Open ENA について

A small team. An open horizon.

Open ENA brings together learning science, quantitative ethnography, artificial intelligence, and educational technology.

We are building a transparent and approachable path into Epistemic Network Analysis—one where methods, interface decisions, and future capabilities can be inspected rather than hidden.

Why open

Openness is more than access.

It means making the path from evidence to interpretation visible: what the model receives, what the computation does, what the figure shows, and what it cannot claim.

目的と約束

Open ENA は教育と研究を目的とする非商用プラットフォームであり、永久に無料で提供します。

Explore Open ENA

The team

A shared commitment to understandable research tools.
Portrait of Dr. Peter HU Dongpin

Dr. Peter HU Dongpin

The Education University of Hong Kong

Educational researcher · Application developer

His work spans technology-enhanced learning, learning analytics, artificial intelligence in education, network analysis, and content and language integrated learning.

EdUHK profile
Portrait of Ludwig Jianxing Yu

Ludwig Jianxing Yu

3D ENA Research Group · Hong Kong

ENA variants · Dimensionality-reduction algorithms

He has played a pioneering role in advancing ENA variants such as 3D ENA and dimensionality-reduction algorithms for ENA. As the key developer of 3D ENA 1.0, he combines computer science and psychology to develop interactive research tools.

3D ENA team profile
Portrait of Prof. Sandy TU Yun-Fang

Prof. Sandy TU Yun-Fang

National Taiwan University of Science and Technology

Assistant Professor · Graduate Institute of Digital Learning and Education

Her work spans artificial intelligence in digital learning, cognitive and social networks, data literacy, data visualization, and graph analysis.

Taiwan Tech profile
Portrait of Ms. Shirleen XU Qiaolin

Ms. Shirleen XU Qiaolin

Meredith College, North Carolina, USA

Open ENA team

A member of the Open ENA team affiliated with Meredith College, North Carolina, USA.

Project publications

Selected work across three-dimensional ENA, data literacy, and the development of open, web-based analysis tools.
Project cover artwork showing JavaScript syntax and a prominent JS chip connecting a smoked-glass development environment to a browser-based epistemic network tool

Forthcoming conference paper · 2026

Design and development from rENA to jENA: Accelerating the creation of web-based Open ENA tools

Hu, D., Hamilton, E., Tu, Y. F., & Xu, Q. (2026, November). Design and development from rENA to jENA: Accelerating the creation of web-based Open ENA tools. [Conference paper]. International Conference on Quantitative Ethnography.

ICQE 2026 · Publication details forthcoming
Project cover artwork showing a large smoked-glass code editor and an overlapping browser-based epistemic network preview

Journal article · 2025

Effects on the learning achievement, approaches to learning, and multi-stage reflection quality of students with different levels of digital self-efficacy in a data literacy course: An ARCS-based self-reflective online learning model

Tu, Y. F., Hwang, G. J., & Hu, D. (2025). Effects on the learning achievement, approaches to learning, and multi-stage reflection quality of students with different levels of digital self-efficacy in a data literacy course: An ARCS-based self-reflective online learning model. Computers & Education, 238, 105397. https://doi.org/10.1016/j.compedu.2025.105397

View journal article
Project cover artwork showing a curated three-dimensional epistemic network suspended inside a transparent glass coordinate volume

Conference paper · 2024

Development of ENA 3D: A tool for epistemic network analysis in three-dimensional space

Yu, J., Hu, D., & Wang, C. H. (2024). Development of ENA 3D: A tool for epistemic network analysis in three-dimensional space. In Y. J. Kim & Z. Swiecki (Eds.), Advances in quantitative ethnography (Communications in Computer and Information Science, Vol. 2278, pp. 152–165). Springer. https://doi.org/10.1007/978-3-031-76335-9_11

View conference paper

学術的貢献への謝辞

Open ENA は、Quantitative Ethnography (QE) と Epistemic Network Analysis (ENA) の理論および方法論に関する研究に基づいています。QE、ENA、webENA ツールの基盤を築き、その継続的な発展に貢献してきた University of Wisconsin–Madison、David Williamson Shaffer 教授、ならびに Wisconsin Center for Education Research に所属する Epistemic Analytics Lab の研究者、ソフトウェア開発者、協力者の皆様に、深く感謝いたします。

QE と ENA の理論的基盤

QE は、人間の活動をその文脈の中で質的に理解することと、量的分析を結び付けます。 (Shaffer, 2017)

ENA は、意味のある文脈の中でコーディングされた要素が共起するパターンを分析して関係のネットワークを構築し、その可視化と統計的比較を可能にします。 (Shaffer et al., 2016)

Open ENA はこれらの研究に基づき、コーディングされたデータ、モデル設定、ネットワーク比較をブラウザー上の研究ワークフローとしてまとめています。研究者は、研究上の問い、コーディングの根拠、元の質的資料を踏まえて結果を解釈する必要があります。 (Shaffer & Ruis, 2017)

インターフェースデザインの出典:webENA

Open ENA チームは、本プラットフォームの初期のインターフェースの外観とレイアウトを定める際に、webENA ツールを使用し、参考にしました。この初期のインターフェースの参考元が、米国ウィスコンシン州マディソン(Madison, Wisconsin, USA)の元の ENA 研究チームと、その webENA のデザインにあることを明示します。

ENA のネットワーク可視化には、視覚的なデザインと解釈に関する研究も生かされています。 (Tan et al., 2022)

Open ENA は、Open ENA チームが独立して維持・管理するプラットフォームです。

基礎となる参考文献

  • Shaffer, D. W. (2017). Quantitative ethnography. Cathcart Press. https://www.quantitativeethnography.org/
  • Shaffer, D. W., Collier, W., & Ruis, A. R. (2016). A tutorial on epistemic network analysis: Analyzing the structure of connections in cognitive, social, and interaction data. Journal of Learning Analytics, 3(3), 9–45. https://doi.org/10.18608/jla.2016.33.3
  • Shaffer, D. W., & Ruis, A. R. (2017). Epistemic network analysis: A worked example of theory-based learning analytics. In C. Lang, G. Siemens, A. F. Wise, & D. Gašević (Eds.), Handbook of learning analytics (pp. 175–187). Society for Learning Analytics Research. https://doi.org/10.18608/hla17.015
  • Tan, Y., Hinojosa, C., Marquart, C., Ruis, A. R., & Shaffer, D. W. (2022). Epistemic network analysis visualization. In B. Wasson & S. Zörgő (Eds.), Advances in quantitative ethnography (pp. 129–143). Springer. https://doi.org/10.1007/978-3-030-93859-8_9