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Lcsh

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Information about Lcsh

Published on November 20, 2008

Author: mkwalsh55

Source: slideshare.net

Description

Library Congress Subject Headings
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Library of Congress Subject Headings (LCSH) Maura Walsh Adeleine Whitman Jessica Wilson Tania Wisotzke Erin Wolfe

Library of Congress (LC) De facto National Library Began as Legislative Library in 1800 Collections totaling more than 100 million items Librarian of Congress appointed by President (now James H. Billington) Serves as: research library for Congress US copyright center Library for all three branches of government Largest public library Materials in over 450 languages

De facto National Library

Began as Legislative Library in 1800

Collections totaling more than 100 million items

Librarian of Congress appointed by President (now James H. Billington)

Serves as:

research library for Congress

US copyright center

Library for all three branches of government

Largest public library

Materials in over 450 languages

LC Jefferson Building

History of LCSH Timeline 1897 – LC moves to new Thomas Jefferson Building 1898 – LC introduces dictionary catalog; first subject headings from ALA list 1902 – LC begins Card Distribution Service

1897 – LC moves to new Thomas Jefferson Building

1898 – LC introduces dictionary catalog; first subject headings from ALA list

1902 – LC begins Card Distribution Service

LCSH Timeline 1909 to 1914 – LC publishes Subject Headings Used in the Dictionary Catalogues of the Library of Congress 1975 – 8 th edition (2 volumes) published under title Library of Congress Headings

1909 to 1914 – LC publishes Subject Headings Used in the Dictionary Catalogues of the Library of Congress

1975 – 8 th edition (2 volumes) published under title Library of Congress Headings

LCSH Timeline 1992 – Subject Authority Control Program (SACO) established 1998 – LCSH ’s 100 th Anniversary http://www.loc.gov/loc/lcib/9808/lcsh-cel.html 2007 – 30 th edition of LCSH published; 5 volumes contain over 280,000 subject headings

1992 – Subject Authority Control Program (SACO) established

1998 – LCSH ’s 100 th Anniversary http://www.loc.gov/loc/lcib/9808/lcsh-cel.html

2007 – 30 th edition of LCSH published; 5 volumes contain over 280,000 subject headings

LCSH - The Big Red Books

What is the LCSH? Controlled vocabulary access points to bibliographic records standardized records for libraries and databases the most widely used subject access system in the world

Controlled vocabulary

access points to bibliographic records

standardized records for libraries and databases

the most widely used subject access system in the world

What is the LCSH? (cont) A tool to facilitate finding similar items Concise, precise, and specific Answers the question: “What is this item about?”

A tool to facilitate finding similar items

Concise, precise, and specific

Answers the question:

“What is this item about?”

A stairway in the Great Hall of the Library of Congress, Thomas Jefferson Building

Who and Why? Libraries standardization Catalogers and Indexers Categorization of materials Researchers all materials on a topic (BT, NT, UF) Patrons way to search (cross-referencing)

Libraries

standardization

Catalogers and Indexers

Categorization of materials

Researchers

all materials on a topic (BT, NT, UF)

Patrons

way to search (cross-referencing)

LCSH Construction Provides three relational directions between terms (thesaurus format): Equivalence (USE/UF) Hierarchical (BT, NT) Associative (RT, SA)

Provides three relational directions between terms (thesaurus format):

Equivalence (USE/UF)

Hierarchical (BT, NT)

Associative (RT, SA)

LCSH Construction (cont) Main heading topical form or genre names personal, corporate, geographic

Main heading

topical

form or genre

names

personal, corporate, geographic

LCSH Construction (cont) Subdivisions topical form or document type chronological geographical

Subdivisions

topical

form or document type

chronological

geographical

LCSH Construction (cont) Free-floating subdivisions Pattern headings

Free-floating subdivisions

Pattern headings

LCSH Construction (cont) Syntax and form can vary greatly Highly ordered and precise, but... User vs. consistency principles Stability principle

Syntax and form can vary greatly

Highly ordered and precise, but...

User vs. consistency principles

Stability principle

Inside the Library

Issues Difficult to locate information No natural-language searches No browsing Slow to add/change headings Adaptability/Flexibility Bias reflected in headings

Difficult to locate information

No natural-language searches

No browsing

Slow to add/change headings

Adaptability/Flexibility

Bias reflected in headings

LCSH Bias Cutter's Rules Literary Warrant National and international reinforcement of U.S. Status quo Gender/Culture/…

Cutter's Rules

Literary Warrant

National and international reinforcement of U.S. Status quo

Gender/Culture/…

Library of Congress Reading Room

LCSH as Thesaurus Definition of thesaurus a list of words or group of words that can be used as subject headings or descriptors in a particular database, catalog, or index. … Controversy over hierarchy …

Definition of thesaurus

a list of words or group of words that can be used as subject headings or descriptors in a particular database, catalog, or index. …

Controversy over hierarchy



LCSH across languages

LCSH Across Languages LCSH becoming internationalized Positive implications -global access -multilingual access Negative implications -English centric -Underrepresentation -SHs lacking equivilancy

LCSH becoming internationalized

Positive implications

-global access

-multilingual access

Negative implications

-English centric

-Underrepresentation

-SHs lacking equivilancy

LCSH in Online Catalogs Progress Adeleine, can you fill this in?

Future of LCSH? Possibilities Social collaboration Tagging/folksonomies (PennTags) Combination LCSH Wiki use in libraries (Ohio U. library) Natural language processing Ontologies Faceted Navigation

Possibilities

Social collaboration

Tagging/folksonomies (PennTags)

Combination LCSH

Wiki use in libraries (Ohio U. library)

Natural language processing

Ontologies

Faceted Navigation

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