METADATA & META TAGS - University of Texas at Austin

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Transcript METADATA & META TAGS - University of Texas at Austin 

METADATA & META TAGS
Presented by
Jong Hun Kim
INF 385E
Information Architecture and Design I
September 28, 2004
What is Metadata?
Data about data
• Information about information
• Kind of information that helps people
find what they are looking for
• Describes a resource
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-What it is
-What it is about
-Where it is
Example Catalog record
Author:
Title:
Publisher:
Item Locn:
Call No:
Status:
Descript:
Subject:
ISBN:
Arnold, Eve.
Marilyn Monroe: An appreciation
New York: Knopf, 1987
Central Quarto
PN2287. M69 A74 1987
AVAILABLE
141 p : ill. (some col.) ;30cm
Monroe, Marilyn, 1926-1962
0394556720
Major Aspects of Metadata
•
Description of resource
-Depend on type of resource and purpose of
metadata
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Production of Metadata
-Summary of the data produced by various
level of intelligence
•
Use of Metadata
-Access and use
Use of Metadata
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To summarize the meaning of the data
To allow users to search for the data
To allow users to determine if the data is what they
want
To prevent some users from accessing data
To instruct how to interpret the data
To give contact information about the data
To control the management of the data
To indicate relationships with other resources
To give the history of data
Dublin Core
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Metadata Standard
To promote and develop the metadata elements
Fifteen ElementsTitle
Author or Creator
Subject and Keywords
Description
Publisher
Other Contributor
Date
Resource type
Format
Resource Identifier
Source
Language
Relation
Coverage
Rights Management
What is Meta Tags?
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Tags to describe various aspects
about a web page
Inform of metadata to be added to
web pages
All meta tags place within the head
section
General Syntax
<META NAME=“dataname” CONTENT=“datavalue”>
An Example of Meta Tags
<head>
<meta name="description" content=“meta tags.">
<meta name="keywords" content="meta data,
metadata, meta tag, meta-tag, search-engine">
<meta name="author" content="Keith Brooke">
<meta name="reply-to" content="kbrooke">
<meta name="robots" content="all">
<title>Meta Tags-Metadata Elements</title>
</head>
Meta Tags to Provide
Information
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Description
<META NAME=“description” CONTENT=“Meta tags.”>
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Author
<META NAME=“author” CONTENT=“Steven Matthiesen”>
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Keywords
<META NAME=“keywords” CONTENT=“a, list, keywords”>
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Robots
<META NAME=“robots” CONTENT=“all”>
All- Robots can index the pages
None- Robots should ignore the page
Noindex-Prevents indexing of a page
Follow-Robots can follow links from this page
Nofollow-Robots cannot follow links from this page
Meta Tags to Control the
Browser
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Expire
<META HTTP-EQUIV=“Expires” CONTENT=“0”>
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Pragma and Cache Control
<META HTTP-EQUIV=“Pragma” CONTENT=“no-cache”>
<META HTTP-EQUIV=“Cache-Control” CONTENT=“no-cache”>
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Refresh
<META HTTP-EQUIV=“Refresh”
CONTENT=“10;URL=http://www.rit.edu”>
The use and promotion of metadata
can improve the effectiveness of
information retrieval
References
DC. Dublin Core Metadata Set Home Page,
http://purl.org/metadata/dublin_core, 1997
W3C World Wide Web Consortium
http://www.w3.org/
The IFLA Metadata Resources page
http://www.ifla.org/ll/metadata.html
Meta tags can index, organize your Web pages
http://www8.zdnet.com/pcweek/ir/0113/13jia.html
Knight, Jon & Hamilton, Martin. Dublin Core Qualifiers,
http://www.roads.lut.ac.uk/Metadata/DCSubElements.html, 1997
Danny Sullivan How To Use HTML Meta Tags
http://searchenginewatch.com/webmasters/article.php/2167931
December 5, 2002
Metadata and Search engines, The University of New England
http://www.une.edu.au/uneweb/guidelines/metadata.htm