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A QUICK GUIDE TO:. EFFECTIVE WEB SEARCHING. SUCCESSFUL SITE EVALUATION. WWW. WEB BROWSER. SEARCH ENGINE. SUBJECT DIRECTORY. URL. BOOLEAN OPERATORS. EFFECTIVE WEB STRATEGIES: KEY WORDS. WHAT IS THE WWW?. Millions of pages of information.

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A quick guide to
A QUICK GUIDE TO:

  • EFFECTIVE WEB SEARCHING.

  • SUCCESSFUL SITE EVALUATION.


Effective web strategies key words

WWW.

WEB BROWSER.

SEARCH ENGINE.

SUBJECT DIRECTORY.

URL.

BOOLEAN OPERATORS.

EFFECTIVE WEB STRATEGIES: KEY WORDS.


What is the www
WHAT IS THE WWW?

  • Millions of pages of information.

  • Includes text, graphics, photographs, sound and video.

  • Hypertexts: texts with links to pages at other sites elsewhere on the Web.

  • Web browsers give access to it.


What is a web browser
WHAT IS A WEB BROWSER?

  • A Web browser is a computer program that allows you to view pages on the World Wide Web.

    The two most common browsers are:

  • Netscape.

  • Internet Explorer




How do you get access to web pages
HOW DO YOU GET ACCESS TO WEB PAGES?

YOUR BROWSER

CONNECTS TO

THE SERVER AND

REQUESTS A PAGE

SERVER MACHINE

RUNNING A WEB

SERVER

THE SERVER SENDS

BACK THE REQUESTED

PAGE

YOUR MACHINE

RUNNING A WEB BROWSER


What are search engines

SPECIAL WEB

PAGES THAT

HELP YOU FIND

MATERIAL .

HOW?

Just type a search

word or phrase into the

search box and the

search engine will:

Search its own database.

Return results presented in order of relevance

WHAT ARE SEARCH ENGINES?


How does a search engine work
HOW DOES A SEARCH ENGINE WORK?

  • It uses robots or “spiders” to search the web and build its database.

  • The database consists of indexed documents.

  • Your query is checked against the search engine keyword index.

  • The best matches are displayed on screen as hits.


How does a search engine work?

Finds new

CRAWLS

pages or

Internet

changed

information

LOCATES

on a page

Every word

on the page

VISITS

or some

words on the

page

Spider

LAUNCHES

RETURNS

or Robot

Search Engine’s

Server

PRODUCES

Search

SEARCHES

engine’s

database

index

RECEIVES

(Page created by Kathleen Schrock)

User


Search engines yahoo
SEARCH ENGINES: YAHOO

SEARCH ENGINES: YAHOO

Try it out at:

Http://www.yahoo.com


What are subject directories
WHAT ARE SUBJECT DIRECTORIES?

  • SPECIAL WEB PAGES WHERE INFORMATION IS CATEGORIZED BY SUBJECT.

    HOW?

  • Each main topic has a list of subtopics.

  • Humans, not robots, are responsible for cataloguing directories material.

  • Best used when searching for broad topics .




How does a directory work?

VISITS

Internet

EVALUATES

Directory

Employee

ADDS and “CATALOGS”

PRODUCES

Directory’s

Directory’s

searchable

browsable

index

categories

Directory’s

Server

RECEIVES

SEARCHES

BROWSES

(Page created by Kathleen Schrock)

User


What is a url
WHAT IS A URL?

URL: Uniform Resource Locator:

  • The address of any resource on the Internet that is part of the WWW.

    Ex 1: http://www.itisvinci.com

    Ex 2: http://www.itisvinci.com/~calanca

    Ex 3: http://www.itisvinci.com/users/

    calanca/ public_html


How to interpret a url
HOW TO INTERPRET A URL

The tilde sign (~) indicates personal

directories ofindividuals

http://www.itisvinci.com/~calanca

Top level Domain.

It specifies what type

of site it is.

Hyper Text

Transfer Protocol

(A WWW page)

The site has a directory

called Calanca.

Server name

(the name of the machine,

where the information is located)


What does it mean if a url ends in the following

.com

.net

.mil

.gov

.edu

.ac

.org

.it .uk .us .ca

company

network

military

government

educational

academic

non-profit organization

country codes

WHAT DOES IT MEAN IF A URL ENDS IN THE FOLLOWING?


SEARCH TIPS

Search engine results often take you deep within

web sites. Do you want to know where you are?

http://www.itisvinci.com/users/

calanca/ public_html

Home page

Directories

DELETE DIRECTORY NAMES

AND PRESS THE RETURN KEY.


What are boolean operators
WHAT ARE BOOLEAN OPERATORS?

Special logical tools that allow you to:

  • Broaden your search.

  • Narrow your search.

    The most commonly used are:

    AND, OR ,NOT

    Not all search engine allow their

    use to refine your search.


Do you want to narrow your search

DO YOU WANT TO NARROW YOUR SEARCH?

Boolean AND

Education

AND

Policy

You want both terms to appear in the documents.

This way you exclude irrelevant hits.


Do you want to broaden your search
DO YOU WANT TO BROADEN YOUR SEARCH?

BooleanOR

Education Policy, GB

OR

UK

You want at least one of the terms to appear in the

documents.


Do you want to exclude a term
DO YOU WANT TO EXCLUDE A TERM?

Boolean NOT

Nirvana AND

Buddhism

NOT

Cobain

This way you can exclude irrelevant hits.


SEARCH TIPS

Good queries = good results

Poor queries = poor results

Allow yourself enough time to formulate your

query.The more precise your query, the fewer

documents to review.


How can you improve your query

Use nouns as keywords.

Don’t include articles, pronouns conjunctions or prepositions.

Use enough keywords (up to 7 or 8 of them)

Make a list of synonyms.

Use wildcards *.

Be aware of capitalization.

Use phrases within quotes.

Be aware of spaces within words.

HOW CAN YOU IMPROVE YOUR QUERY?


Nouns are precise terms that correspond to concrete objects, while modifiers can easily be substituted in descriptions.

They are NOT considered

by search engines.

Key in enough words to

describe exactly what you’re

searching.

Use synonyms to refine

your search.


  • Use wildcards *.


Use lower cases, unless you

are searching for proper names. Ex:

If you search for the word

you’ll find documents containing : heart, Heart, HEART.

BUT

If you search for

you’ll only come out with documents

containing the word “Heart” in capital

letter.

  • Be aware of capitalization.

search

heart

search

Heart


Write phrases within quotes every time

you search for documents containing

all the words in your query in the exact

order you wrote them.

Ex:

you’ll find documents containing the

words you typed into your search box.

  • Use phrases within quotes.

search

“Successful Web Search Strategies”


Watch out for spaces between

words.

In the case of:

the use of additional spaces between

words would cause the search for the

right document to fail.

  • Be aware of spaces within words.

search

“Successful Web Search Strategies”


Do you want to know more
DO YOU WANT TO KNOW MORE?

TRY OUT FOLLOWING LINKS:

http://completeplanet.com/Tutorials/Search/index.asp

http://school.discovery.com/schrockguide/ppoint.htm

END OF PART 1


Part two

PART TWO

SUCCESSFUL SITE EVALUATION


Successful web site evaluation
SUCCESSFUL WEB SITE EVALUATION

  • Not all of the information on the World Wide Web is accurate

Have you ever

considered that:

  • Not all websites are good.

HOW CAN WE FIND GOOD

WEBSITES?


The five dear old questions

WHO is the author? (is he an expert, can we recognize him/her as such?)

HOW is the information given? (objective, biased, fact or opinion?)

WHERE does the site information come from? (primary or secondary info?)

WHEN was the site created? Is it updated?

WHY wasit created? Is the aim clear?

THE FIVE DEAR OLD QUESTIONS


List of quality criteria for web information
LIST OF QUALITY CRITERIA FOR WEB INFORMATION

  • AIM

  • ACCURACY

  • AUTHORITY

  • CURRENCY

  • DEPTH

  • DESIGN

  • REGULARITUY OF UPDATE


AIM

  • Are the aims of the site/page clearly stated?

  • Does the site/page achieve its aims?

  • Are there any hidden aims (product promotion, indoctrination)?


Accuracy
ACCURACY

LANGUAGE ACCURACY

  • Are there any spelling mistakes?

  • Are there any grammar mistakes?

    CONTENT ACCURACY

  • Has the content been reviewed by a third party?

  • Are there any references and bibliographies?


Does the URL contain the following?

.edu

.org

.ac

.gov

The information is more likely

to be correct.

ACCURACY TIP

  • Can you contact the author?

If you have any

doubts

contact him.

Is there an e-mail address/

contact address/phone number?


Authority
AUTHORITY

  • Who is the author?

  • Is he/she an expert?

  • What institution has published the material on the Web?


Imagine you used a search engine to find information about “videoconferencing”.

You decide to try out this address.

AUTHORITY TIP

http://www.icbl.hw.ac.uk/ltdi/ltdi-pub.htm#VCStudies

Learning Technology

Dissemination Initiative

(A Project by Heriot-Watt

University)

University

(What Institution?)

Heriot-Watt

University

(Where?)

In the United Kingdom


Currency
CURRENCY

  • When was the page/site created?

  • Is this stated or not?

  • Is the material regularly updated?

  • Are there any dead links on the page/site?

    Beware of outdated material!!


Depth
DEPTH

  • Does the site provide exhaustive coverage of the topic you searched for?

  • Does it claim to be comprehensive and turns out to be very poor, instead?


Design part 1

The speed of download

The ease of navigation

Does the page/site download quite fast?

Are there too many images/frames that cause download to be too slow?

DESIGN part 1

  • Is the resource organized in order to be browsed easily?

  • Are there buttons helping navigation? (i.e. back, forward, home).

  • Is there a site map?


Regularity of update
REGULARITY OF UPDATE

  • Is the site updated at regular intervals?

  • Can you see that it is?

  • Are the links regularly updated?

  • How many dead links are on the page/site?


Design part 2

The colour scheme

Compatibility

Have colours been well used?

Is the page /site easy to read?

(yellow characters on a red background are probably better to be avoided)

DESIGN part 2

  • Does the page/site require specific software to be accessed?

  • Is the resource material recognized by all browsers?


Do you want to know more1
DO YOU WANT TO KNOW MORE?

Try out this address:

http://www.sosig.ac.uk/desire/internet-detective.html

An interesting, interactive tutorial to become

an Internet Detective


Bibliography 1
BIBLIOGRAPHY 1

  • Web Searching

  • Tutorial: Guide to Effective Searching of the Internet: http://completeplanet.com/Tutorials/Search/index.asp

  • ICT4LT Module 1.5 Introduction to the Internet: http://www.ICT4LT.org

  • "Successful Web Searching Strategies”:

    http://school.discovery.com/schrockguide/ppoint.html

  • "A helpful Guide to Web Search Engines”: http://www.monash.com/spidap4.html


Bibliography 2
BIBLIOGRAPHY 2

  • "Search Engine Math”:

    http://searchenginewatch.com/facts/math.html

  • "Exploiting Internet resources Off-Line" (Graham Davies):

    http://ourworld.compuserve.com/homepages/GrahamDavies1/

    gdghent.htm

  • "Web Skills for Language Learning" (Charlie Mansfield & Tom McNeill):

    http://www.well.ac.uk/wellproj/wellbook.htm


Bibliography 3
Bibliography 3

Web Sites Evaluation

  • "Evaluating Websites”

    http://servercc.oakton.edu/~wittman/find/eval.htm

  • "The ABCs of Web Site Evaluation” http://school.discovery.com/schrockguide/ppoint.html

  • "Where are the good Web Pages?" (David Eastment) http://www.eastment.com/eval.html

  • "ICT4LT Project:Evaluation Form"

    http://www.ICT4LT.org

  • How to search the web:" Internet Detective"

    http://www.sosig.ac.uk/desire/internet-detective.html



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