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News Media Network Analysis : Comparing Media Systems Mathematically by News Sources PARK, Daemin Korea Press Foundation Senior Researcher

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Page 1: News Media Network Analysis: Comparing Media Systems Mathematically

News Media Network Analysis : Comparing Media Systems Mathematically by News Sources

PARK, Daemin

Korea Press Foundation

Senior Researcher

Page 2: News Media Network Analysis: Comparing Media Systems Mathematically

Research Question

Edge List

Table of Contents

Similarity Algorithm & Matrix

uniqueness Algorithm & Matrix

News Media Network

NewsSource Beta

Page 3: News Media Network Analysis: Comparing Media Systems Mathematically

Level of Semantic Network Analysis

3

태그 클라우드

단어 간의 연결망(기사 공동출현), 명사의 연결망(기사 공동출현), 형용사의 연결망(기사 공동출현)

개체명, 개념의 연결망

정보원 연결망(기사 공동출현), 기관 연결망(주제 매개), 주제 연결망(기사 공동출현, 인용문 공동출현)

문장 연결망

인용문 연결망(기사 공동출현, 정보원, 유사도)

매체 연결망

매체 연결망(유사도)

단어

개체명

문장

매체

Page 4: News Media Network Analysis: Comparing Media Systems Mathematically

Research Questions

4

Comparing media system mathematically by news sources

Defining news media network by similarity and uniqueness

Comparing eight newspapers mathematically

by news sources related to the Four Major River Project

Page 5: News Media Network Analysis: Comparing Media Systems Mathematically

NewsSource Beta

5

Page 6: News Media Network Analysis: Comparing Media Systems Mathematically

NER Performance

재현율, 87.4

50.9

75

정확도, 90.3 92.7 97.8

0

10

20

30

40

50

60

70

80

90

100

인명 기관 직함

6

Page 7: News Media Network Analysis: Comparing Media Systems Mathematically

Data

검색어

4대강

<KINDS> 수록 8대 중앙지 : 국민, 경향, 동아, 문화, 서울, 세계, 한겨레, 한국

매체

2008.11.28.-12.31. / 2009.6.2.-7.30. / 2009.11.13.-12.31.

분석기간

<뉴스소스 베타>

자연어처리

7

Page 8: News Media Network Analysis: Comparing Media Systems Mathematically

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News Source Edge List

Page 9: News Media Network Analysis: Comparing Media Systems Mathematically

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RANKING

Page 10: News Media Network Analysis: Comparing Media Systems Mathematically

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Rich in uniqueness

Page 11: News Media Network Analysis: Comparing Media Systems Mathematically

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Cosine Similarity Algorithm

Page 12: News Media Network Analysis: Comparing Media Systems Mathematically

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Media Similarity Matrix

Page 13: News Media Network Analysis: Comparing Media Systems Mathematically

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uniqueness Algorithm Media & uniqueness Matrix

uniqueness = 1 – (Σ(Cosine Similarity-1)) / (number of media-1)

Page 14: News Media Network Analysis: Comparing Media Systems Mathematically

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News Media Network

Page 15: News Media Network Analysis: Comparing Media Systems Mathematically

Q & A