Internet search-tools
- 1. Internet Search Tools 1.01- Understand Internet search tools and methods.
- 2. 1.01 Understand Internet search tools and methods. Slide 2 Two Categories of Search Tools ο¬ Search Engines β Individual search engine β Meta-search engine ο¬ Subject Directories
- 3. 1.01 Understand Internet search tools and methods. Slide 3 Individual Search Engines ο¬ Individual search engines use computer programs called βspidersβ to match key search words with the web pages that contain them. β Returns a large volume of results β Information is not filtered for validity, authenticity, or adult content β Results are returned in the form of links to sites that match terms used in the search
- 4. 1.01 Understand Internet search tools and methods. Slide 4 Take a look at search engines ο¬ www.Search.yahoo.com ο¬ www.Ask.com ο¬ www.Google.com
- 5. 1.01 Understand Internet search tools and methods. Slide 5 Meta-search Engines ο¬ Meta-search engines send requests for information to several search engines simultaneously and compile the results. β Duplicates are eliminated, thus yielding fewer results ο¬ Note: Google Custom Search Engine allows the user to select which search engines will be used
- 6. 1.01 Understand Internet search tools and methods. Slide 6 Take a look at meta-search engines ο¬ http://www.googlecustomsearch.com/ ο¬ http://www.mamma.com ο¬ http://www.surfwax.com/
- 7. 1.01 Understand Internet search tools and methods. Slide 7 Subject Directories ο¬ Developed and maintained by humans (instead of software robots) to search broad subject categories and their descriptions. ο¬ More reliable than search engines ο¬ Provide broad categories of information that allow users to drill down and narrow search results
- 8. 1.01 Understand Internet search tools and methods. Slide 8 Subject Directories (Continued) ο¬ Often used in research by government agencies, medical industries, and educational institutions ο¬ May be referred to as research database or searchable database ο¬ Results may include non-HTML formats, such as PowerPoints, PDF documents, script, and photographs
- 9. 1.01 Understand Internet search tools and methods. Slide 9 Take a look at subject directories ο¬ http://www.google.com/dirhp ο¬ www.libraryresearch.com ο¬ http://www.eric.ed.gov/ ο¬ http://dir.yahoo.com/ ο¬ http://infomine.ucr.edu ο¬ http://www.lii.org/ ο¬ http://www.about.com/
- 10. Compare ο¬ Suppose you are planning a vacation camping trip in one of the NC State Parks. Compare the results of each search tool by searching for the words NC State Parks. ο¬ www.google.com β 55+ pages of results ο¬ www.dogpile.com β 3 pages of results ο¬ http://www.lii.org/ - 4 results 1.01 Understand Internet search tools and methods. Slide 10