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Search ToolsChapter 3 | Searching theWeb
Outcomes Studentswill be able to describe the three major types of search tools
Search ToolsSearch Engines, Directories, and Meta-SearchEngines… OH MY!
Chapter 3: Searching the                                                     WebDirectoriesA  human-compiled hierarchical...
Chapter 3: Searching the                                                    WebDirectoriesA   breadcrumb trail shows the ...
Chapter 3: Searching the                                                      WebSearch Engines Three   major components ...
Chapter 3: Searching the                                                    WebSearch EnginesA  spider or bot automatical...
Chapter 3: Searching the                                                       WebSearch Engines Typical   information co...
Search Engines Search engines use different algorithms to  rank Web pages in a search results list Most search engines a...
Chapter 3: Searching the                                                 WebSearch Engines Some  search tools provide spe...
Chapter 3: Searching the                                                         WebMeta-Search Engines Compilesthe searc...
The EndPlease proceed to the next lesson activity!
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Search tools

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Transcript of "Search tools"

  1. 1. Search ToolsChapter 3 | Searching theWeb
  2. 2. Outcomes Studentswill be able to describe the three major types of search tools
  3. 3. Search ToolsSearch Engines, Directories, and Meta-SearchEngines… OH MY!
  4. 4. Chapter 3: Searching the WebDirectoriesA human-compiled hierarchical list of Web pages Organizes links in categories and subcategories Users drill down through categories and subcategories to find specific information 4
  5. 5. Chapter 3: Searching the WebDirectoriesA breadcrumb trail shows the hierarchical arrangement of categories and subcategories through which you have clicked Yahoo! was one of the first directories 5
  6. 6. Chapter 3: Searching the WebSearch Engines Three major components  Spider, Bot, or Web crawler  Index  Search engine software 6
  7. 7. Chapter 3: Searching the WebSearch EnginesA spider or bot automatically browses the Web going from link to link to add and update its Web page index Search engine software compares search keywords to index and presents search results list 7
  8. 8. Chapter 3: Searching the WebSearch Engines Typical information collected by a spider  Page title, URL, meta tag keywords  Occurrence of keywords in page  All of the words on the page  Internal links  Number and relevancy of other pages that link to the page 8
  9. 9. Search Engines Search engines use different algorithms to rank Web pages in a search results list Most search engines also include paid or sponsored listings on the search results page
  10. 10. Chapter 3: Searching the WebSearch Engines Some search tools provide special toolbars you can download as browser plug-ins 10
  11. 11. Chapter 3: Searching the WebMeta-Search Engines Compilesthe search results from multiple search engines into one list  Some eliminate duplicates  Watch for paid or sponsored listings in search results list  metacrawler  Dogpile  Mamma  Ixquick 11
  12. 12. The EndPlease proceed to the next lesson activity!

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