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    Presentationjava Presentationjava Presentation Transcript

    • Presentationon Search Engines
      Presenters:
      Swati
      Richa
      Sheetal
    • Outline
      What are Search Engines
      Technical terms associated with SE
      Basic Web Search Engine
      Types of Search Engines
      Working of Search Engines
      Directories
      Crawler based Search Engines
      SEO
    • …..cont’d
      Keyword Search Operators
      Various search Engines
      Comparison
      Searching Technique
      10 Do’s and Don’ts while Searching
    • 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.
    • Technical terms associated with SE
      Crawling
      – Follow links to find information
      Indexing
      – Record what words appear where
      Ranking
      – What information is a good match to a user query?
      Displaying
      – Find a good format for the information
      Serving
      – Handle queries, find pages, display results
    • A. Frank-T.Sharon
      6
      Basic Web Search Engine
      Administrator
      Users
      Search Engine
      Search Engine
      Retrieval
      Gathering
      WWW
      database
    • Types of Search Engines
      Basic Search Engines
      assembled by software -- automated "spiders" or softbots.
      Directory/Guide
      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.
    • Working of Search Engines
      Directories
      Crawler-based search engines
    • 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.
    • 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
    • Crawlers based Search Engines
      Google is a prominent example of a crawler-based search engine.
      Yahoo features both directories and crawler-based search engines.
      Metadata
      Metadata
      Metadata
      Metadata
      Metadata
      Metadata
      Crawlers collecting data
    • SEO……
      Technical part of web marketing.
    • Keyword Search Operators
      Plus (+) Operator
      Minus (-) operator
      Related (~) operator
      OR operator
    • Plus (+) Operator
      Figure (a)
    • Figure (b)
    • Minus (-) operator
    • Related (~) operator
    • OR operator
    • Various Search Engines
    • Comparison
    • 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.
    • 10 Do’s and Don’ts while Searching
      • Do’s
      • Use apt keywords.
      • Use ‘+’ sign while searching for multiple
      keywords.
      • Use quotes to search for exact phrases on the net.
      • Use specific portals for better results.
      • Practice cross-referencing.
    • Don’t’s
      • Don’t rely much on sponsored links.
      • Avoid using form words.
      • Check for authenticity of source.
      • Don’t stop at the first page of results .
      • Don’t use just one search engine.
    • How to add Search Engine on your browsers
    • Continued……….
    • Customized Search Engines
      Why can’t we just use a normal search engine?
      • Specific Subject/project
      • Focus your learners
      • Protect younger learners against
      possible “bad sites”
      • Act as a knowledge filter
      • Make good sites more accessible
      • Eliminate possible millions of irrelevant results
      • Guide learners towards educator-evaluated web sources
    • Create your own search engine
      • Open your browser and type in (or click):
      http://tr.im/googlesearch
      • Sign into Google using your username and password or Register for an account
      • 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!
    • Create your own search engine
      • Decide on a name for your search engine.
      • Provide a brief description of exactly where your search engine will be searching
      • 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!
    • Continued…..
      • Type in the sites that you want to include (1 per line)
      • Select Edition
      • Agree
      • Next
      You will be able to edit this list and add more sites later.
    • 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
    • Continued……
    • Continued……
      How do I find my search engine again?
    • Continued……
    • Continued……
    • Future
      Image Scanning Search Engines.
      Don’t Chat or E-Mail, Wave Instead.
      Voice Recognition & Emotion Understanding.
      Better Resources to Search Through.
      Visual Searching
    • ANY QUERIES ?????
    • 8/12/2010
      37