Journal Articles
2023, With Marius Sältzer, Semantic temporality analysis: A computational approach to time in English and German texts, Research & Politics.
2023, With Alexander Baturo, Seeded Sequential LDA: A Semi-Supervised Algorithm for Topic-Specific Analysis of Sentences, Social Science Computer Review.
2023, With Michiko Ueda, Hajime Sueki, Emotional Distress During COVID-19 by Mental Health Conditions and Economic Vulnerability: Retrospective Analysis of Survey-Linked Twitter Data With a Semisupervised Machine Learning Algorithm, Journal of Medical Internet Research.
2022, With Elad Segev, Atsushi Tago, Discursive Diversion: Manipulation of Nuclear Threats by the Conservative Leaders in Japan and Israel, International Communication Gazette.
2022, With Elad Segev, Atsushi Tago, Could Leaders Deflect from Political Scandals? Cross-National Experiments on Diversionary Action in Israel and Japan, International Interactions.
2022, With Tobias Heidenreich, Olga Eisele, Hajo G Boomgaarden, Exploring Engagement With EU News on Facebook: The Influence of Content Characteristics, Politics and Governance.
2021, With Peter Trubowitz, The Geopolitical Threat Index: A Text-Based Computational Approach to Identifying Foreign Threats, International Studies Quarterly.
2020, Kohei Watanabe, Latent Semantic Scaling: A Semisupervised Text Analysis Technique for New Domains and Languages, Communication Methods and Measures.
2020, With Yuan Zhou, Theory-Driven Analysis of Large Corpora: Semisupervised Topic Classi cation of the UN Speeches, Social Science Computer Review.
2019, With Amy Catalinac, 日本語の量的テキスト分析 (Quantitative Text Analysis in Japanese), Waseda Institute for Advanced Study Research Bulletin.2018, An R package for the quantitative analysis of textual data, Journal of Open Source Software.
2018, Newsmap: semi-supervised approach to geographical news classification, Digital Journalism.
2017, With Tomila Lankina, ‘Russian Spring’ or ‘Spring Betrayal’? The Media as a Mirror of Putin’s Evolving Strategy in Ukraine, Europe-Asia Studies.
2017, Measuring news bias: Russia’s official news agency ITAR-TASS’s coverage of the Ukraine crisis, European Journal of Communication.
2017, The spread of the Kremlin’s narratives by a western news agency during the Ukraine crisis, Journal of International Communication.
2013, The western perspective in Yahoo! News and Google News Quantitative analysis of geographic coverage of online news, International Communication Gazette.
Conference Papers
2019, Searching for ‘submarine’ propaganda outlets: an efficient method to identify sources of false information on the web, EPSA Annual Conference, Belfast.
2018, Conspiracist propaganda: How Russia promotes anti-establishment sentiment online?, ECPR General Conference 2018, Hamburg.
2017, 機械学習を用いたヘイトスピーチの分析：Wordfishモデルによる非市民的な表現の抽出 (Analysis of hate speeches using machine learning: extraction of uncivil expressions using Wordfish models), Centre Européen d’Études Japonaises d’Alsace, France.
2016, Britain in the world: Visual analysis of international relations in the British and the Irish media before the referendum, 2016 Political Studies Association Conference, LSE.
2016, How to collect, code and analyse 200,000 news stories on Ukraine crisis, EUENGAGE Text Analysis Conference, Amsterdam.
2016, Mapping international news: Evaluation of common lexicon-based and new dictionary-based methods for geographical classification of news texts, ICA Communication Research Methods pre-conference, Fukuoka (a Best Paper Award of the pre-conference was granted).
2016, Computer-aided dictionary making: An efficient dictionary construction technique for content analysis, Proceedings of the International Conference on the Advances in Computational Analysis of Political Text, 81-87.
Working Papers
With Alexander Baturo, Seeded Sequential LDA: A Semi-supervised Algorithm for Topic-specific Analysis of Sentences.
With Marius Sältzer, Semantic Temporality Analysis: A Computational Approach to Time in English and German.
Book Chapters
2022, Kohei Watanabe, Text-as-Data, Encyclopedia of Technology & Politics, Edward Elgar Publishing.
2020, With Tomila Lankina, and Yulia Netesova, Framing, Fabricating, Leveraging Protest: How Russian State Media Manipulate Public Discontent. In Valerie Bunce, Karrie Koesel and Jessica Chen Weiss (Eds.) Citizens & the State in Authoritarian Regimes: Comparing Russia & China, Oxford University Press.
Reports
2021, With Maria Snegovaya, The Kremlin’s Social Media Influence Inside the United States: A Moving Target, Free Russia Foundation.
PhD Thesis
Supervisor: Professor Ken Benoit
Examiners: Professor Jan Kleinnijenhuis (Department of Communication Science, Vrije University, Netherlands) and Professor Terhi Rantanen (Media and Communications, LSE)
Exhibition
2013, News bias? Differences in favourability in international news reporting between New York Times and Al Jazeera English, Central European University.
Software Packages
Quanteda: Flexible and fast text analysis package in R (on CRAN)
LSX: A word embeddings-based semisupervised model for document scaling (on CRAN)
newsmap: Semisupervised Bayesian model for geographical document classification (on CRAN)
seededlda: Seeded-LDA for semisupervised topic modeling (on CRAN)
Projects
2019-2021, Communicating Security Threat: Newspaper Coverage of North Korean and Iranian Nuclear Programs
Websites
Quanteda Tutorials: Step-by-step guide on how to use Quanteda
International Newsmap: Automated classification and visualization of international news coverage
Popular Mobilization: Project on political mobilization in Russia