FRBR information exchange Thomas Hickey & Jenny Toves OCLC Research

Current FRBR information exchange  Sets of MARC-21 records Both bibliographic and authority Sometimes extended  pKeys  Unique pKeys  Lists of sets of control numbers  xISBN web service  superWork records

Some background  Our FRBRization has been done primarily at the work level We have FRBRized OCLC WorldCat ~60,000,000 records ~1,000,000,000 holdings Used in Open WorldCat, FictionFinder now Will be visible in FirstSearch displays this fall Norwegian BIBSYS records Finish national bibliography (now in WorldCat) Electronic thesis metadata  Processing done on a 24-node Beowulf Linux cluster

MARC 21 bibliographic data  Basic method of accepting information  Other formats get mapped into it  Fields we use: Author main entry Titles ISBN Personal name added entries Language  Extensions BIBSYS use of 490 fields to indicate hierarchy

MARC 21 Authority data  Map personal names using cross references  Map author-titles using cross references  Fields we currently use 008 fixed field 100, 130, 400  Extensions Files of additional cross references Common title patterns xISBN matching

pKeys  An author-title key for matching  Derived from MARC-like records & authority data ocm shakespeare, william\ /hamlet ocm /hamlet/shakespeare, william\ ocm hamlet motion picture 1948 ocm /hamlet/ocm

Unique pKeys  pKeys that have been sorted and counted 692 sw milton, john\ /poems 691 sw puccini, giacomo\ /tosca 690 sw chaucer, geoffrey\d 1400/canterbury tales 688 sw melville, herman\ /moby dick 682 sw china/laws etc

Lists of control numbers  sw  sw  sw  sw  sw  sw

xISBN web service  Takes an ISBN as input  Returns list of ISBNs in associated work  Significant processing Starts with control-number list of work-sets Uses ISBNs to pull work-sets together Allows fuzzy-matching on author/title Ends up with consistent clusters In general larger than those in control-number list

xISBN examples [ , ]: sw barnea, amir/agency problems and financial contracting sw barnea, amir/agency problems on financial contracting [ x, , , , ]: x sw /collins new school dictionary/ocm sw /collins new school dictionary/ocm sw /collins new school dictionary/ocm

xISBN XML response   - -  x     

superWorks format  Developed for FictionFinderFictionFinder  XML format  Includes expression-level information All the information needed  We are adapting it to the Curioser projectCurioser

superWork record layout  pKey  # manifestations, holdings, sw-id, control #s  publication dates  expressions expression classes language authors titles subjects components author, title, publication data

Summary  Simpler when only work-level relationships are needed  Even for work-level relationships, a number of different formats are useful  Information needed for an interface gets much more complicated