Introduction to webometrics(13 mar2011)

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Transcript of Introduction to webometrics(13 mar2011)

Introduction to WebometricsQuantitative Web Research for the Social Sciences

• 이 슬라이드는 Mike Thelwall 의 ‘ Introduction to Webometrics’ 의 1 장을 정리한 자료입니다 .

Myunggoon Choi영남대학교 언론정보학과qksil1630@gmail.com

myunggoon.choi@gmail.com

http://www.webometrics.info

Cybermetrics Lab, A research group of the Spanish National Research Council (CSIC)

Design and Weighting of Indicators

a) The volume of the Web contents (number of

web pages and files) and b) the visibility and im-

pact of these web publications according to the

number of external inlinks (site citations) they

received

Design and Weighting of Indicators

Webometrics Rank

Visibility(External Inlinks)

50%

Size(Web Pages) 20%

Rich Files 15%

Scholar 15%

Yeungnam University

1336 / 12000 universities

Contents

History and Definition

Aspects of Web

New and Old Problem (Web-Based Phenomena

and Offline Phenomena Reflected Online

1.

2.

3.

History and Definition1

Definition

The study of web-based phenomena using

quantitative techniques and drawing upon in-

formetric methods.

(Björneborn and Ingwersen, 2004)

Informetric method

The production, dissemination and use of all

forms of information, regardless of its form or

origin.

Ex. Citation analysis

History

Being coined in print by an article, which identi-

fied the web as an important source for measur-

ing documents and information

(Almind and Ingwersen, 1997)

- The term

History

Web search engine owned by Yahoo! and

launched on 15 December 1995

Providing large-scale link measurements

A study in each Scandinavian country

- AltaVista

A study in each Scandinavian country

A study that included a count of the number of

web pages in each Scandinavian country that

linked to the pages of each other Scanadina-

vian country

(Ingwersen, 1998)

1. Link analysis

2. The reliability and coverage of search engines

3. Changes in the content of the web or individ-

ual collections of web pages

(Bar-Ilan, 2004)

Three types of Webometrics(Web-based measurement research)

a) Arising in parallel with the development of We-

bometrics , b) Being used to describe the same

research as webometrics and c) Preferred in

Spain

Cybermetrics

Being resolved by allowing cybermetrics to be

more general – referring to non-web Internet re-

search, such as email or newsgroup studies, in

addition to web research

(Björneborn and Ingwersen, 2004)

The difference between two terms

Aspects of Web2

Webometrics is concerned with measuring as-

pects of the web:

a) web sites, b) web pages, c) parts of web pages,

d) words in web pages, e) hyperlinks, f) web

search engine results.

Huge scale

1. The number of web sites

2. The number of web pages

3. The number of blogs

Small scale

1. The number of web sites in Korea

2. The number of web pages in the CNN

3. The number of blogs mentioning Barack

Obama before the 2008 presidential campaign

New and Old Problem3

New Problem

1. Election web sites

2. Online academic communication

3. Bloggers as amateur journalists

4. Social networking

- Web-Based Phenomena

Old Problem

1. The impact of spread of ideas

2. Public opinion

3. Informal scholarly communication

- Offline Phenomena Reflected Online

Case★

데이터 과학 , ' 소셜 ' 을 분석하다

< 출처 > 과학동아

의원님 ‘사적 정보’ 과학으로 엿보다

< 출처 > 시사 IN

Questions

Thank you

Myunggoon Choi영남대학교 언론정보학과qksil1630@gmail.com

myunggoon.choi@gmail.com