1. Russ Ewick Presents Triple T Searching the Net! Boolean Searches: More Than You Wanted to Know

2. Summer 2002 @ CTAP6 Operators: Or is or And = + Not = -

3. Summer 2002 @ CTAP6 + and - Operators like plus and minus are always place in front of the word they operate on. Example –Trees +evergreens +plants

4. Summer 2002 @ CTAP6 OR

5. Summer 2002 @ CTAP6 And

6. Summer 2002 @ CTAP6 The more terms or concepts we combine in a search with AND logic, the less records we will retrieve.

7. Summer 2002 @ CTAP6 Not

8. Summer 2002 @ CTAP6 Helpful Hints Using the operators Before you begin Keywords

9. Summer 2002 @ CTAP6 Using the Operators AND and NOT will always narrow your search OR broadens your search, increasing the number of hits

10. Summer 2002 @ CTAP6 Before You Begin Before you begin, think about what words you want to search. Develop a vocabulary that contains words describing your topic. If the computer finds nothing using one word, try doing the same search again but substitute a synonymous term.

11. Summer 2002 @ CTAP6 Keywords Decide which operators you want to use with which words for your search.

12. Summer 2002 @ CTAP6 The 3 Manifestations of Boolean Logic 1. Full Boolean logic with the use of logical operators 2. Implied Boolean logic with keyword searches 3. Predetermined language in a user fill- in template

13. Summer 2002 @ CTAP6 1. Full Boolean Logic with the use of logical operators Query: I'm interested in radiation, but not nuclear radiation. –Boolean logic: NOT Search: radiation NOT nuclear

14. Summer 2002 @ CTAP6 Another Example Query: I need information about cats. –Boolean logic: OR –Search: cats OR felines

15. Summer 2002 @ CTAP6 Here’s Another One Query: I'm interested in dyslexia in adults. –Boolean logic: AND Search: dyslexia AND adults

16. Summer 2002 @ CTAP6 2. Implied Boolean Logic with Keyword Searches Query: I'm interested in radiation, but not nuclear radiation. –Boolean logic: NOT –Search: radiation -nuclear

17. Summer 2002 @ CTAP6 More Implied Logic Query: I want to learn about cat behavior. –Boolean logic: OR, AND –Search: cats felines +behavior

18. Summer 2002 @ CTAP6 Another Example Query: I'm interested in dyslexia in adults. –Boolean logic: AND –Search: +dyslexia +adults

19. Summer 2002 @ CTAP6 3. Predetermined Language in a User Fill-In Template Query: I need information about cats –Boolean logic: OR –Search: Any of these words/Can contain the words/Should contain the words

20. Summer 2002 @ CTAP6 Another Example Query: I'm interested in dyslexia in adults. –Boolean logic: AND –Search: All of these words/Must contain the words

21. Summer 2002 @ CTAP6 One More Example Query: I'm interested in radiation, but not nuclear radiation. –Boolean logic: NOT –Search: Must not contain the words

22. Summer 2002 @ CTAP6 a final example Query: I want to learn about cat behavior. –Boolean logic: OR, AND –Search: Combine options as above if the template allows multiple search statements