1. A Focused Analysis of MARC Records in HathiTrust
Records become statements
HTRC currently uses solr Indexing
Statements take a key=> value form
title => Emma
Alternatives being explored include RDF triplestore
Processing makes assumptions about what information is where.
Colleen Fallaw
Sarah Yarrito
Erik Radio
MJ Han
Tim Cole

2. Clear, rich, accurate description
Scholar Needs
Workset
Clear, rich, accurate description
Compound queries
Matching

3. Concerns Found Ambiguous
Current vs. original language not consistently distinguished for translated works
Ambiguous
Concepts such as geographical coverage information spread through multiple fields
Distributed
Punctuation and formatting vary for author, title, publisher, and date fields relied on for matching
Inconsistent

4. Information Control Fields Descriptive Fields Language
008 Positions 35-37
041 $a
Date of Publication
008 Positions 07-10, 11-14
260/264 $c
Place of Publication
008 Positions 15-17
260/264 $a
Geographic Coverage
n/a
651 $a, 650 $z, 043 $a
651 $a(18%)
650 $z(25%)
043 $a(25%) x 6% 7% 3% 2%
12% 5%
60%
*651 $a (Subject Added Entry)
Topical Term/Topical term or geographic name entity element
*650 $z: (Subject Added Entry)
Geographic name/geographic subdivision
*043 $a (Geographic Area Code)
Geographic area code

5. Implications
Link
Enhance
Correct