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Internet Research Strategies

Internet Research Strategies. What is the Internet ? International Network of Computers Universities Government Business Organizations Individuals Information ranges from highly informative to absolute junk. What is a Search Engine?

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Internet Research Strategies

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  1. Internet Research Strategies

  2. What is the Internet ? • International Network of Computers • Universities • Government • Business • Organizations • Individuals • Information ranges from highly informative to absolute junk.

  3. What is a Search Engine? • Software that indexes and catalogs the Internet into a database • Computer generated databases • Databases created by people • Lists provide short descriptions

  4. Two Ways to Conduct a Search • Directory searching • Uses links to follow a subject stream. • Example: Education->Teaching->Curriculum • Keyword searching • Use words or phrases to identify what your looking for. • Use “key functions” to clarify search. • Example: lessons or units

  5. Types of Search Engines • Subject Directories • Web Search Engines • Specialized Search Engines • Meta Search Engines

  6. What is a Subject Directories? • Database organized by subjects • Offer expert help upon selected topics. • Many, founded on the basis for a need to provide a “safe” searching environment. • Editorial staff evaluates and selects sites • Use key word or subject stream searching

  7. When to use a Subject Directory • Searches based upon rough, vague, uninformed ideas • Locating a wide range of information on a specific topic

  8. Examples of Subject Directories • About.com http://about.com • Lycos Sites by Subject http://www.lycos.com/default.asp • The Open Directory Project http://dmoz.org • The WWW Virtual Library http://www.vlib.org • Argus Clearinghouse http://www.clearinghouse.net • Magellan Internet Guide http://magellan.excite.com • Yahoo! http://www.yahoo.com

  9. Activity #1 Using a Subject Directory

  10. What is a Web Search Engine? • Full-text indexes of “the entire web” • Many search engines also offer a subject directory.

  11. When to Use a Web Search Engines • When you want all pages that mention a subject, phrase, or word.

  12. Examples of Web Search Engines • All the Web, All the Time http://www.alltheweb.com • Alta Vista http://www.altavista.com • Ask Jeeves http://www.askjeeves.com • Ask Jeeves for Kids http://www.ajkids.com • Ask Jeeves for Teachers http://www.ajkids.com • Go.Com http://www.go.com/dynamic/Portal • GoTo.Com http://www.goto.com • Excite http://www.excite.com

  13. Activity #2 Using a Web Search Engine

  14. What is a Specialized Search Engine? • Databases contain information specific to one topic • Databases may be full-text or site specific  

  15. When to Use a Specialized Search Engine • When you only want to find resources that apply to a particular subject.

  16. Examples of Specialized Search Engines • Ask Eric Ask ERIC • Switchboard http://www.switchboard.com • Shareware.com http://shareware.cnet.com • EduHound (education) http://www.eduhound.com • Yahooligans (for kids) http://www.yahooligans.com • Internet Public Library http://ipl.sils.umich.edu/ref • EducationPlanet.com http://www.educationplanet.com • GoGraph.com http://www.gograph.com

  17. Activity #3 Using a Specialized Search Engine

  18. What is a Meta-Search Engine? • Submit query to multiple, full-text search engines • Query results from all search engines is compiled into one list

  19. When to Use a Meta Search Engine • With keywords that are extremely hard-to-find • Locating a large number of related sites

  20. Examples of Meta-Search Engines • Dogpile (Uses 11 different engines) http://www.dogpile.com • Metacrawler: (Uses 10 major engines) http://www.metacrawler.com • ProFusion: (Uses 9 engines) http://www.profusion.com • SavvySearch: (combines web engines with other search tools) http://www.search.com • All in One Search Page http://www.allonesearch.com • Four in One Search Engine (simultaneously searches Yahoo!, Alta Vista, Lycos & Web Crawler) http://www.all4one.com • EZ-Find at The River (searches one of 15 engines at a time) http://info.theriver.com/TheRiver/ezfind.htm

  21. Activity #4Using a Meta Search Engine

  22. Activity #5 Selecting the Appropriate Search Tool (It’s A Race!)

  23. Internet Searching: Tips and Tricks • Key functions ( + , - , “ “ , * ) • Boolean Operators (and, or, not) • Keyword functions (anchor: , domain: , host: , image; , like; , title; , text; , url; , )

  24. Boolean Operators • Use “and” to find sites that contain all words entered into query • Example: lessons and units • Use “or” to find sites that contain at least one of the listed words. • Example: lessons or units • Use “not” to exclude a word or phrase from the sites your query pulls up. • Example: Cleveland not Indians • Most major engines *except* Google, Infoseek, and Yahoo support

  25. Activity #6 Using Boolean Operators

  26. Key Functions • Including (+) and Excluding (-) • + before a word, indicates that you want the word included in search results. • Example: +lesson plans • - before a word, indicates that you do not want the word included in search results. • Example: Cleveland –Indians • Most search engines allow you to precede a word with + to include or - to exclude

  27. Activity #7 Using the Including and Excluding Key Functions

  28. Phrase Searching ( “ ” ) • Placing a phrase in quotes will locate sites that contain the phrase • Example : “math lesson plans” • Most search engines allow you to specify phrases by including terms in quotes

  29. Activity #8 Using Key Functions to Conduct a Phrase Search

  30. Wildcards ( * ) • Use to locate multiple forms of a word •  Example: learn* • AltaVista, HotBot, and Northern Light support use of * as a wildcard. • Yahoo automatically looks for your search term as a part of words

  31. Activity #9 Using Truncations and Wildcards

  32. Keyword Functions • Anchor: Finds pages that contain the specified word or phrase in the text of a hyperlink. • Domain: Finds pages within the specified domain • Host: Finds pages with specified host name • Image: Finds pages with images having the specified file name • Like: Finds pages similar to or related to the specified URL • Text: Finds all pages containing the specified word or phrase • Title: Finds pages that contain the specified word or phrase in the page title • URL: Finds pages with a specific word or phrase in the URL

  33. Activity #10 Using keyword functions

  34. Evaluating Web Sites • Caution • Evaluate Web sites by analyzing: • Authority • Content • Currency

  35. Activity #11 Evaluating Web Sites

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