the world wide web: information resource. how a search engine works… how search works - youtube

The World Wide Web:The World Wide Web:Information ResourceInformation Resource

How a Search Engine works…How a Search Engine works…

How Search Works - YouTube

http://youtu.be/BNHR6IQJGZs

Hock, Randolph. Hock, Randolph. The Extreme Searcher’s Internet Handbook. 2The Extreme Searcher’s Internet Handbook. 2ndnd ed. CyberAge ed. CyberAge Books: Medford. (2007).Books: Medford. (2007).

Internet

Worldwide network of networks based on the TCP/IP protocol.

(WWW + Invisible Web)

World Wide Web

Portion of the Internet that uses http to transmit files. Files are typically written in HTML code and viewable using a browser, allowing a hypertext point-and-click navigation of text and incorporation of images and other types of media and formats.

Types of SEARCHINGTypes of SEARCHING

Directories

Yahoo Directory

Search Engines

GoogleYahooAsk.comDogpileClusty

When to use a DIRECTORY?When to use a DIRECTORY?

When you know you need something more specific than what you have.

When BROWSING through topics would help you narrow your focus.

http://dir.yahoo.com/?skw=yahoo+directory

Search for websites with information about “great white sharks.”

DIRECTORIESDIRECTORIES

SelectivityClassificationOnly index the main page of websitesSmall database (compared to WWW)May not include websites that address

very specific topicsSome accept PAID inclusion

Search EnginesSearch Engines

“Programs that accept a user’s query, search a database, and return to the user those records matching the query” (Hock,

280).

Search EnginesSearch Engines

Query – The keyword, term, or phrase typed into the field of a search engine to find a website with information for which you are searching.

Brain storm topics and queries.

http://www.google.com/

DefinitionsDefinitions

InternetWorld Wide WebDirectorySearch EngineQueryBrowserWebsiteURL

InternetInternet

Worldwide network of networks based on the TCP/IP protocol.

World Wide WebWorld Wide Web

Portion of the Internet that uses http to transmit files. Files are typically written in HTML code and viewable using a browser, allowing a hypertext point-and-click navigation of text. Also incorporates images and other types of media and formats.

DirectoryDirectory

“Collection of Web page records classified by subject to allow easy browsing of the collection” (Hock, 277).

Search EngineSearch Engine

“A computer program that retrieves documents or files or data from a database or from a computer network (especially from the Internet).” (Web Search Lesson Plan: Start Your Engines, https://docs.google.com/View?id=dfvwdtqp_51gw7326d7)

QueryQuery

The keyword or phrase typed into the blank field of a search engine to find a website with information for which you are searching.

BrowserBrowser

“A program used to view HTML documents.”

Examples:• Internet Explorer• Safari• Firefox• Netscape

(Web Search Lesson Plan: Start Your Engines, https://docs.google.com/View?id=dfvwdtqp_51gw7326d7)

WebsiteWebsite

“A collection of web pages, a collection of links between pages, programs that do services (such as look up things).”

(Web Search Lesson Plan: Start Your Engines, https://docs.google.com/View?id=dfvwdtqp_51gw7326d7)

URLURL

Uniform Resource Locator. The address where a website is located on the World Wide Web.