Using Internet Effectively 4 Research 43 Ctp

7/23/2019 Using Internet Effectively 4 Research 43 Ctp

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Searching Internet

Effectively For Research

By

Muhammad Farooq Adeel,

Additional Director, CSA


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Overview

This session aims to enable you to:

Explore the strengths and weaknesses of different

search tools: how to pick the right one(s) for the

job.

Learn to use the tools appropriately

Ealuate the information that search tools proide:

how to efficiently cream off the most releantresults.

!eelop a strategy for building up your own well"

structured bank of links for future


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#e already know

how to use the#eb$ then whythis session%

Just because you live on

the Web, doesnt meanyou cant learn how touse it more effectivelyand more powerfully!

Sure, for some of you this is

a review. But many of you

may not remember some of

the strategies that put you in

control of your searches


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Surfing vs Searching

Surfing is used to describe casual lookingthrough material generally with nothing specificin mind.

Searching describes looking for somethingspecific, and generally by entering searchterms at a search engine to find informationyou want.

Surfing is scanning the worldwide web throughlinks from one site to another or one page toanother.

Searching on the other hand refers to lookingfor specific pieces of information using search

engines and other tools.


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Search, dont surf!

Its a multi trillion page Web


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Search Tools

Search !ngines

Meta"search !ngines

Sub#ect Directories

In$ormation %ate&ays

Specialist Databases


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Search Engine

A so$t&are programme $or the retrie'al o$data, $iles or documents $rom a databaseor net&or(

A brie$ summary o$ the inde)ed &eb page is prepared*he inde) usually contains +-s, titles, headings, andother &ords $rom the .*M- document

%ood For/ 0recision searches, using namedpeople or organisations, searching quic(ly and&idely, topics &hich are hard to classi$y

1ot %ood For/ Bro&sing through a sub#ect area


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!ain "arts of Search Engine

What you see/

Search !ntry Form

Search, Submit or %o Button

Display o$ Sites &2.yperte)t -in(

3nline .elp or 3ptions

What you dont see/

4Bot or Spider that searches the Internet Database5inde)6 o$ in$ormation gathered by

Spider


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#ow $oogle Search %or&s

.o& %33%-! Search Wor(s7mp8
http://google%20_how%20search%20works_%20on%20vimeo.mp4/http://google%20_how%20search%20works_%20on%20vimeo.mp4/


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!eta'search Engines

S(im"search se'eral search engines at once

+sually reach about 9:; o$ results o$ each engine

they 'isit

Cannot per$orm ad'anced"style searches &hich use

engine"speci$ic synta)

%ood For/ quic( search, results o'er'ie&, doing

simple searches &ith 9 or < (ey&ords1ot %ood For/ comprehensi'e results $rom a

comple) search


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!eta Search Tools...

Search using multiple searchengines

Search using a meta searchtool


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!a(or !eta'search Engines

&uula.com

'rainboost

!eeper#eb !ogpile

Excite

ot'ot

nfo.com

x*uick

+ayak

Leap,ish -amma

-etacrawler

-etaLib


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)irectories

.uman beings/

=ie& sites

Classi$y sites

Sometimes re'ie& and2or rate sites

Ideal $or bro&sing broad topics

-ess comprehensi'e than search engines

-ess duplication .igher quality


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Two Essential Directories

-ibrarians Inde) to the Internethttp/22lii7org

Well"organi>ed, selecti'e, and continually

updated collection, also (no&n as ?the thin(ing

persons @ahoo7 Maintained by a team o$ librarians at

Ber(eley 0ublic -ibrary

ids Clic(

http/22(idsclic(7org2

%reat starting point $or (ids7 Annotations arecare$ully &ritten7 3$$ers grade le'els and describes ho&

illustrated a site is7
http://lii.org/http://kidsclick.org/http://kidsclick.org/http://lii.org/


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Information Gateways

This type of resources include Internet catalogues, subjectdirectories and virtual libraries

Specialising in resources on a particular field

Organised into hierarchical subject categories

ompiled by people, not robots

!ore focus on sifting for relevance and "uality

Good #or$ topics that fall into a thematic area that has a

subject directory, guided browsing in your subject area%ot Good #or$ &uic'ly finding information from widely

varying themes


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%eb "ortals

Is &ebsite that brings in$ormation $rom

di'erse sources in a uni$ied &ay

*ypes/ 0ersonal, 1e&s, %o't, cultural,

corporate, stoc(, tender portals etc7


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Invisible(Deep()idden *eb

he Webs largest growing resource

stimated to be "# times si$e of thevisible Web

%ost not sub&ect to fees

'ncludes topic(specific databases


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*hy is some of the *eb invisible+

't is a proprietarydatabase

he crawler does not search a particularfile format or non(te)t interface

he page is available only afterregistration

he page is available to some enginesbut not others. *o two engines are the

same


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Taylor ,rancis /ournals #orld 'ank eLibrary

nstitute for 0perations 1esearch and -anagement

2ciences (3,01-2) 2pringer

!uke 4niersity 5ress

To 5ublic sector 4niersities only /stor.org

0xford 4niersity 5ress " 0xford /ournals

E'260 etc.

)E Subscribed Databases


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oolean Operators in Searchingthe %et

+ses commands 5operators6 such as A1D,3,

13*

Di$$erent search tools may use di$$erent

symbols A1D 13* E


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#ow important *+) is

7uery: 8m interested in the

relationship between education and literacy


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%hen -o you really nee- OR

01 is generally used for synonyms or related words.Query: I would like information

about education or literacy

/se +OT as a refinement techni0ue when


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/se +OT as a refinement techni0ue when

problem wor-s are li&ely to come up

7uery: want to see information about education9 but wantto aoid seeing anything about secondary


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-hrase and pro.imity searching

+sing uotation marks allows you tosearch for an e)act phrase, e.g.

-information literacy +sing */0 allows you to specify how

close to each other the terms you aresearching for should be


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Truncation or wildcard searches

Truncation:place a symbol at the end of the word so you

search for ariant endings of that word e.g. litera would

look for literature9 literacy9 literal

#ildcards:place a symbol within a word to find

ariations on ite.g. analy;e would find analyse or

analy


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%eb Search Strategies...

*ips $or e$$ecti'e &eb searching

+se as many synonyms as possible " search

engines use statistical retrie'al methods and

produce better results &ith more query &ords

A'oid use o$ 'ery common &ords 5e7g7, 4computer6

!nter search terms in lo&er case7 +se upper case

to $orce e)act match 5e7g7 4-ight Combat Aircra$t,

4-CA6


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%eb Search Strategies...

epeat the search by 'arying search terms and their

combinationsG try this on di$$erent search tools

!nter most important terms $irst " some search tools

are sensiti'e to &ord order

%o through at least H pages o$ search results be$ore

gi'ing up the scan


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oogle Advanced Search

Operators

Intitle2Allintitle/

Allinte)t/

Inurl2Allinurl/

Site/elated/

-in(/

De$ine/ Filetype/


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+ow it1s your turn

$oo- 2uc&

Using Internet Effectively 4 Research 43 Ctp

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Transcript of Using Internet Effectively 4 Research 43 Ctp