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Liu Zhenzhen

Liu Zhenzhen

Researcher

About Me

I am a Researcher at the Faculty of Engineering, Kitami Institute of Technology, and a member of the Text Information Processing Laboratory (TiP Lab). I received my Ph.D. in Engineering from Kitami Institute of Technology in 2023.

My research focuses on tourism informatics and natural language processing (NLP). In particular, I investigate methods to extract and analyze tourist motivations, destination focus points, and sentiment from multilingual online reviews using transformer models, machine learning, and statistical analysis. Additionally, I work on automated fake and spam review detection for e-commerce platforms and cross-lingual translation analysis. Prior to my doctoral studies, I also gained industry experience as a System Engineer in Tokyo and Hangzhou, developing software systems and AI conversational chatbots.

Research Interests

Tourism Informatics · Natural Language Processing · Sentiment & Review Analysis · Tourist Motivation & Focus Point Extraction · Spam & Fake Review Detection · Cross-Lingual NLP & Sarcasm Detection

Research Areas

  • Informatics / Intelligent informatics (Natural Language Processing)
  • Informatics / Intelligent informatics

Experience

  • Oct 2023 – Present: Researcher, Faculty of Engineering, Kitami Institute of Technology
  • Nov 2018 – Sep 2020: System Engineer, China ZheShang Bank Co., Ltd.
  • Apr 2017 – Jun 2018: System Engineer, iFocusNetwork Co., Ltd.

Education

  • 2020–2023: Ph.D. in Engineering, Kitami Institute of Technology
  • 2015–2017: Master of Science in Information Engineering, Kitami Institute of Technology
  • 2010–2014: Bachelor of Science in Information Engineering, Tianjin University of Science and Technology

Publications

Journal Articles
  • Zhenzhen Liu, Juuso Eronen, Fumito Masui, Michal Ptaszynski, “Chinese Tourist Motivations for Hokkaido, Japan: A Hybrid Approach Using Transformer Models and Statistical Methods”, Tourism and Hospitality, 6(3), 133, 2025. DOI
  • Zhenzhen Liu, Juuso Eronen, Fumito Masui, Michal Ptaszynski, “Automated evaluation of tourism motivation from Chinese tourists in Japan using transformers”, Current Issues in Tourism, pp. 1–21, 2025. DOI
  • Zhenzhen Liu, Michal Ptaszynski, Michal Karpinska, Juuso Eronen, Fumito Masui, “Initial exploration into sarcasm and irony through machine translation”, Natural Language Processing Journal, 9, 100106, 2024. DOI
  • Zhenzhen Liu, Fumito Masui, Juuso Eronen, Shun Terashita, Michal Ptaszynski, “A New Approach to Extracting Tourism Focus Points from Chinese Inbound Tourist Reviews after COVID-19”, Sustainability, 15(11), 8748, 2023. DOI
  • Juuso Eronen, Zhenzhen Liu, Michal Ptaszynski, Karol Nowakowski, Fumito Masui, “Exploring the Effects of Data Volume and Transfer-Language Choice on Transfer Learning with Application to Polish”, Electronics, May 2026. DOI
  • Juuso Eronen, Michal Ptaszynski, Tomasz Wicherkiewicz, Robert Borges, Katarzyna Janic, Zhenzhen Liu, Tanjim Mahmud, Fumito Masui, “Language Models Are Polyglots: Language Similarity Predicts Cross-Lingual Transfer Learning Performance”, Machine Learning and Knowledge Extraction, Mar 2026. DOI
Conference Proceedings
  • Zhenzhen Liu, Fumito Masui, Michal Ptaszynski, “Examination of Focus Point Extraction Method from Inbound Tourism Reviews Using N-gram Patterns and Motivation Factors of Tourists”, Information Processing Management Conference, Oct 2022.
  • 劉 真真, 桝井 文人, 寺下 俊, プタシンスキ ミハウ, “n-gram パターンと観光動機を利用したインバウンド観光レビューからのフォーカスポイント抽出手法の検討”, 観光情報学会第17回全国大会, pp. 11–12, 2021.
  • Zhenzhen Liu, Fumito Masui, Michal Ptaszynski, “Supporting Inbound Tourism in Hokkaido: Keyword Extraction and Focus Point Analysis from Spot Reviews”, Proceedings of the 2021 International Workshop on Modern Science and Technology (IWMST 2021), Oct 2021.
  • Shinshin Ryu, Fumito Masui, Michal Ptaszynski, “Detecting Spam Reviews on the Chinese Online Shopping Site TaoBao”, Proceedings of the International Workshop on Modern Science and Technology (IWMST 2016), pp. 188–195, Nov 2016.
  • 劉 真真, 桝井 文人, プタシンスキ ミハウ, “中文スパムレビュー検出のためのショッピングサイトレビュー分析”, 人工知能学会全国大会 (JSAI 2016), 2016.

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