day1 search-1
TRANSCRIPT
Power Searching:General• On-line resources are dispersed across various
Net locations• Web server• FTP server• NewsGroups• Mailing lists• Blogs• Discussionboards
–04/11/23–UIADR-2010 (version-6)
Power Searching:General• The challenge:• To locate the relevant resources with minimum effort• Several search tools help us spot Net info– Search Engines (like Google.com)– Search Directories
• Describes web sites (eg.: http://directory.google.com/)– Subject Gateways– Specialised Search tools– Meta Search Engines
–04/11/23–UIADR-2010 (version-6)
Power Searching: Search Engines• Database is created automatically using
computer programs• Index contains billions of web pages• Large number of results• Many irrelevant ones• General search engines like Google, Bing,
Yahoo...
–04/11/23–UIADR-2010 (version-6)
Power Searching:Better Googling• When you start a search, the search is done in the Google’s index of the
Web• Google’s program searches its index to find all the pages that contain your
search terms• output of this process could be millions of web pages……..• Now the real challenge comes in…. Weeding out the irrelevant ones• Google filters the relevant pages using hundreds of parameters- • like, does the page includes synonyms for the keywords- if so it gets
prominence; • if the search terms appear together that page gets prominence• If the title of the page contains the search term then the page is
considered more relevant gets search; quality of the page (page-rank) etc.• Using these parameters Google ranks each of the pages and displays the
results- the page with highest rank will appear first, then the one with second rank and so on…
• Ref.: http://www.google.com/howgoogleworks/
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Power Searching:Better Googling• Keywords: the word that you enter the search box. Try to use
a unique word that would appear on the documents you are looking for.
• Google is not case sensitive. Maternal health and Meternal HEALTH are same
• query [maternal health] will look for pages that contain all the two words.• Order of terms can change the output. • Phrase: “maternal health“ [ stop or common words: the it of and etc] +
inclusion operator, OR (|) and - exclusion operator Biology –Physics• Terms can be grouped with parentheses, “Gender Violence” (data|statistics)• synonym operator ~tutorial (will look for help, guide etc) ‘*’ represents
more than one word : hyphen (-) e-mail means e-mail, email ‘e mail’• [200/5] [23 % of 334] [1 $ in indian money]• [nth root of y] [3th root of 64] factorial of a no. [!] 5!• In hex in radians in binary [10 in hex] [2 in binary]• http://www.google.com/help/calculator.html–04/11/23 –Net-Tips-04–04/11/23
–UIADR-2010 (version-6) ([email protected])
Power Searching: Better Googling• Range of numbers use .. inventions 1800..2000• Define: is used to get definition of words• for live cricket score, type cricket• ‘time’ to obtain the latest time time cochin
‘movie’ for list of movies in your town movie:calicut
• Factual search population india die Mohandas Gandhi prime minister india
• Data search gdp india• Search with the Advanced option• http://www.google.co.in/search?hl=en&as_q=site
%3Aknowledgecaps.com&as_epq=&as_oq=&as_eq=&num=10&lr=&as_filetype=&ft=i&as_sitesearch=&as_qdr=d40&as_rights=&as_occt=any&cr=&as_nlo=&as_nhi=&safe=images
• http://www.google.co.in/search?q=site%3Aknowledgecaps.com&as_qdr=d40
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Power Searching:Better Googling• link:cds.edu (who links to a page)• Intitle: restricts the search to web page titles • Site: restricts the search to pages from a specific site/domain• economics of innovation site:edu site:org (no output. Why?)• Inurl: restricts your search to the web page links• site:hindu.com "Tax Forum" • intitle:"antenatal care” site:edu• intext: (search only the body text)• filetype:doc "Antenatal Care in Developing Countries".
http://tinyurl.com/dm2qry • filetype:ppt intitle:”reproductive health” http://tinyurl.com/cp67er • .
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Better Googling• Google search via SMS:
http://www.google.co.in/mobile/default/sms.html
• Send SMS to 9773300000 Eg.: “define subprime” or “1 usd in inr” “GDP of india”
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Power Searching: Googling extra• Google Cheatsheet: (a web page with all google
commands/services) http://www.google.com/help/cheatsheet.html
• Google tutorials:– The Google Librarian Centre
http://www.google.com/librariancenter/index.html, meant for helping Librarians exploit the Google services effectively, is a good resources worth exploring.
– 55 ways to have fun with Google A freely downloadable book on Google: http://www.55fun.com/
– http://www.googletutor.com/
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Services to test your Google proficiency (Google Games)
• Gwigle: http://gwigle.varten.net/ – Looking at the results, figure out the search string
• What did I search for: http://www.gamesforthebrain.com/game/whatsearch/
• Google Toolbar: http://www.google.com/tools/firefox/toolbar/FT5/intl/en/index.html
• Groowe: http://www.groowe.com/
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Power Searching: Other google services
• Google Scholar - http://scholar.google.com/ search service created for spotting scholarly materials easily Use this if you need results from journal articles, news report, abstracts etc– author:name-of-the-author “search string” Cited by’ feature, which
provides links to other articles that cite the selected article• Google Suggest: http://www.google.com/webhp?complete=1&hl=en
Suggest popular keywords as you type• Google images: (for images) http://images.google.com/• Google video: http://video.google.com// and now google acquired youtube.• Google news: http://news.google.com
– Google news archives– The service helps you dig out several-years-old news stories from news
sources such as BBC news, Time magazine and the like. http://news.google.com/archivesearch (try time line for the keyword olympics)
• A simple interface to access different Google services: http://www.gseek.com/
–04/11/23–UIADR-2010 (version-6)
