lis512 lecture 10 lcsh basics ii
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Thomas Krichel 2010-12-08. LIS512 lecture 10 LCSH basics II . today. Structure and syntax types of headings grammatical forms Subdivisions Relationships between headings. single noun headings. Represent an object or concept CD-ROMsHeat ScootersLove - PowerPoint PPT PresentationTRANSCRIPT
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LIS512 lecture 10
LCSH basics II
Thomas Krichel2010-12-08
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today
• Structure and syntax– types of headings– grammatical forms
• Subdivisions• Relationships between headings
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single noun headings
• Represent an object or conceptCD-ROMs HeatScooters Love
• Adjective or participle noun-equivalentsBlindPoor
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articles• Headings generally don’t use articles that are
in the initial position
Arts not The arts• Articles may be retained for grammatical or
semantic purposes, the inverted form is used.
State, The
Comic, The
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plural vs. singular
• Headings representing objects or classes of people are usually plural
“Pencils”“Physicians”
• Biological species are generally singular, higher levels are plural
“Bald eagle” “Eagles”“Western lily” “Lilies”
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phrase headings
• Phrase heading are used when a single noun cannot represent an object or concept:
“Biological rhythms”“Environmental ethics”
• They may be prepositional phrases:“Figures of speech”“Quality of life”“Adult children of alcoholics”
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multiple concept headings
• Relationships between topics“Church and state”“Mathematics and literature”
• Topics normally treated together“Books and reading”“Nails and spikes”
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multiple concept headings: “as”
• Preposition “as” showing a particular use of an object or form:
“Alcohol as fuel”“Insects as pets”“Biography as a literary form”“Legumes as food”
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classes of persons and occupations
• Preposition “as” “Authors as teachers”“Physicians as musicians”
• Preposition “in”“Women in medicine”“Asian Americans in motion pictures”
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Multiple concept headings: “in”
• Special applications of a concept:“Music in advertising”“Television in education”
• A place within a concept:“Africa in textbooks”“Egypt in the Koran”
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direct vs. indirect forms• Library of Congress Subject Headings
may be in direct form using natural language or in inverted or qualified forms.– Direct form: electric alarms– Indirect form: alarms, electric
• Since 1983 the LCSH prefer the direct form, but there are many indirect forms around.
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Inverted headings
• Used to be more common:Chemistry, OrganicInsurance, Accident
• Current practice: most headings in direct form
• Inverted headings are retained for some categories
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headings, inverted, 2
• Language, nationality or ethnic group qualifiers
“Art, American”“Cookery, Ethiopian”
• Headings qualified by time period“History, Modern”“Philosophy, Ancient”
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headings, inverted 3
• Headings with qualifiers for artistic style“Painting, Romanesque”“Sculpture, Hellenistic”
• Some types of fossils“Sponges, Fossil”“Vertebrates, Fossil”
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headings, inverted 4
• Some music headingsChoruses, Sacred
• BattlesTrebbia River, Battle of, Italy, 1799Gettysburg, Battle of, Gettysburg, Pa.,
1863• Some geographic headings
Mexico, Gulf of
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headings, inverted 5
• Fictitious and legendary characters“Bond, James (Fictitious character)”“Bunyan, Paul (Legendary character)”
• Royal houses“Habsburg, House of”“Windsor, House of”
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qualification of headings
• Parenthetical: discipline or topic“Waste (Economics)”
• Parenthetical: category of object“Plates (Engineering)”“Plates (Tableware)”
• Adjectival:“Chemical bonds”“Nuclear fission”
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Subdivisions in LCSH
• Narrow the scope of a heading• Bring out specific aspects of a subject• Example: a work discussing pre-colonial
Brazil needs more than just the subject heading Brazil
Brazil—History—To 1822 • Subdivisions may themselves be
subdivided
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Topical subdivisions• Limit the concept of a heading to a specific
subtopic• Many represent actions, attributes or aspects• May be specific to a single concept
Helicopters—Flight testingPresley, Elvis, 1935-1977—Sightings
• OR applicable to numerous headings —Psychological aspects —Statistical methods
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Topical subdivisions (cont.)• Sometimes used to bring out parts of the whole
Eye—MusclesSports cars—Axles
• More than one topical subdivision may be used to refine the concept
Fruit—Postharvest lossesFruit—Postharvest losses—Prevention
• Topical subdivisions are coded $x
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Geographic subdivisions
• If a work discusses a topic in regard to a specific location, geographic subdivisions may be used to group together common coverage
Remainders (Bookselling)—Illinois—Chicago• Not all headings may be subdivided
geographically• Geographic subdivisions are coded $z
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Chronological subdivisions• Indicate the time period covered in the work• Usually associated with historical treatment of a
topicPrinting—History—19th centuryRussia—Social conditions—1801-1917
• Used with literary, music, and art headingsGerman literature—18th centurySonatas (Piano)—20th century
• Chronological subdivisions are coded $y
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Form subdivisions• Indicate what an item is rather than what it is
about• The most common form subdivisions may be
used under all types of main headings and subdivisions
—Periodicals—Bibliography
• Form subdivisions are coded $v and are generally the last subdivision in a heading
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Form subdivisions (cont.)
• If a work is about a specific form, the form is treated as a topical subdivision
Science $x Periodicals $v Bibliographyfor a bibliography of science periodicals
• Occasionally, two subdivisions are needed to indicate form
Technology $v Bibliography $v Periodicalsfor a bibliography that is issued as a periodical
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Free-floating vs. established• Some subdivisions can be used with specified
categories of headings whenever appropriate without having been explicitly established with those headings
• Other subdivisions are only to be used in individual cases and must be represented by an authority record permitting the usage Academic libraries—Food and beverage policies Camp sites, facilities, etc.—Reservation systems Moon—Exploration
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Order of subdivisions
Generally, use established headings and follow instructions for combining with free-floating subdivisions, placing form subdivisions last
Two basic orders:• [Place]—[Topic]• [Topic]—[Place]
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[Place]—[Topic]
• Generally used for aspects of a place: its history, politics, economics, civilization
• General order of a subject heading string of this type with all types of subdivisions:
[Place] $x [Topic] $y [Period] $v [Form]
Ireland $x Economic conditions $y 1949- $v Congresses
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[Topic]—[Place]
• Used for topical headings that are authorized for geographic subdivision
• General order of a subject heading string of this type with all possible subdivisions.
• This is recommended order following the Airlie House recommendation of 1991.
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[topic]-[place] examples
[Topic] $z [Place] $x [Topic] $y [Period] $v [Form]
Railroads $z Canada $x History $y 19th century $v Sources
OR[Topic] $x [Topic] $z [Place] $y [Period] $v
[Form]Periodicals $x Publishing $z Italy $x History
$y 19th century $v Bibliography
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Syndetic structure: references
• Equivalence relationships
• Hierarchical relationships
• Associative relationships
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Equivalence or USE/UF references
• Link terms that are not authorized to their preferred forms
• Covered in Subject Headings Manual H 373
• Example:Baby sitting USE Babysitting
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Categories of USE/UF references
• Synonyms and near synonyms Dining establishments USE Restaurants
• Variant spellings Haematology USE Hematology
• Singular/plural variants Salsa (Cookery) USE Salsas (Cookery)
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Categories of USE/UF references (cont.)
• Variant forms of expression Nonbank banks USE Nonbank financial institutions
• Alternate arrangements of terms Dogs--Breeds USE Dog breeds
• Earlier forms of headings Restaurants, lunch rooms, etc. USE Restaurants
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Hierarchical references: broader terms and narrower terms
• They link authorized headings• They build reciprocal relationships • They allow users to enter at any level and
be led to next level of either more specific or more general topics
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Three types of hierarchical references
• Genus/species (or class/class member) Dog breeds Poodles
NT Poodles BT Dog breeds• Whole/part
Foot Toes NT Toes BT Foot
• Instance (or generic topic/proper-named example) Mississippi River Rivers—United States
BT Rivers—United States NT Mississippi River
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Associative or related term references
• These link two headings associated in some manner other than hierarchy
• Currently made between – headings with overlapping meanings
Carpets RT Rugs– headings for a discipline and the focus of that discipline
Ornithology RT Birds– headings for persons and their field of endeavor
Physicians RT Medicine
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Components of entries in LCSH
• Authorized headings• Class numbers• References
– USE, Used For (UF)– Broader Term (BT) & Narrower Term (NT)– Related Term (RT)– General References (SA and USE)
• Scope notes
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References
• Indicate relationships among headings• Listed in groups, by type of reference• Equivalence relationship
– USE and UF (Used for)• Hierarchical relationships
– BT (Broader Term) and NT (Narrower Term) • Associative relationships
– RT (Related Term)• General references
– SA (See Also)
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USE and UF (Used For)
CorrespondenceUSE Letters
LettersUF Correspondence
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Narrower Term (NT)
Biographical sourcesNT Letters
LiteratureNT Letters
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LCSH: on LC Web Site
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how to do it• It remains largely subjective.• The cataloger needs to have an understanding
of the subject matter, and understand the catalog audience too!
• No step-by-step, how-to guide that always works can be constructed.
• For our record that we create we do not require to place a subject heading at all since AACR2 says that subject headings are optional.
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summarization vs. exhaustive • The simplest form of subject headings just
take a summary of the work. • Example
– Title: “Managing the construction process: estimating, scheduling and project control”
– Subject: “Building—Superintendence” • A more conscientious cataloger will add
entries for all aspects of the subject found in the work.
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examples for exhaustive headings• Title: “Daily life on the old colonial frontier”• Headings: “Frontier and pioneer life—North America”
“North America—History—Colonial period, ca. 1600-1775” “Europe—Territorial Expansions—Social Aspects” “North America—Ethnic relations” “Indians of North America—Government relations—to 1789” “Indians of North America—First contact with Europeans” “Fur trade—Social aspects—North America—History” “France—Relations—Great Britain” “Great Britain—Relations—France.
• The book is now on Google books.
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order of headings
• Generally, the LoC tries to coincide the first subject heading with the classification number. This is approximate because there is an imperfect match.
• If there are major topics, they are usually put first. But it is not clear where major topics end and auxiliary topics start.
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sample entry at classificationweb.net
• Ecocriticism (May Subd Geog) • [R S D][PN98.E36] [B L S D]• Here are entered works on criticism of
literature and the arts from an environmental perspective.
• UF “Ecological literary criticism” “Environmental literary criticism”
• BT Criticism
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• R shows the record in Marc format.• D relates it to Dewey Decimal Classification.• All other links related the topic to the Library
of Congress Classification scheme.
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http://openlib.org/home/krichel
Thank you for your attention!
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