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kyooblume/README.md

Hi, I'm Kyoka

Data Science × AI × Human Wellbeing

I am a data science student interested in building practical data and AI systems that support human health, behaviour, and better decision-making.

My long-term goal is to connect data science, machine learning, and user-centred product development to solve real-world problems.

What I do

  • Develop and evaluate AI agents
  • Analyse health and wearable data
  • Build machine learning and reinforcement-learning models
  • Create interactive dashboards and browser-based tools
  • Translate data and research into practical applications

Featured projects

Project What it demonstrates
WALTER Browser-based HRV analysis tool developed during my placement at Leeds Trinity University
Personality-aware JITAI with RL Undergraduate research using reinforcement learning to optimise behaviour-change interventions
UK Tourist Dashboard Streamlit dashboard turning tourism data into business insights

Experience

Organisation Role Experience
Archive Square Data Scientist Operations-efficiency projects: building and improving generative-AI applications and workflows, improving answer accuracy with RAG and prompt engineering, and evaluating answer quality with a 100-question evaluation set. Tech: Dify, RAG, LLM, prompt engineering, Docker, Git/GitHub, VS Code
Leeds Trinity University Junior Developer (work placement) Extended HRV research tools in an English-speaking agile team
MyStory Inc. Developer / Data Analyst Intern — small team with the CEO Contributed to the development of a healthcare application from concept to implementation, including market research, Django REST backend development, API design, health-data processing, recommendation features, and AI-assisted functionality. Separately developed a Streamlit time-series forecasting tool to make forecasting more accessible to non-technical users.
ANA Trading Co., Ltd. Data Analyst Intern (2 weeks) Analysed membership and sales data and presented business recommendations

Some internship code, data, and internal product details are kept private due to confidentiality.

Tech stack

Data Science & Machine Learning

Python · pandas · scikit-learn · XGBoost · R · Gymnasium · Stable-Baselines3

Applications & Visualisation

JavaScript · Django · Streamlit · Chart.js · Altair · HTML · CSS

Data & Product Development

SQL · Figma · GitHub Pages

My Skills

Languages

Japanese — Native
English — Working proficiency (one-year exchange and placement in the UK)

Interests

Health data science · Wearable data · Behaviour change · Reinforcement learning · AI agents · Data visualisation

📊 GitHub Stats

Popular repositories Loading

  1. personality-aware-jitai-rl personality-aware-jitai-rl Public

    Undergraduate research: personality-aware JITAI optimised with reinforcement learning (PPO) — Toda Lab, Yokohama City University

    Jupyter Notebook

  2. Leeds_ds_assessment Leeds_ds_assessment Public

    Streamlit dashboard on UK tourists' spending in Japan (Leeds Trinity University assessment)

    Python

  3. walter walter Public

    WALTER: browser-based HRV analyser for psychology students (CCTK, Leeds Trinity University placement)

    JavaScript

  4. kyooblume kyooblume Public