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FAST Subject Element Help
Definition
Subject terms or phrases representing the primary topic(s) on which a work is focused.1
Faceted Application of Subject Terminology (FAST) is a controlled vocabulary with origins in the Library of Congress Subject Headings (LCSH) authority records. FAST breaks the longer related LCSH terms into individual terms in an attempt to create a set of subject terms which are easier to apply and use. 3
Currently the FAST authority file contains over 1,600,000 authority records. The FAST database is available at http://fast.oclc.org.
FAST subject terms are still asssigned to a major category of terms (similar to other subjects) which includes Genre, Geographic, Occupational, Temporal, and Topical.
Form Element
The online form element appears as below:
This form element allows quicks entry by a user of a single FAST term and assign the term type ( i.e., Genre, Geographic, Occupational, Temporal, or Topical). The authority of FAST is automatically applied to the subject term.
Other form elements for entering these subject information includes Full Subject and Subject / Scheme Metadata Entry.
Best Practices
The best practice for entering ...
Examples
The following are examples of well formatted :...
SobekCM / MODS Encoding
This data is encoded entirely in the MODS section of the SobekCM METS file.
<mods:subject authority="fast">
<mods:topic>Pets and travel</mods:topic>
</mods:subject>
<mods:subject ID="SUBJ651_1" authority="lcsh">
<mods:geographic>Atlantic Coast (Guinea)</mods:geographic>
<mods:genre>Maps</mods:genre>
</mods:subject>
<mods:subject ID="SUBJ651_2" authority="lcsh">
<mods:geographic>Atlantic Coast (Sierra Leone)</mods:geographic>
<mods:genre>Maps</mods:genre>
</mods:subject>
<mods:subject ID="SUBJ691_3" authority="local">
<mods:topic>Maps</mods:topic>
<mods:geographic>Atlantic Coast (Guinea)</mods:geographic>
<mods:temporal>1732</mods:temporal>
</mods:subject>
<mods:subject ID="SUBJ691_4" authority="local">
<mods:topic>Maps</mods:topic>
<mods:geographic>Atlantic Coast (Sierra Leone)</mods:geographic>
<mods:temporal>1732</mods:temporal>
</mods:subject>
<mods:subject authority="lcsh">
<mods:name>
<mods:namePart>Garcia Lorca, Federico</mods:namePart>
<mods:namePart type="date">1898-1936</mods:namePart>
</mods:name>
</mods:subject>
<mods:subject authority="naf">
<mods:titleInfo type="uniform">
<mods:title>Missale Carnotense</mods:title>
</mods:titleInfo>
</mods:subject>
Metadata Mapping
MARC to MODS Mapping
The subject keyword terms can be found in various MARC fields in the 6xx fields. Many of these are set up very similarly and allow access to many of the subelements through the MARC subfields. However, which subfield maps into which subelements varies by the MARC field. The table below shows this mapping:
| MARC Field | → Topical | → Geographic | → Temporal | → Genre | → Occupation | → Source |
|---|---|---|---|---|---|---|
| 648 | |x | |z | |a, |y | |v | |2, indicators | |
| 650 | |a, |x | |z | |y | |v | |2, indicators | |
| 651 | |x | |a, |z | |y | |v | |2, indicators | |
| 653 | |a | |2 | ||||
| 654 | |a, |v | |y | |z | |2, indicators | ||
| 655 | |x | |z | |y | |a, |v | |2, indicators | |
| 656 | <|x/td> | |z | |y | |v | |a | |2, indicators |
| 657 | |a, |x | |z | |y | |v | |2, indicators | |
| 690 | |a, |x | |z | |y | |v | |2, indicators | |
| 691 | |x | |a, |z | |y | |v | |2, indicators |
The second character in the indicator (in all cases except 653) indicate the authority as well:
- 0 → lcsh
- 1 → lcshac
- 2 → mesh
- 3 → nal
- 5 → csh
- 6 → rvm
- 9 → local
Finally, the originating MARC tag is placed in the ID for the XML node holding the subject. This is done to simplify the mapping back into MARC.
The name as subject maps from the 600, 610, and 611.
The title as subject maps from the 630.
MODS to MARC Mapping
Mapping from the MODS back to MARC is the reverse of the procedure listed above.
The process for determining the MARC tag to map into is:
- If there is an occupation field, this maps into 656
- If a MARC tag is found in the ID of the XML node, that is used
- If the only terms are temporal, this is mapped into a 648
- If the only terms are genres, this is mapped into a 655
- If the only terms are geographics, this is mapped into a 651
- Otherwise, the 650 tag is used.
Once the field is determined, mapping is the reverse of the procedure above. For example, with a 650 field, the first topical term maps into the |a subfield and the remaining topical terms map into |x subfields. Geographic terms map into the |z subfields, temporal terms to the |y subfield, and genre/form to the |v subfield.
Sources
- MODS User Guidelines Version 3, Detailed Description of MODS Elements
- MARC 21 Format for Bibliographic Data
- FAST (Faceted Application of Subject Terminology) at OCLC