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Searching GoogleSearching GoogleTMTM
SHR Medical Library
In This In This SessionSession You Will Learn You Will Learn
How Google Works Tips for Searching
Google Boolean Logic Google Special Features Tips for evaluating
information on the Internet
A. Same number of syllables as YAHOO
B. Named after founder’s dog
C. Misspelling of Googol
Test Your Google I.Q. Test Your Google I.Q.
Why is Google called “Google”?
Answer is C!
Originates from term Googol means 10100
Test Your Google I.Q. Test Your Google I.Q.
Answer from: http://en.wikipedia.org/wiki/Googol
““Don’t Be Evil”Don’t Be Evil”
Started in 1996 as the PhD research project of engineering students Sergey Brin & Larry Page at Stanford University
They never went on to finish their PhD
From: http://en.wikipedia.org/wiki/Google
The Little Spider that Could…The Little Spider that Could…how search engines workhow search engines work
Google refers to their spiders as Googlebots
Crawls the web - sends request to web page – passes off page to Google indexer
They are not a directories
i.e. Google Directory
From: http://www.googleguide.com/google_works.html
A (very brief) description of A (very brief) description of How Google Gets ResultsHow Google Gets Results
1. Searches for all of your keywords as a phrase
2. Will search to see if our search terms are found close together on the page
3. Measures number of times your keyword appears
4. plus some other secret stuff
5. multiplies page’s individual scores by its ‘Page Rank’
6. Then Displays top 1,000 in order of relevance
Based on IMPACT factor premise from scholarly publishing
Google applies this to the Web: importance of Web page judged by number of hyperlinks pointing to it from other pages
Page RankPage RankTMTM
From: http://www.google.com/technology/
Deep Web or Invisible WebDeep Web or Invisible Web
Google & others search about 15%
Internet
Can Google Do it All?Can Google Do it All?
Google and other Internet search engines access only 7% of available
health-related information.
Source: Henderson J. Google scholar: A source for clinicians? CMAJ 2005;172(12):1549-1550
Google ScholarGoogle Scholar
•Still in BETA, meaning its still in a developmental phase
•Does not used controlled vocabulary and does not have up to date access to current journal articles
Let’s Get Googling!Let’s Get Googling!
Go to Google Canada: www.google.ca
Basic Google Search ScreenBasic Google Search Screen
Choose what to search
Enter search
terms here
Click here when ready to start
search
Can choose to search only Canadian sites
Set your preferences
Automatically takes you to the first site in results
URL- the website address
Get more help with your searching
Title of Web Page
Example: http://www.saskatoonhealthregion.ca/
http:// - stands for hypertext transfer protocal
www – World Wide Web
saskatoonhealthregion – this is the domain name
.ca – this is the type of domain, this is a Canadian site
URL: Uniform Resource LocaterURL: Uniform Resource Locater
Setting Your PreferencesSetting Your Preferences
Understanding Google Results
Database searched
Number of results
Words searched
Cached & Similar Pages
Search terms in Bold
Results current as of January 29, 2007
Image SearchImage Search
Results current as of January 29, 2007
Click on Images and then click on Search
Click on Advanced Image Search for more options
Map SearchMap Search
Click on Maps and then click on Search
Maps
Shows location of Museum
Results current as of January 29, 2007
AND, OR, NOT …. Boolean OperatorsAND, OR, NOT …. Boolean Operators
Dogs
Dogs Cats
AND is exclusive – must have both terms
OR is inclusive- must have either idea
Dogs AND Cats
Cats
Dogs OR Cats
AND, OR, NOT …. Boolean OperatorsAND, OR, NOT …. Boolean Operators
NOT : is exclusive,
must have first term not
the second
Cat Dog
Cat Not Dog
AND is the default in Google
Example: dogs AND cats = dogs cats
Phrase put phrase in quotes
Example: “The truth about cats and dogs”
OR can use the word OR and can use symbol (I)
Example: dogs OR cats = dogs I cats
+ forces search of common words
Example: the + truth + about + cats + dogs
Synonyms searched using Tilde (~)
Example: dogs ~ puppies ~ terrier ~ husky
Googlean BooleanGooglean Boolean
Google Advanced SearchGoogle Advanced Search
ANDPhrase
OR
NOT
Google Advanced SearchGoogle Advanced Search
Pearl Growing: Helpful when you find the perfect site and
want more like it
Allows you to search within Google Books or only for MAC computer stuff, etc.
1. Choose some search terms
2. Try different combinations (with all the words, with the exact phrase, with at least one of the words, without
the words)
3. Choose some limitsfile type (.ppt, .doc)
Language (English, French)Domain (.edu, .gov, .org, .ca)
4. Ask Us Questions!
Try It! Google Advanced Search
Google Advanced: Sample SearchGoogle Advanced: Sample Search
We limit our search to Power Point Presentations
Google Advanced: Sample SearchGoogle Advanced: Sample Search
Results current as of January 30, 2007
Our Results are all Power Point Presentations
Other Google StuffOther Google Stuff
Quick Tips: Evaluating Web SitesQuick Tips: Evaluating Web Sites
• Who Runs the Site? Check the About Us Page, Do they provide any contact information? (anonymous sites can spell trouble). Do you recognize the organization, institution or agency?
• Quality of Information. Check when it was last updated (on bottom of page). Does the information seem credible?
• Privacy. Check for their Privacy Policy. Do they use cookies? How are they using this information.
• Secure Connection? Is there a lock icon in Security Status bar, located on right side of address bar?
Note the lock icon to show the page is secure
Google RecapGoogle Recap
Google is a search engine, does not have access to same information as MEDLINE, CINAHL, etc.
Google supports partial Boolean (OR, NOT and phrase searching)
Easier to use Google Advanced Search Screen
Advanced Search allows you to apply limits
Can search for images, news, scholarly literature, etc.
Session RecapSession Recap
You Have Learned:
How Search Engines, specifically Google works How to search in the Basic Google Search
Screen Boolean Logic & how Google uses Boolean How to search in the Advanced Google Search
Screen How to evaluate websites
Need More Help?Need More Help?
Don’t Hesitate to Call or E-mail the SHR Medical Library Staff!
E-mail: [email protected]
Phone:
306-655-8228
Hours:
Monday thru Friday: 8am – 5pm
