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Uploaded by: CarAutoDriver                  Search Engine Strategies              . . . Beyond Yahoo and Google           ...
Today’s Agenda               Web Structure, Jargon & definitions.               How search engines think and work.        ...
Glossary               blogging          Metasearch               browser           Invisible Web               cache     ...
What is the World Wide Web?                    The World Wide Web                      (WWW) is a global                  ...
The Web is Growing Exponentially     Over 10% of     World is     connected!     Internet users     estimated to     be 60...
3 Main Types of Search Tools:...               Web Directory - Hierarchical -               organized in a classification ...
Expert Pages               Infomine - Scholarly Internet Resource                 Collection http://infomine.ucr.edu/     ...
Now Web search tools can ...               Search multiple search engines               simultaneously.               Find...
Metasearch engines               Search simultaneously across               multiple search engines and               disp...
Natural Language Search               Type your questions in Natural               Language, e.g., AskJeeves.com          ...
Part 2How SearchEngines Think                Search                Enginesand Work
Most search engines and                databases use Boolean               Operators to create search                     ...
Boolean OperatorsAND requires both terms toappear in the items that areretrieved.OR requires either term toappear in the i...
Boolean Search Strategy      a   AND          b    a   family and violence          b          a   OR   c        a   famil...
What Search Engines Don’t Search                „Bots only crawl the visible web                which is only about 20% of...
Invisible Web contains               Commercial databases that               charge a fee, e.g., library research         ...
Library Databases Access               Authentication automatic for users               with Web access via CSUS and      ...
Choose based on your                   Information Need               Try Noodle Tools:               http://www.noodletoo...
Search Engine Comparisons               Most have built-in search tips or               help screens.               Boolea...
Handout               See “Searching the Web”               handout of special search               features and URLs for ...
Part 3Search Tips    World& Strategies   Wide               Web
Reading Parts of the URL http://www.lib.csus.edu/databases/The part before the colon is the accessmethod or protocol, (hyp...
Common Codes in Domain Namesedu - higher          net - computereducation             networkscom - commercial      int - ...
New Suffixes added by ICANN,                   effective Spring 2002               .info (anyone)    .museum (accredited) ...
Think critically about the                information you find on the Web...               Anybody can publish            ...
Questions you should ask when                     evaluating a Web page:               Who is the author or sponsor?      ...
You must...               Examine assumptions and               possible biases.               Distinguish between fact an...
Bogus sites proliferate               POP! the First Human Male Pregnancy               – http://www.malepregnancy.com    ...
Sites need to be examined                    carefully and compared               Martin Luther King Jr. – A Historical   ...
Web Searching Tips               Use unique words or phrases.               Check spelling !               Use synonyms or...
Citing Electronic Sources   Look for it on the Library Home     Page under Databases andPeriodical Indexes. Look on the le...
WARNING               Con artists and scams are               proliferating on the Web.               Don‟t use your credi...
Browser Configuration Tips               Clear the memory cache before you               begin a search session. It will s...
Shortcuts               Use Bookmarks or Favorites               Use Go from the pull-down menus               instead of ...
Part 4Popular   WorldSearch    WideEngines          Web
US Digital                   Media                   Universe                   Audience                   Reach          ...
Billions Of Textual Documents                    Indexed as of Sept 2, 2003 KEY: GG=Google ATW=AllTheWeb, INK=Inktomi, AV=...
There are specialized search                 engines for almost every topic               For a list of over 3,000 search ...
Most Popular Search Engines               All the Web, AltaVista,               Gigablast, Ask Jeeves, Dogpile,           ...
Google.com               Result rankings are based on               the number of links made to the               site fro...
Google.com               Most popular search engine &               searches greatest number of               pages (3.3 m...
Vivisimo.com               Queries one or more web search               engines (Metasearch).               Clusters Docum...
Yahoo.com               Originated “Directory” format               to organize sites by subject and               subhead...
Teoma.com               Results – ranked list.               Refine – suggestions to narrow               your search.    ...
Hotbot.com               Advanced searching in Hotbot and               other search engines lets you limit               ...
Alltheweb.com               Indexes 3.15 billion pages               (almost as many as Google).               You can cus...
This PowerPoint presentation                             was prepared by:                             Linda J. Goff       ...
Search Engine Comparison                               Always try more                               than one!            ...
CSUS LibraryInstructionFall 2004
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  1. 1. Uploaded by: CarAutoDriver Search Engine Strategies . . . Beyond Yahoo and Google Presented by Linda J. Goff, Head, Instructional Services CSUS LibraryLJG 8/11/04 Fall, 2004
  2. 2. Today’s Agenda Web Structure, Jargon & definitions. How search engines think and work. Picking the right web search tool. Searching techniques & tips. Evaluating your sources - thinking critically about information. Demonstration.CSUS LibraryInstructionFall 2004
  3. 3. Glossary blogging Metasearch browser Invisible Web cache phishing cookies portal sites html SacLink telnet http URL hypertext linkCSUS LibraryInstructionFall 2004
  4. 4. What is the World Wide Web? The World Wide Web (WWW) is a global interactive, dynamic, cross-platform, graphical hypertext information system that runs on the Internet.CSUS LibraryInstructionFall 2004
  5. 5. The Web is Growing Exponentially Over 10% of World is connected! Internet users estimated to be 605.60 million as of September 2002.CSUS Library Source: http://www.nua.ie/surveys/how_many_online/InstructionFall 2004
  6. 6. 3 Main Types of Search Tools:... Web Directory - Hierarchical - organized in a classification system. Standard Search Engine – uses mathematical algorithms and boolean searches for keyword searches Expert Pages – reviewed list.CSUS LibraryInstructionFall 2004
  7. 7. Expert Pages Infomine - Scholarly Internet Resource Collection http://infomine.ucr.edu/ Librarians Index to the Internet Information You Can Trust http://lii.org/ The WWW Virtual Library http://www.vlib.org CSUS Librarian Guides: http://library.csus.edu/guides/CSUS LibraryInstructionFall 2004
  8. 8. Now Web search tools can ... Search multiple search engines simultaneously. Find sites that answer natural language questions. Ranks sites by how many links have been made to them. Sorts matches into folders by categories. Have advanced searching featuresCSUS LibraryInstruction Or - a combination of the above.Fall 2004
  9. 9. Metasearch engines Search simultaneously across multiple search engines and displays top sites in each: – Dogpile.com – Vivisimo.com Warning: Some now charge for higher listings, e.g., OvertureCSUS LibraryInstructionFall 2004
  10. 10. Natural Language Search Type your questions in Natural Language, e.g., AskJeeves.com Analyzes words, grammar and syntax, and uses "templatics" to look for patterns in the way questions are asked. Jeeves responds with one or more closely related questions that it already knows the answer to.CSUS LibraryInstructionFall 2004
  11. 11. Part 2How SearchEngines Think Search Enginesand Work
  12. 12. Most search engines and databases use Boolean Operators to create search statements, e.g. (domestic or family) and (violence not sexual abuse)CSUS LibraryInstructionFall 2004
  13. 13. Boolean OperatorsAND requires both terms toappear in the items that areretrieved.OR requires either term toappear in the items that areretrieved.NOT excludes a term.
  14. 14. Boolean Search Strategy a AND b a family and violence b a OR c a family or domestic c b NOT d b bviolence not sexual abuse d
  15. 15. What Search Engines Don’t Search „Bots only crawl the visible web which is only about 20% of everything that is on the Internet. They don‟t look at the “Deep Web”, or “The Invisible Web.”CSUS LibraryInstructionFall 2004
  16. 16. Invisible Web contains Commercial databases that charge a fee, e.g., library research databases of periodical articles. Sites that require membership or a login. Searchable pages such as catalogs, phone books or directories, e.g.AMA Physician Search.CSUS LibraryInstructionFall 2004
  17. 17. Library Databases Access Authentication automatic for users with Web access via CSUS and SacLink. CSUS users with other Internet Service Providers (AOL, Prodigy etc.) must create a P.I.N. in EUREKA for authentication to access Library databases. To connect from off campus go to http://www.lib.csus.edu/databases/help/page.CSUS LibraryInstructionFall 2004
  18. 18. Choose based on your Information Need Try Noodle Tools: http://www.noodletools.com/de bbie/literacies/information/5loc ate/adviceengine.htmlCSUS LibraryInstructionFall 2004
  19. 19. Search Engine Comparisons Most have built-in search tips or help screens. Boolean operators, phrase searching and other limiters are often available. Be aware! Some now charge for higher page placement e.g, Overture.CSUS LibraryInstructionFall 2004
  20. 20. Handout See “Searching the Web” handout of special search features and URLs for most popular search engines. http://libweb.uoregon.edu/guide s/searchweb/srchweb-info.htmlCSUS LibraryInstructionFall 2004
  21. 21. Part 3Search Tips World& Strategies Wide Web
  22. 22. Reading Parts of the URL http://www.lib.csus.edu/databases/The part before the colon is the accessmethod or protocol, (hypertexttransfer protocol).The part after the double slashes is thenet address or domain name of thecomputer where the resource islocated.The directory path and filenamecome after the next slash.
  23. 23. Common Codes in Domain Namesedu - higher net - computereducation networkscom - commercial int - internationalfirms (+22 million) organizationsgov - government State or Country ofagencies origin:mil - military (US) – uk (Unitedorg - general Kingdom)noncommercial – ca (Canada)organizations – ca.us (California. United States)
  24. 24. New Suffixes added by ICANN, effective Spring 2002 .info (anyone) .museum (accredited) .aero (Airtransport .biz (business) industry) .name .coop (business (individuals) cooperatives) .pro Kids.us (Content (professionals) and technology restrictions)CSUS LibraryInstructionFall 2004
  25. 25. Think critically about the information you find on the Web... Anybody can publish anything on the Web. There are no editors and no central authorities. There are no guarantees that the site you find will be there next time you look.CSUS LibraryInstructionFall 2004
  26. 26. Questions you should ask when evaluating a Web page: Who is the author or sponsor? What authority/expertise do they have? What is the purpose/scope of the page? Is it current? When was it last updated? How complete and accurate is the information? Does it have a bias? How usable is it? Do the the links work?CSUS LibraryInstructionFall 2004
  27. 27. You must... Examine assumptions and possible biases. Distinguish between fact and opinion. Compare and contrast related pieces of information from other sources (print and online).CSUS LibraryInstructionFall 2004
  28. 28. Bogus sites proliferate POP! the First Human Male Pregnancy – http://www.malepregnancy.com Dihydrogen Monoxide Research – http://www.dhmo.org/ Clones-R-Us – http://www.d-b.net/dti/CSUS LibraryInstructionFall 2004
  29. 29. Sites need to be examined carefully and compared Martin Luther King Jr. – A Historical Examination – http://www.mlking.org The King Center http://web.archive.org/web/200102081 60923/http://thekingcenter.org/ – http://www.thekingcenter.com/CSUS LibraryInstructionFall 2004
  30. 30. Web Searching Tips Use unique words or phrases. Check spelling ! Use synonyms or multiple spellings (e.g., marijuana marihuana) Try more than one search engine. Use words like “research” or “policy” to find more scholarly sites. Use domain limit feature e.g., Domain:edu or domain:govCSUS LibraryInstructionFall 2004
  31. 31. Citing Electronic Sources Look for it on the Library Home Page under Databases andPeriodical Indexes. Look on the leftfor Guides For General & News and click on Citing Electronic Sources. The URL is...http://www.lib.csus.edu/guides/budge/eo graphy.htm.
  32. 32. WARNING Con artists and scams are proliferating on the Web. Don‟t use your credit card number unless you are assured of a secure system. Don‟t download unfamiliar software. Don‟t give out personal information.CSUS LibraryInstructionFall 2004
  33. 33. Browser Configuration Tips Clear the memory cache before you begin a search session. It will speed up your response time. Use the following path for I.E.: Tools -> Internet Options -> Delete Files. For Netscape use : Edit -> Preferences -> Advanced -> Cache Delete Cookies at the same screen.CSUS LibraryInstructionFall 2004
  34. 34. Shortcuts Use Bookmarks or Favorites Use Go from the pull-down menus instead of the Back button or use the History or right mouse button. Use the Stop and Reload buttons if loading a document takes too long. CTRL ALT DEL will bring up Windows 2000 Task Manager and you can close the browser if it is not responding.CSUS LibraryInstructionFall 2004
  35. 35. Part 4Popular WorldSearch WideEngines Web
  36. 36. US Digital Media Universe Audience Reach Home & Work Users January 2003 KEY: GG=Google, YH=Yahoo, MSN=MSN, AOL=AOL, AJ=Ask Jeeves, OVR=Overture (GoTo), IS=InfoSpace, NS=Netscape, AV=AltaVista, LY=Lycos, ELINK=EarthLink.com, LS=LookSmart,CSUS LibraryInstructionFall 2004 http://searchenginewatch.com/reports/netratings.html
  37. 37. Billions Of Textual Documents Indexed as of Sept 2, 2003 KEY: GG=Google ATW=AllTheWeb, INK=Inktomi, AV=AltaVista, TMA=Teoma.CSUS LibraryInstructionFall 2004 Source: http://searchenginewatch.com/reports/article.php/2156481
  38. 38. There are specialized search engines for almost every topic For a list of over 3,000 search engines go to Search Engine Guide: http://www.searchengineguide.com For detailed information aimed at search professionals try SearchEngineWatch: http://www.searchenginewatch.comCSUS LibraryInstructionFall 2004
  39. 39. Most Popular Search Engines All the Web, AltaVista, Gigablast, Ask Jeeves, Dogpile, Google, HotBot, Metacrawler, LookSmart, Lycos, MSN Search, Netscape Search, Teoma, WiseNut and Yahoo! (Source: SearchEngineWatch.com)CSUS LibraryInstructionFall 2004
  40. 40. Google.com Result rankings are based on the number of links made to the site from other web pages. Give you sites that web page creators have “voted” for with their links. An .edu link counts more than one from a .com page.CSUS LibraryInstructionFall 2004
  41. 41. Google.com Most popular search engine & searches greatest number of pages (3.3 million) Special features include Advanced search, Image, Froogle, Blogger, Google Catalogs etc.CSUS LibraryInstructionFall 2004
  42. 42. Vivisimo.com Queries one or more web search engines (Metasearch). Clusters Documents into groups based on this information. Groups the documents Orders the groups and the documents within each group. Displays the hierarchical categories.CSUS LibraryInstructionFall 2004
  43. 43. Yahoo.com Originated “Directory” format to organize sites by subject and subheadings. Can personalize: “My Yahoo”. Geographic versions “Get Local.”CSUS LibraryInstructionFall 2004
  44. 44. Teoma.com Results – ranked list. Refine – suggestions to narrow your search. Resources – link collections from experts to enthusiasts. Watch out for “Sponsored” page results – paid listings.CSUS LibraryInstructionFall 2004
  45. 45. Hotbot.com Advanced searching in Hotbot and other search engines lets you limit by: – Language – Domain – Region – Date – Content etc.CSUS LibraryInstructionFall 2004
  46. 46. Alltheweb.com Indexes 3.15 billion pages (almost as many as Google). You can customized your preferences. Language translator and language settings.CSUS LibraryInstructionFall 2004
  47. 47. This PowerPoint presentation was prepared by: Linda J. Goff Head, Instructional Services University Library California State University, Sacramento. ljgoff@csus.edu http://www.lib.csus.edu/services/instruction/indiv/CSUS LibraryInstruction LJG:2/16/2004Fall 2004
  48. 48. Search Engine Comparison Always try more than one! http://www.llrx.com /features/searchen ginechart.htmCSUS LibraryInstructionFall 2004
  49. 49. CSUS LibraryInstructionFall 2004
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