Transcript ppt - Marcia Lei Zeng

Metadata Descriptions
records
descriptions
statements
The term “metadata” is used differently
in different communities
• Some use it to refer to
– machine understandable
information;
• Some use it only for
– records that describe
electronic resources.
records
descriptions
statements
metadata “records”
• Metadata records have
been seen as the basic
units of management
and exchange.
• A metadata record uses
metadata elements to
describe something,
e.g., a Web site, an
image, a person, or a
technical report.
records
descriptions
statements
-- (1) Internal storage
• A metadata record may be stored in the
same file as the resource, e.g.:
– Web pages
– WORD files
– PDF files
– Image files
–……
Metadata embedded in a Webpage's Head Section
View
 source
Source: marciazeng.slis.kent.edu/metadatabasics/Portuguese/cover.htm
Metadata embedded in a WORD file File  Properties
Metadata embedded in a PDF file
Description
metadata
XMP= eXtensible Metadata Platform
-- Adobe’s cross-products metadata framework
Metadata embedded in a PDF file (2)
Multiple
output
format
Integrated metadata:
descriptive, administrative,
and technical metadata
Metadata embedded in an image file
Photoshop provides
multiple templates: for photo,
video, audio, Mobil SWF,
and even medical images
(DICOM)
Adobe Bridge
provides adjustable
metadata templates
ID3 tags for audio files
Internal layout
of an ID3v2
tagged file.
Homepage:
http://www.id3.org/Home
Complete list of frames:
http://www.id3.org/Frames
A metadata record for a song in iTunes
A metadata record for an online video
as shown in iTunes
-- (2) External storage
• A common method for large collections where
metadata records are usually stored separately
from the resource(s) they describe (whether
these resources are available in electronic
format or not).
• A relational database management system (or
simpler file system) can be implemented in order
to store the records.
The Cleveland Memory Project
The Cleveland Memory Project, Cleveland State University Library:
www.clevelandmemory.org/disasters/.
metadata
record
-display
view
Input data values and create records
Metadata record
created with
CONTENTdm
software
Manage metadata
fields, set them as
searchable , viewable,
or use controlled
vocabulary
XML editor -- Oxygen
XML editor -- Oxygen
Think Differently:
Three Descriptions in a Record
Record
Description B
Description A
Title
record
s
descriptions
statements
Collected Works of
William Shakespeare
Collection
Antony and Cleopatra
1606
Title
Date
isPartOf
Description C William Shakespeare
Name
Play
Subject
Roman history
createdBy
Playwright
Birthplace
Stratford
(3) Metadata statements embedded in Web
pages
http://dev.iptc.org/rNews-10-Introduction-to-rNews
Using RDFa
format to
encode:
<articleURI> rdf:type rnews:Article
<articleURI> rnews:about <thingURI>
Slide from: http://www.iskouk.org/conf2013/slides/TarlingSlides.ppt
Using HTML5 Microdata to encode:
Original source code:
<div>
<h1>Metadata Basics</h1>
<span>Creator: Marcia L. Zeng</span>
<span>Tutorial</span>
<a href="../index.htm ">Table Of Content</a>
</div>
Adding markup with semantically useful microdata (seeing in boldface):
<div itemscope itemtype ="http://schema.org/CreativeWork/WebPage">
<h1 itemprop="name">Metadata</h1>
<div itemprop="author" itemscope itemtype="http://schema.org/Person">
<span> Creator: <span itemprop="author">Marcia L. Zeng</span></span>
</div>
<span itemprop="genre">Tutorial</span>
<a href="../index.html" itemprop="mainContentOfPage"> Table Of Content </a>
</div>