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