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Intro to searching1

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Transcript

  • 1. LIBR 1101
    • Week 4
    • Intro to Searching
  • 2. Turn on your speakers/Plug in your headphones please. There is audio in this presentation.
  • 3. LIBR 1101
    • Week 4
    • Intro to Searching
  • 4. Intro to Searching
    • Begin with the web
      • Familiar
      • Some useful tactics to learn
      • Same concepts as searching in the library
  • 5. Intro to Searching
    • Overview
      • Search Engines
      • Search Techniques
      • Search Strategy
      • Assignment
      • Search Tips
  • 6. What are search engines?
  • 7. Search Engines
    • What is a search engine?
      • Collection of web page files
      • Assembled automatically by a machine
  • 8. Search Engines
    • How do they work?
      • Crawl the web with “spider” or “bots”
      • Travels from link to link
      • Collects information on publicly available pages
      • Creates an index of all these sites
      • Matches the search terms you enter to the index
      • Presents the search with the results list, or “hits”
  • 9. Search Engines
    • SEARCH ENGINES DON’T
    • SEARCH THE ENTIRE WEB!
  • 10. Search Engines
    • Pros
      • Large chunk of publicly available web
      • Best way to search for specific info on the web
    • Cons
      • Too much info!!
      • Too many irrelevant hits
  • 11. Search Techniques
    • Example: Google
  • 12. Search Techniques
  • 13. Search Techniques
  • 14. Search Techniques
    • Boolean Logic
      • AND
        • NARROWS the search
        • Only retrieves hits that contain every word entered
  • 15.  
  • 16.  
  • 17.  
  • 18.  
  • 19. Search Techniques
    • Boolean Logic
      • Created by a British mathematician (George Boole)
      • Designed to produce better search results by creating precise queries
      • Libraries and search engines use several principles of Boolean logic
  • 20. Search Techniques
  • 21. Search Techniques
    • Boolean Logic
      • AND
        • NARROWS the search
        • Only retrieves hits that contain EVERY word entered
      • OR
        • BROADENS the search
        • Retrieves hits that contain ANY of the words entered
  • 22.  
  • 23.  
  • 24.  
  • 25.  
  • 26. Search Techniques
  • 27. Search Techniques
    • Boolean Logic
      • AND
        • NARROWS the search
        • Only retrieves hits that contain EVERY word entered
      • OR
        • BROADENS the search
        • Retrieves hits that contain ANY of the words entered
      • NOT
        • NARROWS the search
        • Limits a search to results that DON’T contain certain terms
  • 28.  
  • 29.  
  • 30. Search Techniques
    • Nesting
      • Placing terms in parentheses tells the search engine to search these first
      • Example: (politics OR government) AND ethics
    • Exact Search
      • Placing terms in quotes will search for the term exactly as typed
      • Example: “global warming”
  • 31. Search Strategy
  • 32. Search Strategy
    • REMEMBER!!
      • These techniques can be used in the library as well as on the web!
  • 33. Search Strategy
    • Creating a search strategy
      • Analyze the assignment
      • Determine the topic
      • Break the topic into concepts
      • Brainstorm terms for each concept
        • Synonyms
        • Broader terms
        • Narrower terms
  • 34. Assignment
    • Search Strategy Worksheet
    • STEP 1 : Think About and Define Your Topic
    • In one or two sentences summarize your search topic in your own words. If possible, state your
    • topic in the form of a question you want to answer.
    •                                                                                                                                        
  • 35. Assignment
    • Tips!
      • Start thinking of the final assignment!
      • You can use a topic that you are researching for another class
      • You can use the same topic you used for last week’s assignment
  • 36. Assignment
    • Search Strategy Worksheet
    • STEP 2 : Identify the Main Concepts
    • From the question(s) or statement(s) above, pick out the main ideas or concepts. In your search statement, you will combine these terms using the AND  connector to indicate that all concepts must be included in your search results.
    •  
    • First Concept                                         
    • AND        
    • Second Concept                                
    • AND        
    • Third Concept                                    
  • 37. Assignment
    • Search Strategy Worksheet
    • STEP 3 : Develop a List of Search Terms
    • For each concept in your topic, list other words that could be used in writing about that concept, e.g. synonyms, related terms, broader or narrower terms. In your search statement, you will combine these synonyms/related terms using the  OR  connector to indicate that any of these terms is acceptable for that concept.
    •  
    • First Concept                                 OR                               OR                                 OR                           
    • AND        
    • Second Concept                                 OR                               OR                                 OR                           
    • AND        
    • Third Concept                                 OR                               OR                                 OR                           
  • 38. Assignment
    • Broader Terms
      • Encompasses the idea behind the original term
      • Example: “Sports” is a broader term for “Football”
    • Narrower Terms
      • A smaller part of a bigger idea
      • Example: “Poetry” is a narrower term for “Literature”
  • 39. Assignment
    • Search Strategy Worksheet
    • STEP 4 : Combine Search Terms
    • Create a few possible search statements by combining terms using the  AND  and  OR  connectors. If there are any terms you want to exclude use the NOT connector to indicate this. Use parentheses around the  OR s if your statement uses both types of connectors e.g.  (demographic OR population) AND Canada.
    •                                                                                                                                        
    •                                                                                                                                        
    •                                                                                                                                        
  • 40. Web Searching Tips
    • Other tips
      • Use “Advanced Search” for better results
      • Place the most important terms first
      • Place a “-” in front of words you want to ignore
      • Place a “+” in front of words you want to include
      • Use the “Google Quick Reference Guide” to maximize your Google Searches
  • 41. Search Engines
    • General
    • www.google.com
    • www.bing.com
    • www.yahoo.com
    • www.ask.com
  • 42. Search Engines
    • Academic
    • Google Scholar – http://scholar.google.com
    • Internet Public Library - http://www.ipl.org/
    • Infotopia - http://www.infotopia.info/
  • 43. Search Engines
    • Subject Specific
    • Science - http://www.scirus.com/
    • Health- http://www.nlm.nih.gov/medlineplus/
    • Humanities - http://vos.ucsb.edu/
    • Government - http://www.usa.gov/