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  1. 1. Presentationon Search Engines<br />Presenters:<br />Swati<br />Richa<br />Sheetal<br />
  2. 2. Outline<br />What are Search Engines<br />Technical terms associated with SE<br />Basic Web Search Engine<br />Types of Search Engines<br />Working of Search Engines<br />Directories<br />Crawler based Search Engines<br />SEO<br />
  3. 3. …..cont’d<br />Keyword Search Operators<br />Various search Engines<br />Comparison<br />Searching Technique<br />10 Do’s and Don’ts while Searching<br />
  4. 4. What are Search Engines?<br />A search engine is a sophisticated piece of software, accessed through a page on a website that allows you to search the web by entering search queries into a search box. <br />The search engine allows one to ask for content meeting specific criteria and retrieving a list of references that match those criteria. <br />Search engines use regularly updated indexes to operate quickly and efficiently.<br />
  5. 5. Technical terms associated with SE<br />Crawling<br /> – Follow links to find information<br />Indexing<br /> – Record what words appear where<br />Ranking<br /> – What information is a good match to a user query?<br />Displaying<br /> – Find a good format for the information<br />Serving<br /> – Handle queries, find pages, display results<br />
  6. 6. A. Frank-T.Sharon<br />6<br />Basic Web Search Engine<br />Administrator<br />Users<br />Search Engine<br />Search Engine<br />Retrieval<br />Gathering<br />WWW<br />database<br />
  7. 7. Types of Search Engines<br />Basic Search Engines<br />assembled by software -- automated "spiders" or softbots.<br />Directory/Guide<br />Hierarchical list of subject categories -- assembled by people (“humanly-compiled”).<br />Meta-Search Engines<br />Uses several basic search engines in parallel.<br />Special(ty) Search Engines/Tools<br />Dedicated to a focused domain/community/media.<br />Popularity Search Engines<br />Use popularity link/usage analysis. <br />
  8. 8. Working of Search Engines<br />Directories<br />Crawler-based search engines<br />
  9. 9. Directories<br />Unlike search engines, which use special software to locate and index sites, directories are compiled and maintained by humans.<br />Directories often consist of a categorised list of links to other sites to which you can add your own site. <br />
  10. 10. Crawler based Search Engines<br />Crawler-based search engines use sophisticated pieces of software called spiders or robots to search and index web pages<br />These spiders are constantly at work, crawling around the web, locating pages, and taking snapshots of those pages to be cached or stored on the search engine’s servers<br />They are so sophisticated that they can follow links from one page to another and from one site to another<br />
  11. 11. Crawlers based Search Engines<br />Google is a prominent example of a crawler-based search engine.<br />Yahoo features both directories and crawler-based search engines.<br />Metadata<br />Metadata<br />Metadata<br />Metadata<br />Metadata<br />Metadata<br />Crawlers collecting data<br />
  12. 12. SEO…… <br />Technical part of web marketing.<br />
  13. 13. Keyword Search Operators<br />Plus (+) Operator <br />Minus (-) operator <br />Related (~) operator <br />OR operator<br />
  14. 14. Plus (+) Operator <br />Figure (a)<br />
  15. 15. Figure (b)<br />
  16. 16. Minus (-) operator <br />
  17. 17. Related (~) operator <br />
  18. 18. OR operator<br />
  19. 19. Various Search Engines<br />
  20. 20. Comparison<br />
  21. 21. Searching Techniques<br />Proximity Searching<br />Ability to specify how close within a record multiple terms should be to each other<br />Phrase Searching<br />Requires terms to be in the exact order specified within the phrase markings. The default standard for identifying phrases is to use double quotes (" ") to surround the phrase.<br />
  22. 22. 10 Do’s and Don’ts while Searching<br /><ul><li>Do’s
  23. 23. Use apt keywords.
  24. 24. Use ‘+’ sign while searching for multiple</li></ul> keywords.<br /><ul><li>Use quotes to search for exact phrases on the net.
  25. 25. Use specific portals for better results.
  26. 26. Practice cross-referencing. </li></li></ul><li>Don’t’s<br /><ul><li>Don’t rely much on sponsored links.
  27. 27. Avoid using form words.
  28. 28. Check for authenticity of source.
  29. 29. Don’t stop at the first page of results .
  30. 30. Don’t use just one search engine.</li></li></ul><li>How to add Search Engine on your browsers<br />
  31. 31. Continued……….<br />
  32. 32. Customized Search Engines<br />Why can’t we just use a normal search engine?<br /><ul><li>Specific Subject/project
  33. 33. Focus your learners
  34. 34. Protect younger learners against</li></ul> possible “bad sites”<br /><ul><li>Act as a knowledge filter
  35. 35. Make good sites more accessible
  36. 36. Eliminate possible millions of irrelevant results
  37. 37. Guide learners towards educator-evaluated web sources </li></li></ul><li>Create your own search engine<br /><ul><li>Open your browser and type in (or click):</li></ul><br /><ul><li>Sign into Google using your username and password or Register for an account
  38. 38. If you already have a Gmail Account you can sign into any Google application with your username and password</li></ul>To use all the lovely Google stuff you need an account!<br />
  39. 39. Create your own search engine<br /><ul><li>Decide on a name for your search engine.
  40. 40. Provide a brief description of exactly where your search engine will be searching
  41. 41. Restrict the sites to those you choose</li></ul>By choosing a good search engine name, it will make it easy for other teachers to find it easily and re-use it as well!<br />
  42. 42. Continued…..<br /><ul><li>Type in the sites that you want to include (1 per line)
  43. 43. Select Edition
  44. 44. Agree
  45. 45. Next</li></ul>You will be able to edit this list and add more sites later.<br />
  46. 46. Continued……<br />You will now be able to share the link to your search engine or you can even embed it on your school/class website or blog<br />
  47. 47. Continued……<br />
  48. 48. Continued……<br />How do I find my search engine again?<br />
  49. 49. Continued……<br />
  50. 50. Continued……<br />
  51. 51. Future <br />Image Scanning Search Engines.<br />Don’t Chat or E-Mail, Wave Instead.<br />Voice Recognition & Emotion Understanding.<br />Better Resources to Search Through.<br />Visual Searching<br />
  52. 52. ANY QUERIES ?????<br />
  53. 53. 8/12/2010<br />37<br />