Replication Data for: Estimating Ideal Points of Newspapers from Editorial Texts (doi:10.7910/DVN/EL3KYD)

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Part 1: Document Description
Part 2: Study Description
Part 3: Data Files Description
Part 4: Variable Description
Part 5: Other Study-Related Materials
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Document Description

Citation

Title:

Replication Data for: Estimating Ideal Points of Newspapers from Editorial Texts

Identification Number:

doi:10.7910/DVN/EL3KYD

Distributor:

Harvard Dataverse

Date of Distribution:

2020-06-23

Version:

1

Bibliographic Citation:

Kaneko, Tomoki; Asano, Taka-aki; Miwa, Hirofumi, 2020, "Replication Data for: Estimating Ideal Points of Newspapers from Editorial Texts", https://doi.org/10.7910/DVN/EL3KYD, Harvard Dataverse, V1, UNF:6:f4ySRmlEgIXApbY7+teMjQ== [fileUNF]

Study Description

Citation

Title:

Replication Data for: Estimating Ideal Points of Newspapers from Editorial Texts

Identification Number:

doi:10.7910/DVN/EL3KYD

Authoring Entity:

Kaneko, Tomoki (The University of Tokyo)

Asano, Taka-aki (The University of Tokyo)

Miwa, Hirofumi (Gakushuin University)

Distributor:

Harvard Dataverse

Access Authority:

Miwa, Hirofumi

Depositor:

Miwa, Hirofumi

Date of Deposit:

2020-05-05

Holdings Information:

https://doi.org/10.7910/DVN/EL3KYD

Study Scope

Keywords:

Social Sciences, media slant, ideal point estimation, quantitative text analysis, unsupervised learning, Japan

Abstract:

Although measuring the ideal points of news media is essential for testing political communication theories based on spatial theory, prior methods of estimating ideal points of media outlets have various shortcomings, including high cost in terms of time and human resources and low applicability to different countries. We propose that unsupervised machine learning techniques for text data, specifically the combination of a text scaling method and latent topic modeling, can be applied to estimate ideal points of media outlets. We applied our proposed methods to editorial texts of ten national and regional newspapers in Japan, where prior approaches are not applicable because newspapers have never officially endorsed particular parties or candidates, and because high-quality training data for supervised learning is not available. Our two studies, one of which analyzed editorials on a single typically ideological topic while the other investigated all editorials published by the target papers in one year, confirmed the popular view of Japanese newspapers’ ideological slant, which validates the effectiveness of our proposed approach. We also illustrate that our methods allow scholars to investigate which issues are closely related to the respective ideological positions of media outlets. Furthermore, we use the estimated ideal points of newspapers to show that Japanese people partially tend to read ideologically like-minded newspapers and follow such newspapers’ Twitter accounts even though their slant is not explicit.

Methodology and Processing

Sources Statement

Data Access

Notes:

<a href="http://creativecommons.org/publicdomain/zero/1.0">CC0 1.0</a>

Other Study Description Materials

Related Publications

Citation

Title:

Tomoki Kaneko, Taka-aki Asano, and Hirofumi Miwa. “Estimating Ideal Points of Newspapers from Editorial Texts.” International Journal of Press/Politics.

Bibliographic Citation:

Tomoki Kaneko, Taka-aki Asano, and Hirofumi Miwa. “Estimating Ideal Points of Newspapers from Editorial Texts.” International Journal of Press/Politics.

File Description--f3825520

File: humancoded_positions.tab

  • Number of cases: 283

  • No. of variables per record: 5

  • Type of File: text/tab-separated-values

Notes:

UNF:6:t/wQ8GlK0H4yBt/ZOPeibw==

File Description--f3825531

File: MP_list.tab

  • Number of cases: 710

  • No. of variables per record: 3

  • Type of File: text/tab-separated-values

Notes:

UNF:6:MjomX1qRjO+/y2+UsiYKlw==

File Description--f3825535

File: previous_studies.tab

  • Number of cases: 12

  • No. of variables per record: 11

  • Type of File: text/tab-separated-values

Notes:

UNF:6:xyI134tUjbjk5WHbuMnNIg==

File Description--f3825540

File: survey19_abridged.tab

  • Number of cases: 1500

  • No. of variables per record: 7

  • Type of File: text/tab-separated-values

Notes:

UNF:6:chsD3qhS15TISjUjJ6BhLw==

File Description--f3825767

File: voter2017_IJPP.tab

  • Number of cases: 1778

  • No. of variables per record: 45

  • Type of File: text/tab-separated-values

Notes:

UNF:6:NgiagGMSjMMstYQr82NeUA==

Variable Description

List of Variables:

Variables

Newspaper

f3825520 Location:

Variable Format: character

Notes: UNF:6:/U1zU0O32EhHvk2Ct1fizw==

Date

f3825520 Location:

Variable Format: character

Notes: UNF:6:3nB0OjT6bI60j17oy8UMLA==

CoderA

f3825520 Location:

Summary Statistics: Valid 283.0; Mean 2.964664310954064; Max. 5.0; StDev 0.6003741242266559; Min. 2.0

Variable Format: numeric

Notes: UNF:6:zXCRvE6Bceoy7QPSaM+5eg==

CoderB

f3825520 Location:

Summary Statistics: StDev 0.9653547956386533; Max. 5.0; Min. 1.0; Mean 2.4169611307420475; Valid 283.0

Variable Format: numeric

Notes: UNF:6:X0YKK6JFxfWhn9VRODPQPg==

CoderC

f3825520 Location:

Summary Statistics: Min. 1.0; Mean 2.0530035335689076; StDev 1.2060793803140308; Valid 283.0; Max. 5.0

Variable Format: numeric

Notes: UNF:6:6XT9hccr3PiBtOmXytb2ag==

name

f3825531 Location:

Variable Format: character

Notes: UNF:6:SmY+jDU3skOEWDa/wcUM0Q==

account

f3825531 Location:

Variable Format: character

Notes: UNF:6:+RWVWjHfvVX3JKBliXBK0Q==

party

f3825531 Location:

Variable Format: character

Notes: UNF:6:ueq0hoaWJQhJZqZkGRT0pg==

Study

f3825535 Location:

Variable Format: character

Notes: UNF:6:YCeB92Eh9TiZZVGbezMJ8w==

Asahi

f3825535 Location:

Summary Statistics: Mean 0.72325; Valid 12.0; StDev 1.48890363110823; Max. 5.2; Min. -0.4;

Variable Format: numeric

Notes: UNF:6:MkoDOTR+V0yU267Jh9NQgQ==

Chugoku

f3825535 Location:

Summary Statistics: Mean 0.895; StDev 0.14849242404917495; Min. 0.79; Max. 1.0; Valid 2.0

Variable Format: numeric

Notes: UNF:6:wLTbg4hHFzasESN/MCRIyQ==

Chunichi

f3825535 Location:

Summary Statistics: Valid 3.0; StDev 1.0504443504219219; Mean 0.5566666666666666; Min. -0.62; Max. 1.4;

Variable Format: numeric

Notes: UNF:6:xKP8W5mA+0e3O0BZ8LtaLw==

Hokkaido

f3825535 Location:

Summary Statistics: Mean 0.925; StDev 0.2474873734152917; Min. 0.75; Valid 2.0; Max. 1.1;

Variable Format: numeric

Notes: UNF:6:OF783v7jW6YjSBeLSiOG0Q==

Kahoku

f3825535 Location:

Summary Statistics: Min. 0.95; Valid 2.0; Mean 1.225; Max. 1.5; StDev 0.38890872965260115

Variable Format: numeric

Notes: UNF:6:0Xpmp2rfrGi2vLIjWtz8MQ==

Mainichi

f3825535 Location:

Summary Statistics: Mean 0.8379166666666666; StDev 1.5666923152316987; Max. 5.6; Valid 12.0; Min. -0.2;

Variable Format: numeric

Notes: UNF:6:xKDnM7UdzAtAWChg5OqziA==

Nikkei

f3825535 Location:

Summary Statistics: Mean 1.078888888888889; Valid 9.0; Max. 5.4; Min. 0.04; StDev 1.7428241767634254

Variable Format: numeric

Notes: UNF:6:eXdS0dpTh/Tbnsuix0lwvw==

Nishinippon

f3825535 Location:

Summary Statistics: StDev 0.5727564927611035; Min. 0.99; Valid 2.0; Max. 1.8; Mean 1.395

Variable Format: numeric

Notes: UNF:6:OfgdHugsDhjxJ9poVrr87g==

Sankei

f3825535 Location:

Summary Statistics: Valid 8.0; Min. 0.21; Max. 6.0; Mean 1.43125; StDev 2.031962018064595;

Variable Format: numeric

Notes: UNF:6:z94hreaUspzJh+HX5nfYEA==

Yomiuri

f3825535 Location:

Summary Statistics: StDev 1.657965264467811; Min. 0.1; Mean 1.0035; Valid 12.0; Max. 5.7;

Variable Format: numeric

Notes: UNF:6:IdaDTqK13NdKw6RGqhkviA==

Q15_2

f3825540 Location:

Summary Statistics: Max. 11.0; Valid 1500.0; StDev 1.8686696265001421; Min. 1.0; Mean 6.401333333333339

Variable Format: numeric

Notes: UNF:6:aM608hqzzYAf3eMfNVN4bQ==

Q15_3

f3825540 Location:

Summary Statistics: Mean 4.923333333333334; Valid 1500.0; StDev 2.337469728583375; Min. 1.0; Max. 11.0

Variable Format: numeric

Notes: UNF:6:JAfv2PloBuLuD88FQkEBnA==

Q15_4

f3825540 Location:

Summary Statistics: Valid 1500.0; Min. 1.0; Max. 11.0; StDev 1.8120417266263387; Mean 5.387333333333333;

Variable Format: numeric

Notes: UNF:6:mqHOumdDDvt54IUP5lONpQ==

Q15_5

f3825540 Location:

Summary Statistics: Mean 5.970000000000001; StDev 1.5227100064827068; Max. 11.0; Valid 1500.0; Min. 1.0

Variable Format: numeric

Notes: UNF:6:3+7g1xfjgGLfKmkUsVvXcA==

Q15_6

f3825540 Location:

Summary Statistics: Max. 11.0; Min. 1.0; StDev 1.869783128650942; Valid 1500.0; Mean 6.425333333333338;

Variable Format: numeric

Notes: UNF:6:EIXyXf7eueJSwC5QqpfCVw==

Q15_7

f3825540 Location:

Summary Statistics: Mean 5.585333333333333; StDev 1.577459077223792; Max. 11.0; Min. 1.0; Valid 1500.0

Variable Format: numeric

Notes: UNF:6:1UOn3gzQPBshST4s3FI2tA==

Q15_8

f3825540 Location:

Summary Statistics: Valid 1258.0; Min. 1.0; StDev 1.4078557698225127; Mean 5.78060413354531; Max. 11.0;

Variable Format: numeric

Notes: UNF:6:1yqjgBvm+CMNlIxkPCRing==

IDNO

f3825767 Location:

Summary Statistics: Mean 1486.2339707536692; Valid 1778.0; Min. 4.0; StDev 857.9958156858794; Max. 2997.0

Variable Format: numeric

Notes: UNF:6:LVmSFn02FWBLDWGomtg8GQ==

PREFEC

f3825767 Location:

Summary Statistics: Max. 47.0; Min. 1.0; StDev 11.871332700862139; Valid 1778.0; Mean 20.377952755905593

Variable Format: numeric

Notes: UNF:6:rlMXgBlaL8XJou7Ph1PkZQ==

Q13_1

f3825767 Location:

Summary Statistics: Max. 99.0; Valid 1778.0; StDev 14.846333480865523; Min. 0.0; Mean 2.4195725534308132;

Variable Format: numeric

Notes: UNF:6:Rgn5i+fPyrss3qSIt7nyMw==

Q13_2

f3825767 Location:

Summary Statistics: Mean 2.465129358830141; Valid 1778.0; StDev 14.840368715912057; Max. 99.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:fJGCozO6vbQrQ97dGA6ivg==

Q13_3

f3825767 Location:

Summary Statistics: Max. 99.0; Min. 0.0; Mean 2.340832395950513; Valid 1778.0; StDev 14.85630772867985;

Variable Format: numeric

Notes: UNF:6:Yck2AjdbojkI/p/11POOPQ==

Q13_4

f3825767 Location:

Summary Statistics: Mean 2.368391451068628; Valid 1778.0; StDev 14.852865013166886; Max. 99.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:o6uvf3VPrHbdYjjdfvAsoA==

Q13_5

f3825767 Location:

Summary Statistics: StDev 14.859079602587379; Mean 2.318335208098991; Max. 99.0; Valid 1778.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:kzmQQR/8MYJtcp2fNz4jng==

Q13_6

f3825767 Location:

Summary Statistics: StDev 14.854978965188844; Mean 2.35151856017998; Max. 99.0; Valid 1778.0; Min. 0.0;

Variable Format: numeric

Notes: UNF:6:+WoE3ijqr9vMTfrPwlMtQA==

Q13_7

f3825767 Location:

Summary Statistics: Valid 1778.0; Min. 0.0; Max. 99.0; StDev 14.861680842224242; Mean 2.2969628796400485;

Variable Format: numeric

Notes: UNF:6:JjfqhTnNjTejNvgkVQ+Mqw==

Q13_8

f3825767 Location:

Summary Statistics: Mean 2.547806524184484; Min. 0.0; StDev 14.829179975769394; Valid 1778.0; Max. 99.0;

Variable Format: numeric

Notes: UNF:6:G+azi43LhCgxRW00xHJW6A==

Q13_9

f3825767 Location:

Summary Statistics: Max. 99.0; Min. 0.0; StDev 14.858113382476487; Mean 2.326209223847024; Valid 1778.0

Variable Format: numeric

Notes: UNF:6:0k9lgsYaTV+Qwnj/N/sOPQ==

Q13_10

f3825767 Location:

Summary Statistics: StDev 14.831347368088439; Max. 99.0; Valid 1778.0; Mean 2.53205849268842; Min. 0.0;

Variable Format: numeric

Notes: UNF:6:SDCeQYIq+cXQFuDVC0XN6g==

Q21

f3825767 Location:

Summary Statistics: Valid 1778.0; Max. 99.0; StDev 36.6305852573248; Mean 22.77277840269963; Min. 0.0

Variable Format: numeric

Notes: UNF:6:vLcNqYlRmmRWgvU519DrIA==

Q22_1

f3825767 Location:

Summary Statistics: Valid 1778.0; StDev 16.08627049869481; Min. 1.0; Max. 99.0; Mean 5.739032620922383;

Variable Format: numeric

Notes: UNF:6:qt+twP2RcaqaBspEy+SFJA==

Q23_1

f3825767 Location:

Summary Statistics: Min. 1.0; StDev 15.855170351196763; Valid 1778.0; Max. 99.0; Mean 5.059617547806533

Variable Format: numeric

Notes: UNF:6:CCsxlu+pw1FW9Seg+Beb2A==

Q23_2

f3825767 Location:

Summary Statistics: Min. 1.0; Max. 99.0; Mean 6.164229471316084; StDev 16.788030093325233; Valid 1778.0

Variable Format: numeric

Notes: UNF:6:XnpmGrs99TmQye7mCCquhQ==

Q23_3

f3825767 Location:

Summary Statistics: Mean 5.5629921259842625; Min. 1.0; Valid 1778.0; Max. 99.0; StDev 16.423548517597922

Variable Format: numeric

Notes: UNF:6:Ze1LAX+rKiFjmd5JhHXqRA==

Q23_4

f3825767 Location:

Summary Statistics: Min. 1.0; Max. 99.0; StDev 18.752840270066134; Mean 5.844206974128229; Valid 1778.0

Variable Format: numeric

Notes: UNF:6:QmP19ySuNKuJ6sijjdF0IA==

Q23_5

f3825767 Location:

Summary Statistics: Valid 1778.0; Max. 99.0; Min. 1.0; StDev 16.689817640758086; Mean 5.836332958380208;

Variable Format: numeric

Notes: UNF:6:RVkfQsl7irn/HUpuzGUlbA==

Q23_6

f3825767 Location:

Summary Statistics: Mean 6.762654668166463; StDev 18.141410394845916; Max. 99.0; Min. 1.0; Valid 1778.0

Variable Format: numeric

Notes: UNF:6:1XYbFcEOafhv4p3kImIWAQ==

Q23_7

f3825767 Location:

Summary Statistics: Mean 6.026996625421828; StDev 18.28340490328906; Min. 1.0; Valid 1778.0; Max. 99.0

Variable Format: numeric

Notes: UNF:6:x+QCgHvL+NNTQkFOfZuMoA==

Q23_8

f3825767 Location:

Summary Statistics: Valid 1778.0; Min. 1.0; Max. 99.0; StDev 19.969264533069868; Mean 7.120922384701926

Variable Format: numeric

Notes: UNF:6:WhVtFxGNaHLw3WkdrP+0yw==

Q23_9

f3825767 Location:

Summary Statistics: StDev 16.519003273079065; Min. 1.0; Max. 99.0; Valid 1778.0; Mean 5.9431946006749055;

Variable Format: numeric

Notes: UNF:6:tEr915EQocScOdgMVT1u6Q==

Q23_10

f3825767 Location:

Summary Statistics: Valid 1778.0; Mean 4.944319460067481; StDev 16.519790618023467; Max. 99.0; Min. 1.0

Variable Format: numeric

Notes: UNF:6:vCa7XlBMerxdAqU0hcKhZQ==

Q23_11

f3825767 Location:

Summary Statistics: Mean 6.021372328458947; Max. 99.0; Valid 1778.0; Min. 1.0; StDev 17.566229492968105;

Variable Format: numeric

Notes: UNF:6:Eobg7jkQVtEEx0awEh523Q==

Q23_12

f3825767 Location:

Summary Statistics: StDev 16.35350934941124; Max. 99.0; Mean 5.876827896512921; Min. 1.0; Valid 1778.0

Variable Format: numeric

Notes: UNF:6:thOAnh3Rj90C6uZm9bvTbQ==

Q23_13

f3825767 Location:

Summary Statistics: Mean 6.394825646794145; Min. 1.0; StDev 16.74884540483383; Valid 1778.0; Max. 99.0

Variable Format: numeric

Notes: UNF:6:ij1Uviql+5rue2api8/kVQ==

Q23_14

f3825767 Location:

Summary Statistics: Valid 1778.0; Max. 99.0; Min. 1.0; Mean 5.50562429696288; StDev 15.950832653127996;

Variable Format: numeric

Notes: UNF:6:V2+t4rNgx5LfiWYm2vCuJg==

Q23_15

f3825767 Location:

Summary Statistics: Min. 1.0; Mean 5.635545556805395; StDev 15.76508457582983; Valid 1778.0; Max. 99.0;

Variable Format: numeric

Notes: UNF:6:F7O+ovOwxt/7yjK1U73q6w==

Q23_16

f3825767 Location:

Summary Statistics: Mean 6.295838020247473; StDev 15.806091251588654; Max. 99.0; Min. 1.0; Valid 1778.0

Variable Format: numeric

Notes: UNF:6:AZMO68Snfxrzzil+TnmWJA==

Q23_17

f3825767 Location:

Summary Statistics: StDev 16.067371216210137; Min. 1.0; Max. 99.0; Mean 5.787964004499438; Valid 1778.0;

Variable Format: numeric

Notes: UNF:6:zIylU6mZFwbqibIROY/o4g==

Q24_1

f3825767 Location:

Summary Statistics: Max. 99.0; Valid 1778.0; Mean 7.940944881889752; Min. 1.0; StDev 21.301263753260923

Variable Format: numeric

Notes: UNF:6:bn9kQJfL5zgZwRAZVVqkMA==

Q24_2

f3825767 Location:

Summary Statistics: Min. 1.0; Mean 6.6051743532058635; StDev 17.90767343371661; Max. 99.0; Valid 1778.0;

Variable Format: numeric

Notes: UNF:6:WqRNeKflFyA57U+HVebICw==

Q24_3

f3825767 Location:

Summary Statistics: Min. 1.0; Mean 6.371766029246341; StDev 18.23224867531136; Max. 99.0; Valid 1778.0;

Variable Format: numeric

Notes: UNF:6:81HXbrKQmjTulodCexpF4A==

Q24_4

f3825767 Location:

Summary Statistics: Max. 99.0; Mean 8.027559055118115; Valid 1778.0; Min. 1.0; StDev 20.027775445899106

Variable Format: numeric

Notes: UNF:6:70KkEFpNs5llO4tEGfBr4g==

Q24_5

f3825767 Location:

Summary Statistics: Valid 1778.0; Max. 99.0; Min. 1.0; StDev 20.97877992033015; Mean 7.725534308211476

Variable Format: numeric

Notes: UNF:6:8AQBnDHxVyug7TT/TMuPcw==

Q24_6

f3825767 Location:

Summary Statistics: Min. 1.0; Mean 7.523622047244098; Valid 1778.0; Max. 99.0; StDev 20.773363803456625

Variable Format: numeric

Notes: UNF:6:vXBrcdRmx/DmlijNM2ddVg==

Q24_7

f3825767 Location:

Summary Statistics: StDev 19.488540959563775; Min. 1.0; Valid 1778.0; Max. 99.0; Mean 6.919010123734524

Variable Format: numeric

Notes: UNF:6:3bkzkTOvGFFcQa/N3qVZGg==

Q25_1

f3825767 Location:

Summary Statistics: Max. 99.0; Mean 6.018560179977507; StDev 14.86136246337797; Min. 1.0; Valid 1778.0

Variable Format: numeric

Notes: UNF:6:eh45EXpEYGX5WknZ6crbuw==

Q25_2

f3825767 Location:

Summary Statistics: Min. 1.0; StDev 17.815492613704226; Max. 99.0; Mean 6.978627671541053; Valid 1778.0;

Variable Format: numeric

Notes: UNF:6:6TlPQ0ixmH1yaEHQ7QLZVg==

Q25_3

f3825767 Location:

Summary Statistics: StDev 19.697933012033044; Mean 7.156917885264339; Valid 1778.0; Max. 99.0; Min. 1.0

Variable Format: numeric

Notes: UNF:6:L9s7DngZuXbQKhTjj41aVA==

Q25_4

f3825767 Location:

Summary Statistics: Valid 1778.0; Mean 8.379640044994366; Max. 99.0; Min. 1.0; StDev 21.783979892323657;

Variable Format: numeric

Notes: UNF:6:ZvJJG9H69UUIuy2Gw2c4sQ==

Q25_5

f3825767 Location:

Summary Statistics: Max. 99.0; Min. 1.0; StDev 20.62500261620275; Valid 1778.0; Mean 7.609111361079874

Variable Format: numeric

Notes: UNF:6:Eu+lJE1UPMkl+TOhtmf8+A==

Q26_1

f3825767 Location:

Summary Statistics: StDev 36.76111407536948; Valid 1778.0; Min. 1.0; Mean 19.83464566929132; Max. 99.0

Variable Format: numeric

Notes: UNF:6:eCpdcfx79VBz2qz5TpbHTw==

Q27

f3825767 Location:

Summary Statistics: Valid 1778.0; StDev 20.54936379499719; Max. 99.0; Mean 7.456130483689535; Min. 1.0

Variable Format: numeric

Notes: UNF:6:1Jlb3A+p194k+39KdvH0MA==

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Study1_dfm.Rdata

Notes:

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