbers) or controlled
vocabularies (such as Medical Subject Headings or Art and Architecture
Thesaurus descriptors) as well.
Examples
<META NAME="DC.Subject" CONTENT="Aircraft leasing and renting">
Subject="Dogs"
Subject="Olympic skiing"
Subject="Street, Picabo"
Qualifiers for DC.Subject
From LC
Scheme:
(Unqualified: Keyword is default)
LCSH (Library of Congress Subject Headings)
MeSH (Medical Subject Headings
AAT (Art and Architechture Thesaurus)
LCNAF (Library of Congress Name Authority File): for names used as subjects
DDC (Dewey Decimal Classification)
LCC (Library of Congress Classification)
NLM (National Library of Medicine Classification)
UDC (Universal Decimal Classification
Type: Not necessary
From UK
Scheme:
Internal
The information provided is not part of an external coding system and the coding should be qualified by an accompanying TYPE from the list below. This is the default scheme value if the scheme is not explicitly stated.
LCSH
Library of Congress Subject Heading.
UDC
Universal Decimal Classification.
DDC
Dewey Decimal Classification.
NLM
National Library of Medicine.
MeSH
Medical Subject Headings.
Colon
JEL
Journal of Economic Literature Classification
RCHME
RCHME/English Heritage Thesaurus (ISBN 1-873592-20-5)
AAT
Art & Architecture Thesaurus
ULAN
Union List of Artist's Names
TGN
Thesaurus of Geographic Names
ICONCLASS
SHIC2
Social History & Industrial Classification
TGM1
LC Thesaurus for Graphic Materials I: Subject Terms
MSC
Mathematical Science Classification
YKL
Finnish Public Library Classification
SAB
Swedish Library Classification
Type
Keyword
A simple, unconstrained list of comma separated keywords and/or keyphrases. This is the default type value if the type is not explicitly stated.
Notes
Miscellaneous notes about the resource, such as revision histories.
|