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Lyu Zeyu

Section

Graduate School of Arts and Letters

Job title

Associate Professor

Degree

博士（文学）（東北大学）
修士（文学）（東北大学）

researchmap

https://researchmap.jp/lyuzeyu

J-GLOBAL ID

202001006901503952

e-Rad No.

30966312

ORCID

https://orcid.org/0000-0002-4665-9658

Research History 2

2023/04 - Present

Tohoku University　Graduate School of Arts and Letters　Associate Professor
2022/04 - 2023/04

The University of Tokyo　Institute of Social Science

Education 3

Tohoku University　Graduate School of Arts and Letters

2019/04 - 2022/03
Tohoku University　Graduate School of Arts and Letters

2017/04 - 2019/03
Northeastern University(China)　Journalism

2012/09 - 2016/06

Research Areas 2

Humanities & social sciences / Sociology /
Humanities & social sciences / Library/information science, humanistic/social informatics /

Awards 1

東北大学総長賞

2022/03　東北大学

Papers 9

Breaking the Spiral of Silence? Investigating the Influence of Opinion Reversal Events on Opinion Expression on Social Media

LYU ZEYU, Hiroki Takikawa, Takuya Shimokubo

2025/08/02

DOI： 10.31235/osf.io/9hvgf_v1 　
From ABM to GABM:How Generative Al is Reshaping Social Simulation Peer-reviewed

Wang Zhichao, Zeyu Lyu

Journal of Intelligent Society　4　(2)　138-157　2025/04
Cross-cutting interaction, inter-party hostility, and partisan identity: Analysis of offensive speech in social media Peer-reviewed

ZEYU LYU

New Media & Society　2025/02

DOI： 10.1177/14614448231180654 　
Digitization of weather records of Seungjeongwon Ilgi: A historical weather dynamics dataset of the Korean Peninsula in 1623–1910 Peer-reviewed

Zeyu Lyu, Kohei Ichikawa, Yongchao Cheng, Hisashi Hayakawa, Yukiko Kawamoto

Geoscience Data Journal　2023/10/05
Publisher: Wiley
DOI： 10.1002/gdj3.227 　

ISSN： 2049-6060

eISSN： 2049-6060

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Abstract Historical weather records from Europe indicate that the Earth experienced substantial climate variability, which caused, for instance, the Little Ice Age and the global crisis in the period between the 14th and 19th centuries. However, it is still unclear how global this climate variability was because of the scarce meteorological data availability in other regions including East Asia, especially around the 17th century. In this context, Seungjeongwon Ilgi, a daily record of the Royal Secretariat of the Joseon Dynasty of Korea, is a precious source of historical meteorological records for the Korean Peninsula, as it covers 288 years of weather observations made during 1623–1910. We used the digital database of Seungjeongwon Ilgi to construct a machine‐readable weather condition dataset. To this end, we extracted valid weather information from the original weather description text and compiled them into pre‐defined weather categories. Additionally, we attempted to improve the usability of dataset by converting the reported dates in the traditional calendar system to those in the Gregorian calendar. Finally, we outlined promising implications of this dataset for meteorological and climatological studies, while describing the limitations of the dataset. Overall, future studies focusing on the climate and weather of the past could use this meteorological database for investigating long‐term climate variability. Our datasets are publicly available at 10.5281/zenodo.8382243.
Media framing and expression of anti-China sentiment in COVID-19-related news discourse: An analysis using deep learning methods Peer-reviewed

ZEYU LYU

Heliyon　e10419　2022/08

DOI： 10.1016/J.HELIYON.2022.E10419 　
Disparity and Dynamics of Social Distancing Behaviors in Japan: An Investigation of Mobile Phone Mobility Data Peer-reviewed

Zeyu Lyu, Hiroki Takikawa

JMIR Medical Informatics　10　(3)　e31557-e31557　2022/03
Publisher: JMIR Publications Inc.
DOI： 10.2196/31557 　

eISSN： 2291-9694

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Background The availability of large-scale and fine-grained aggregated mobility data has allowed researchers to observe the dynamics of social distancing behaviors at high spatial and temporal resolutions. Despite the increasing attention paid to this research agenda, limited studies have focused on the demographic factors related to mobility, and the dynamics of social distancing behaviors have not been fully investigated. Objective This study aims to assist in designing and implementing public health policies by exploring how social distancing behaviors varied among various demographic groups over time. Methods We combined several data sources, including mobile tracking mobility data and geographical statistics, to estimate the visiting population of entertainment venues across demographic groups, which can be considered the proxy of social distancing behaviors. Next, we used time series analysis methods to investigate how voluntary and policy-induced social distancing behaviors shifted over time across demographic groups. Results Our findings demonstrate distinct patterns of social distancing behaviors and their dynamics across age groups. On the one hand, although entertainment venues’ population comprises mainly individuals aged 20-40 years, a more significant proportion of the youth has adopted social distancing behaviors and complied with policy implementations compared to older age groups. From this perspective, the increasing contribution to infections by the youth should be more likely to be attributed to their number rather than their violation of social distancing behaviors. On the other hand, although risk perception and self-restriction recommendations can induce social distancing behaviors, their impact and effectiveness appear to be largely weakened during Japan’s second state of emergency. Conclusions This study provides a timely reference for policymakers about the current situation on how different demographic groups adopt social distancing behaviors over time. On the one hand, the age-dependent disparity requires more nuanced and targeted mitigation strategies to increase the intention of elderly individuals to adopt mobility restriction behaviors. On the other hand, considering that the effectiveness of policy implementations requesting social distancing behaviors appears to decline over time, in extreme cases, the government should consider imposing stricter social distancing interventions, as they are necessary to promote social distancing behaviors and mitigate the transmission of COVID-19.
Trust, Risk Perception, and COVID-19 Infections: Evidence from Multilevel Analyses of Combined Original Dataset in China Peer-reviewed

Maoxin Ye, Zeyu Lyu

Social Science & Medicine　265　113517-113517　2020/11
Publisher: Elsevier {BV}
DOI： 10.1016/j.socscimed.2020.113517 　

ISSN： 0277-9536
Ideological and Behavioral Perspectives on Political Polarization: Evidence from Japan Peer-reviewed

ZEYU LYU

理論と方法　35　(2)　170-183　2020
Towards an Understanding of Online Extremism in Japan Peer-reviewed

ZEYU LYU

IEEE/WIC/ACM INTERNATIONAL CONFERENCE ON WEB INTELLIGENCE WORKSHOPS (WI COMPANION)　7-13　2019/10

DOI： 10.1145/3358695.3360922

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Misc. 4

Xから浮かび上がる東京2020パラリンピック競技大会と障害者への意識～計算社会科学におけるソーシャルメディア分析技術の応用～

下窪拓也, 呂沢宇, 永吉希久子, 瀧川裕貴, 渡辺誓司, 中村美子

放送研究と調査　2024/09
自然言語処理の社会科学における応用

呂沢宇

社会と調査 = Advances in social research / 社会調査士資格認定機構編　(32)　116-123　2024/03
Publisher: 東京 : 社会調査士資格認定機構 ; 2008-
ISSN： 2188-8450
Computational Social Science Approach to Social Media Analysis:Topic Model Analysis of Twitter Posts on Prime Minister Abe Shinzo from January to His Resignation

2023/04
Computational Social Science Approach to Social Media Analysis:Sentiment Analysis of Twitter Posts on Prime Minister Abe Shinzo from January 2020 to His Resignation

2023/03

Books and Other Publications 2

Sociological Foundations of Computational Social Science

Zeyu Lyu, Kikuko Nagayoshi, Hiroki Takikawa

Springer　2024/04

ISBN: 9789819994311
パンデミックと社会科学ーポストコロナから見えるもの

瀧川裕貴, 呂沢宇, 稲垣佑典, 中井豊, 常松淳, 阪本拓人, 大林真也

勁草書房　2024/02

ISBN: 9784326303373

Presentations 23

The Impact of the COVID-19 Pandemic on Activity Space Segregation in Tokyo

Hiroki Takikawa, Zeyu Lyu, Chenchen Sun, Yuya Shibuya, Yuan Liao, Yoshihide Sekimoto

The RC55 Intermediate Conference on Social Indicator　2024/06
Happiness is not Mutual: Exploring Differences in the Perception of Well-being with Words-association Network

Zeyu Lyu, Zhemeng Xie, Aguru Ishibashi, Sachiko Yasuda, Takaharu Saito, Hiroki Takikawa

The RC55 Intermediate Conference on Social Indicator　2024/06
Leveraging Large Language Models to Understand the Opinion of Polarization Invited

ZEYU LYU

2024/02/18
大規模言語モデルの心理学における応用 Invited

呂沢宇

日本理論心理学会第69回大会　2023/11/25
Semantic representation of well-being and ill-being

2023/10/09
Exploring multi-dimensional concept of well-being thorough geometry of culture approach

Hiroki Takikawa, Zeyu Lyu, Zhemeng Xie, Takaharu Saito, Aguru Ishibashi

International Conference on Computational Social Science　2023/07/20
How Demographic Characteristics Relate to Disparities and Dynamics of Mobility Patterns during COVID-19: Analysis of Individual-Level Mobility Traces Data in Tokyo

Zeyu Lyu, Hiroki Takikawa, James N. Ito

The 15th Annual Conference of the International Network of Analytical Sociologists　2023/06/09
Cross-Cutting Interaction, Inter-Party Hostility, and Partisan Identity: Analysis of Affective Polarization in Social Media

Zeyu Lyu

Annual Meeting of the American Sociological Association　2022/08
Differences in response to behavior restriction policies under the COVID-19 epidemic in Japan in terms of gender, age group, and income level of the residence.

Hiroki Takikawa, Zeyu Lyu

Annual Meeting of the American Sociological Association　2022/08
Cross-Cutting Interaction, Out-Group Hostility, and Partisan Identity: Investigation of Affective Polarization on Social Media

Zeyu Lyu

2022 International Conference on Computational Social Science　2022/07
Cross-Cutting Interaction, Out-Group Hostility, and Partisan Identity: Investigation of Affective Polarization on Social Media

Zeyu Lyu

CSSJ2022　2022/03/01
Anti-China sentiments during the COVID-19 pandemic: An analysis using deep learning methods

Zeyu Lyu, Hiroki Takikawa

International Conference on Computational Social Science (IC2S2 2021)　2021/07
The relationship between gender, age, and occupation and adherence with restriction measures during the COVID-19 pandemic: An investigation of mobile phone mobility data

Zeyu Lyu, Hiroki Takikawa

International Conference on Computational Social Science (IC2S2 2021)　2021/07
Effects of family and social interaction on mental well-being in populations under social distancing restrictions during the COVID-19 pandemic

Hiroki Takikawa, Lyu Zeyu, Yuske Inagaki, Yutaka Nakai, Jun Tsunematsu, Takuto Sakamoto, Shinya Obayashi

International Network of Analytical Sociologists 13th Annual Conference　2021/05
Sensing community and individual psychological states during COVID-19 in China: Estimation method based on social media data and deep learning

Zeyu Lyu, Hiroki Takikawa

International Network of Analytical Sociologists 13th Annual Conference　2021/05
ディープラーニングによるセンチメント分析の社会科学における応用

瀧川裕貴, 呂沢宇

日本選挙学会　2021/05
The Relationship between Gender, Age, and Occupation and Adherence with Restriction Measures during the COVID-19 Pandemic: An Investigation of Mobile Phone Mobility Data

Zeyu Lyu, Hiroki Takikawa

CSSJ2021　2021/03
新型コロナウイルス感染症流行下における感情ダイナミクスの経験サンプリング法に基づく検討

瀧川裕貴, 呂沢宇, 中井豊, 常松淳, 阪本拓人, 大林真也

日本社会学会　2020/10
Inequality in the Academic Attention of Social Science Research

Zeyu Lyu

International Computational Humanities and Social Sciences　2020/02
Towards an Understanding of Online Extremism in Japan

Zeyu Lyu

IEEE/WIC/ACM International Conference on Web Intelligence　2019/10
Japanese Language Schools as Alternative Routes to the Labor Market in Japan

Yoshimichi Sato, Zeyu Lyu

The Annual Meeting of the American Sociological Association　2019/08
Computation Approach for Investigating Political Polarization Evidence from Ideological Stance and Interaction Behaviors in Japanese Twitter

Zeyu Lyu

The 5th East Asian Conference for Young Sociologists　2019/02
Political Polarization on Japanese Twitter: Estimating Ideology with Bayesian Ideal Points Estimation

Zeyu Lyu

Graduate Conference in Japanese Studies 2018　2018/12

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Research Projects 6

移動ビッグデータを用いた社会的空間隔離の解明

呂沢宇

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究

Institution: 東北大学

2025/04/01 - 2028/03/31
ビッグデータを用いた社会秩序問題の解明－計算社会秩序論の創成－

佐藤嘉倫, 呂沢宇, 小田中悠, 瀧川裕貴

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 挑戦的研究(萌芽)

Institution: 京都先端科学大学

2024/06/28 - 2026/03/31
動的多細胞コミュニティの数理社会解析

加藤晋, 呂沢宇, 図斎大, 澤亮治, 五十嵐彰

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 学術変革領域研究(B)

Institution: 東京大学

2022/05/20 - 2025/03/31
Investigation of Opinion Polarization in Online Communication: Towards an Integration of Explanation and Prediction

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up

Category: Grant-in-Aid for Research Activity Start-up

Institution: The University of Tokyo

2022/08 - 2024/03
Investigating the mechanism political polarization on social media

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows

Category: Grant-in-Aid for JSPS Fellows

Institution: Tohoku University

2020/04 - 2022/03
Sentiment analysis on social media: Combining natural language processing and network analysis to examine how social media shape opinion dynamics

Offer Organization: 東北大学学際高等研究教育院

Institution: 学際高等研究教育院

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Other 6

研究協力者: 計算社会科学の社会学的基盤の構築
東北大学人工知能エレクトロニクス卓越大学院プログラム
東北大学学際高等研究教育院
研究協力者：ビッグデータ分析と実験の統合によるオンライン社会における場のダイナミクスの解析
リサーチアシスタント：天文と古典学
リサーチアシスタント: パンデミックに備える社会的データ収集枠組みの構築と数理モデルによるネットワーク介入の有効性評価

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