METADATA & META TAGS Presented by Jong Hun Kim September 28, 2004
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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 • -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 • Production of Metadata -Summary of the data produced by various level of intelligence • Use of Metadata -Access and use Use of Metadata • • • • • • • • • 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 • • • 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? • • • • 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 • Description <META NAME=“description” CONTENT=“Meta tags.”> • Author <META NAME=“author” CONTENT=“Steven Matthiesen”> • Keywords <META NAME=“keywords” CONTENT=“a, list, keywords”> • 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 • Expire <META HTTP-EQUIV=“Expires” CONTENT=“0”> • Pragma and Cache Control <META HTTP-EQUIV=“Pragma” CONTENT=“no-cache”> <META HTTP-EQUIV=“Cache-Control” CONTENT=“no-cache”> • 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
