Sena's Boolean Slides [Compatibility Mode]

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Boolean Logic Search

Siri Sena Bin Baba Hamid

Department of Library ScienceIPG Kampus Darulaman

2010



The 3M Search Strategy

… a simple way to help students prepare to useBOOLEAN logic to search

the WebCat

the internet

Make a simple table with three columnsand column titles:

MUST

MIGHT

MUST NOT 2




MUST MIGHT MUST NOT

List whatsearchterms youknow mustbe there

List whatsearchterms youthink mightbe there

List whatsearchterms youknow mustnot be there

3




allows you to build a search string

MUST MIGHT(+) MUST NOT(-)

You willsearchthese termsusing AND

You can addthesewords withOR

You cansubtract theseterms withNOT

4





MUST


MUST

MUST

China

maps

You want to searchfor sites of maps ofChina.

Search China AND maps

5



BOOLEAN SEARCH: ANDYou want to search for sites of maps of China.

Search China AND maps

Results: You will get only the light green sites

China

(MUST)

Maps

(MUST)

6





MUST

You willsearchthese termsusing OR

MUST MIGHT

First Nations

aboriginal

You want to searchfor sites about First

Nations.

.

Search First Nations ORaboriginal

7



BOOLEAN SEARCH: OR

You want to search for sites about FirstNations. Search First Nations OR aboriginal

Results: You will get all the green sites

FirstNations

(MUST)

Aboriginal

(MIGHT)

8





MUST

You willsearchthese termsusing NOT

MUST MUST NOT

China

dishes

You want to searchfor sites about China.

Search China NOT dishes

9



BOOLEAN SEARCH: NOT You want to search for sites about China.

Search China NOT dishes

Results: You will get only the green sites

China

(MUST)

dishes

(NOT)

10




allows you to build a more complex search string

MUST


MUST MUST

First NationsEducation

British Columbia

You want to search forsites about FirstNations education inBritish Columbia.

Search:

First NationsAND educationAND

British Columbia

11



BOOLEAN SEARCH: AND…AND

You want to search for sites about First Nationseducation in British Columbia. Enter search terms

First Nations AND education AND British Columbia

Results: You will get all the inner green sites

First Nations(MUST)

Education(MUST)

British Columbia(MUST)

12




allows you to build a search string to findadjacent terms:

MUST

You will keep theseterms adjacent byputting them inquotation marks

MUST MUST

”Gold Rush”

You want to searchfor sites about

The Gold Rush.

Search ”Gold Rush”

13



BOOLEAN SEARCH: “adjacent terms”

You want to search for sites about the Gold Rush.

Enter search terms “Gold Rush” (in quotation marks)to find only those sites where the words are adjacent:

Results: You will get all the inner green sites

Gold Rush

Sites with

gold and rush

14




allows you to conduct searches using truncated

search terms, the lowest common word roots:

MUST

You can “reduce” ortruncate these

search terms usingthe *

MIGHT

Buddh*

You want to find sites aboutthe Buddhist faith.

Will you search:

Buddha OR

Buddhism ORBuddhist ?

Or …

15



BOOLEAN SEARCH: “truncated terms”

You want to search for sites about Buddhism.

Results: You will get all these sites

Buddh(a) Buddh(ism) Buddh(ist)

Search the truncated form Buddh* to find all ofthe sites that apply to your area of study:

16



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THANK YOU

© Siri Sena Bin Baba Hamid/IPDA/2010

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Sena's Boolean Slides [Compatibility Mode]