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V irtual I nternational A uthority F ile. ALA, June 2006. Virtual International Authority File. Link authority records from national bibliographic agencies Build on their authority work Expand the concept of universal bibliographic control

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virtual international authority file
Virtual International Authority File
  • Link authority records from national bibliographic agencies
  • Build on their authority work
  • Expand the concept of universal bibliographic control
    • Allow national or regional variations in authorized form to co-exist
    • Support needs for variations in preferred language, script, and spelling
semantic web building blocks

Other controlled

vocabularies

A&I

controlled

vocabularies

(Library) authorityfiles

“Ontologies”

End-user

Semantic Web Building Blocks
project goal
Project Goal

Demonstrate feasibility of linking personal names across:

  • Personennormadatei (PND)
  • Library of Congress Name Authority File (LCNAF)
what is the viaf
What is the VIAF?
  • System
    • Links between files
    • Web browser access
    • Multi-lingual and multi-scripts
  • Maintenance
    • National agencies control their records
    • Records harvested from national systems
  • Scalable
    • Any number of national authority files
matching variations
Matching Variations

In the LCNAF and PND authority files:

  • Same name, same person
  • Same name, different people
  • Different names, same person
  • Missing person in one file
two different people one name

Different

Same Name

People

Two Different People – One Name

Adams, Mike

  • PND: a golfer
  • LCNAF: author of a Beatles collector's guide
one person two names

Different

Same Person

Names

One Person – Two Names
  • LCNAF: Morel, Pierre
  • PND: Morellus, Petrus
enhancing the authorities

Bibliographic

Record

Enhanced

Authority

Derived

Authority

Authority

Record

Enhancing the Authorities
mining the bibliographic record

Usage

Language

LC Control Number

LC Classification

Title

Publisher

Place of Publication

Date of

Publication

Material Type

Authors

Mining the Bibliographic Record

LDR 00826ccm 2200289 a 4500

1 ocm10025532

5 20031229650847.0

8 840627s1982 nyuuua n eng

10 $a 84758340

40 $a DLC $c DLC

19 $a 17706440

20 $c $2.95

28 22 $a 48418 $b G. Schirmer

45 2 $b d198006 $b d198007

48 $b va01 $b ve01 $a ka01

50 00 $a M1529.3 $b .T

100 1 $a Thomson, Virgil, $d 1896-

245 14 $a The cat : $b duet for soprano and baritone / $c

Virgil Thomson ; [words by Jack Larson].

260 $a New York : $b G. Schirmer, $c c1982.

300 $a 1 score (11 p.) ; $c 31 cm.

500 $a For soprano, baritone, and piano.

650 0 $a Vocal duets with piano.

600 10 $a Larson, Jack $x Musical settings.

700 1 $a Larson, Jack.

derived authority record

All text is normalized

Subjects are grouped into

broad subject areas

Coauthor

Publication date is by decade

Material type is coded

Derived Authority Record

00525nz 2200229n 4500

0 1 xlc 1

1 3 OCoLC

2 5 20040721111415.0

3 8 040721nneanz||abbn n and d

4 40 $a OCoLC $b eng $c OCoLC $f viaf

5 100 1 $a Larson, Jack.

6 903 $a 84758340

7 910 14 $a the cat $b duet for soprano and baritone

8 921 $a g schirmer

9 922 $a nyu

10 930 $a jack larson

11 940 $a eng

12 942 $a 234

13 943 $a 198x

14 944 $a cm

15 950 1 $a thomson, virgil $d 1896

strong matching attributes
Strong Matching Attributes
  • A work (title) in common
  • Common control numbers (ISBN, ISSN, or LCCN)
  • Exact birth and death year
  • Joint authors
  • Name as subject
weaker attributes
Weaker Attributes
  • Only one of birth/death date(s) (allows some variation)
  • Subject area of works (two levels)
  • Format (books, films, musical scores, etc.)
  • Language
  • Publisher
  • Partial title match
  • Date of publication
  • Country
  • Role (author, illustrator, composer, etc.)
  • Format (books, films, musical scores, etc.)
slide16

Exact name match with dates

Standard Number

Corporate name

Joint aughor

Language

Publisher

Subject

Decade

Role

Exact title match

lc names
LC Names

Established Names

4,187,973

Names from Bib Records

3,440,706

Active

Established

Names

2,556,824

Uncontrolled

Names

883,882

Orphaned

Names

1,631,149

ddb names
DDB Names

Established Names

2,659,276

Names from Bib Records

2,319,829

Active

Established

Names

2,013,618

Uncontrolled

(Undif’d)

Names

306,211

Orphaned

Names

645,658

results
Results
  • Matches 558,618
  • Complex Matches 70,797
  • Unique Matches 487,821
viaf file
VIAF File

LC Names

4,187,973

DDB Names

2,659,276

Common

558,618

(70% of potential)

next steps
Next Steps
  • Move to incremental updates
  • Start harvesting national files
  • Bring up Web interface (to full files)
  • Make OAI accessible
  • Bring in new participants
  • Handle non-Roman matching
  • Move to other types of authorities
    • Corporate names
    • Geographic names
stage 3 build oai server
Stage 3: Build OAI Server

OAI

Server(s)

LCNAF

DDB/PND

stage 5 build end user interface with unicode displays
Stage 5: Build End User Interface with Unicode displays

User’s cookie specifies Hangul is preferred.

Display 700 form, building on local system’s authority structure

thank you

Thank you

T. Hickey

http://errol.oclc.org/laf/n82-54463.html

ALA June 2006