Publishing on the WWW Search Engines & Metadata. Aims and Objectives To identify and discuss the different types of search engine Understand the basic.

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Presentation transcript:

Publishing on the WWW Search Engines & Metadata

Aims and Objectives To identify and discuss the different types of search engine Understand the basic construction of a search engine Understand how search engines work Understand what meta tags are

Types of Search Engine Directories / Subject index Search engines Hybrid search engines Specialised search engines

Anatomy of a Search Engine A search engine consists of three components: Spiders Index The search engine

How Search Engines Work There are two main method used for searching: Keyword searching Concept based searching

Searching Strategies Natural language Operators Boolean operators

Metadata What is metadata Why is it important: Easier to locate information Easier to tell if you have found what your looking for Encourages information management There are two ways of using metadata Tags Dublin core

Disadvantages of Metadata Could lead to large amounts of extra code in the HTML file May increase download time Subject to abuse To add metadata to a web page involves extra work

An Example of Meta Tags

An Example of Dublin Core Ariadne Magazine <META NAME="DC.title" CONTENT="Ariadne: A Web magazine on Internet issues for librarians and information specialists"> <META NAME="DC.subject" CONTENT="Ariadne, newsletter, journal, e-zine, e-journal, magazine, elib, electronic libraries, digital libraries, networking, libraries, librarians, Web, IT, higher education, reviews, news, features, interviews, UKOLN, controversy, debate, electronic libraries programme, JISC, information science, Open Archives Initiative, e-prints"> <META NAME="DC.description" CONTENT=" The UK Office for Library and Information Networking (UKOLN) publishes a newsletter in electronic format for use over the World Wide Web. The newsletter is aimed initially at subject librarians and other working librarians in academic libraries, though many people in the global Higher Education and LIS communities will find items of interest within it"> <META NAME="keywords" CONTENT="Ariadne, newsletter, journal, e-zine, e-journal, magazine, elib, electronic libraries, digital libraries, networking, libraries, librarians, Web, IT, higher education, reviews, news, features, interviews, UKOLN, controversy, debate, electronic libraries programme, JISC, information science, Open Archives Initiative, e-prints"> <META NAME="description" CONTENT="The UK Office for Library and Information Networking (UKOLN) publishes a newsletter in electronic format for use over the World Wide Web. The newsletter is aimed initially at subject librarians and other working librarians in academic libraries, though many people in the global Higher Education and LIS communities will find items of interest within it.">

Dublin Core 15 Element Set

Metadata Resources Articles on Metadata Dublin Core Metadata