プージャナー パリヤワン

Pujana Paliyawan

Doctoral of Engineering in Information Science and Engineering

AI and Algorithm Engineer, Data Scientist, Research Consultant

Pujana Paliyawan holds a D.Eng. in Information Science and Engineering from Ritsumeikan University, Japan, supported by the MEXT Scholarship, and is a former Senior Researcher at Ritsumeikan University. He currently works across industry and academia as a technical and research consultant and software/algorithm engineer, specializing in AI, algorithm engineering, and intelligent systems. His work focuses on translating research into practical real-world applications, developing advanced algorithms and AI solutions spanning machine learning, deep learning, MLLMs, image processing, optimization, and data-driven systems.

Skills and Expertise: AI, Algorithm and Software Engineering

    • Extensive experience in AI and algorithm engineering, including designing algorithms, mathematical models, data-processing techniques, and intelligent systems for real-world applications.
    • Strong software engineering background, with experience designing intelligent modules and systems, data architectures, databases, data pipelines, APIs, user interfaces, data visualization, and dashboards.

Main Skills: Artificial Intelligence, Machine Learning, and Data Science

    • Artificial Intelligence: Experience developing and applying a broad range of AI approaches, including machine learning, deep learning, generative AI, LLMs, VLMs, intelligent agents, simulation, search, and optimization, for real-world applications.
    • Data Analysis: Proficient in statistical analysis, data mining, mathematical modeling, and data-driven decision making, including handling imperfect real-world data.
    • Pattern Recognition: Experience in motion detection, behavior analysis, image analysis, and affective computing.

Applications and Research: Intelligent Systems and Applied AI

    • Broad experience applying AI and algorithms to interactive systems, games, XR, health monitoring, smart environments, military/defense, and business applications.
    • Research and development experience spanning natural language processing, speech and audio analysis, motion and gesture recognition, facial expression analysis, sentiment analysis, procedural content generation, and computer vision.
    • Strong background in experimental design, user evaluation, and statistical validation for assessing system performance and user experience.

Platforms: Cross-platform Software Development

    • Experienced in software development for web, mobile (Android & iOS), and Windows platforms.
    • Proficient in Python, C#, Flutter, ReactJS, React Native, JavaScript (JS), PHP, HTML, and AJAX, with extensive hands-on programming experience predating the LLM era.
    • Capable of designing, developing, debugging, and maintaining software independently, including working effectively without reliance on AI-assisted development tools.

Interests

AI

Over 10 years of hands-on experience developing AI solutions, with expertise spanning search-, simulation-, optimization-, machine learning, deep learning, generative AI, and LLM-based systems.

Data Analytics

Strong experience in data analysis, statistical & mathematical modeling, data mining, visualization, and data-driven decision making, including working with complex and real-world datasets.

Data Science and Engineering

Hands-on experience building data pipelines, data processing systems, analytical models, and data-driven software, from data preparation and transformation to implementation and deployment.

Entertainment and Interactive Media Development

  • Extensive experience developing interactive applications, games, XR/VR systems, and intelligent interactive experiences, incorporating AI, procedural content generation, motion tracking, and user interaction technologies.

Cross-platform Application Development

Proficient in Full Stack (Web), Mobile, Windows, and Unity application development.

Business

Strong understanding of business processes, software products, digital transformation, and technology-driven business solutions, with experience translating business requirements into practical technical solutions.

Works

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Research Experience

App Development

Apps developed as learning and experimental projects across various programming languages and platforms, available on Google Play, Huawei AppGallery, Apple App Store, Microsoft Store, Mac App Store, and other platforms.

Other Interests and Hobbies

DIY electronics, sensors, solar and smart home technologies, financial markets, business and economics, photography, technology and history, and travel.

 

Records

Academic Publications

Apps on Stores

“A year spent in artificial intelligence is enough to make one believe in God.”

Alan Perlis.

AI and Technical Game Research

Video games provide a controlled environment for AI research, offering well-defined problems, reproducible experiments, and opportunities to generate large datasets through simulated gameplay. Many AI techniques have been developed or evaluated through games before being applied to broader domains. This motivated my research in technical game development and AI.

I worked at the Intelligent Computer Entertainment Lab (ICE Lab) at Ritsumeikan University, focusing on game AI, motion analysis, health assessment, and behavioral modeling. My research included AI based on Monte Carlo Tree Search (MCTS), as well as systems for analyzing player behavior and promoting improved user experience and well-being. The lab is recognized for its contributions to technical game research [kmjn.org/game-rankings].

My academic and professional involvement in this field includes:

Natural-Language Processing and HCI

Natural-Language Processing (NLP) and Human–Computer Interaction (HCI) focus on enabling natural and intuitive communication between people and intelligent systems. My experience spans language, speech, vision, motion, and other modalities to create more natural forms of human–computer interaction.

My Background: I have hands-on experience developing natural-language interfaces, text and speech processing, sentiment and emotion analysis, human motion tracking, gesture recognition, facial-expression analysis, and behavioral modeling. My work combines language and non-verbal interaction to develop intelligent and engaging user experiences.

My doctoral thesis, “Intelligent Middleware for Healthy Motion Gaming,” developed a middleware framework that enabled users to control existing Windows applications through body movements. The research introduced methods for motion segmentation and recognition, together with health monitoring and movement behavior analysis.

Beyond motion-based interaction, I have contributed to projects involving text, speech, hand gestures, facial expressions, and singing, including systems for analyzing human emotions through facial expressions, behavior, and sentiment from text and voice. More recently, my work has expanded to LLMs, multimodal AI, and intelligent agents, combining language, vision, motion, and other human signals for real-world applications.

Algorithm Engineering and Data Analytics

Algorithm Engineering and Data Analytics are central to my research and development work, with a strong foundation in mathematical modeling, statistics, algorithm design, optimization, and data analysis. I develop algorithms and analytical methods to transform complex data into measurable insights, decisions, and practical system functions.

Algorithm and Mathematical Modeling: My experience spans search and optimization algorithms, statistical and mathematical models, classification, data mining, machine learning, and deep learning. I have designed algorithms for real-world problems involving imperfect and heterogeneous data, with emphasis on systematic evaluation, statistical validation, and practical performance.

Statistical Analysis: My background includes statistical testing, experimental design, advanced statistical analysis, and quantitative evaluation. During my research career, I have guided students in designing data collection methods, selecting appropriate datasets, defining evaluation metrics, and applying statistical methods to validate research results.

Data Engineering and Analytics: I have practical experience designing databases, data pipelines, data-processing workflows, and analytical systems, working with structured and unstructured data. My experience includes SQL and database systems such as MySQL, Firebase, and IBM Db2, as well as data from applications, sensors, human behavior, health, images, text, audio, business operations, and financial markets.

Applied Data Experience: I have worked with diverse datasets including game and application logs, human motion and behavioral data, biosignals and health data, image data, text and speech, and business and financial data. This broad experience supports my ability to select appropriate mathematical, statistical, and algorithmic approaches for di

Interactive Media and Extended Reality (XR)

Interactive Media and Extended Reality (XR) encompass technologies such as virtual reality (VR), augmented reality (AR), and mixed reality (MR) that create immersive and interactive experiences by combining digital content with physical or simulated environments. My experience covers the design and development of interactive systems that integrate AI, computer vision, motion tracking, simulation, and human–computer interaction to support training, education, entertainment, health, and other real-world applications.

My research at Ritsumeikan University included VR and motion-based interactive systems, particularly applications involving health monitoring, human movement, behavioral analysis, and interactive learning. I also contributed to research and technical activities related to VR/AR applications for health, safety, training, and entertainment, including work presented at international conferences and workshops. As a Technical Program Committee member, I reviewed research in this area and served as chair of the Virtual Reality Paper Session at MIG 2021, the ACM SIGGRAPH Conference on Motion, Interaction, and Games.

More recently, my work at Bangkok University has expanded interactive media and XR research toward practical medical and defense training applications, in collaboration with hospitals, military organizations, and government agencies. Projects include VR-based medical training and assessment, motion-capture-based rehabilitation and physical assessment, CPR and emergency triage training using VR and LLMs, VR/AR military training, and drone pilot training. These projects combine XR with AI, multimodal learning, motion analysis, and simulation to create realistic and measurable training environments.

My experience therefore spans the full development cycle of interactive and XR systems, from concept and interaction design through simulation, AI integration, algorithm development, implementation, and evaluation, with a focus on applying immersive technologies to practical real-world problems.

Health Monitoring and Behavioral Analysis

Health Monitoring and Behavioral Analysis have been a major focus of my research, combining AI, data analytics, mathematical and statistical modeling, motion tracking, and interactive systems to understand human behavior and assess physical and mental well-being.

My master’s thesis, “Office Worker Syndrome Monitoring Using Kinect,” developed an intelligent health monitoring system for office workers who spend extended periods at computers. The system combined motion tracking, data-mining classification, mathematical models, and behavioral analysis to detect prolonged sitting and identify potentially unhealthy postures. I developed algorithms for health-risk assessment, health-data visualization, and automated health summary reports, together with a microcontroller-based health monitoring assistant. The work was presented at international conferences and featured on the ScienceTech program on ThaiPBS TV in 2014.

My subsequent research expanded from individual health monitoring to behavioral analysis, games for health, and intelligent interactive systems. At the ICE Lab, a half of my publications were related to using games and interactive media to promote health and well-being. This work explored applications including depression, dementia, physical activity, movement behavior, and assessment of driving abilities in post-stroke patients, including research conducted in collaboration with hospitals.

More recently, this research direction has expanded into VR-based health assessment, rehabilitation, medical training, and multimodal behavioral analysis. By combining motion, physiological and behavioral data, AI, and immersive technologies, I develop systems that can support health assessment, training, rehabilitation, and evidence-based understanding of human behavior.

Graphic Design and Arts

Graphic Design, Creative Technology, and Smart Environments have been part of my technical background since before I began specializing in programming. I started developing skills in computer graphics, animation, web design, video editing, and multimedia during school and participated in national competitions in Flash animation, video production, and multimedia development. In 2007, I received a scholarship as the 1st Runner-up in the “YM Academic Competition 2007: Creation of Music Video for the Songs Composed by His Majesty King Bhumibol Adulyadej” for an animated music video created with Flash 8.

I continue to apply these creative skills in user interface design, visual communication, digital media, photography, video and audio production, and interactive application development. I have created graphics and promotional materials for software projects and websites, and have experience with tools including Adobe Photoshop, Premiere Pro, and Audition. My background in visual design complements my technical work by helping me approach software and interactive systems from both engineering and user-experience perspectives.

Beyond software, I have a strong interest in DIY electronics, sensors, embedded devices, and smart environments. I enjoy studying and experimenting with sensors, measurement devices, microcontrollers, and practical tools for monitoring and automating physical environments. This interest has also supported my research and development work involving health monitoring, motion tracking, environmental sensing, and intelligent interactive systems.

I am particularly interested in combining art, engineering, AI, sensing, and human–computer interaction to create practical and engaging systems. I believe innovative technology benefits from both technical depth and creative thinking, especially when developing products and interactive experiences that must be understandable, intuitive, and meaningful to users.

Business and Investment

Business, Investment, and Financial Engineering complement my technical background and provide a foundation for understanding how technology, data, and intelligent systems create practical business value. My academic background spans Business Administration, Science, and Engineering, allowing me to approach problems from both business and technical perspectives.

I hold a Bachelor of Business Administration (BBA) in Business Information Systems (BIS) from Assumption University of Thailand, where I developed a strong foundation in business processes, finance, accounting, marketing, information systems, e-commerce, and data analysis. My studies emphasized the use of information technology and data to support business operations, decision-making, and optimization.

My interest in investment developed alongside my interest in business and technology. Rather than approaching investment primarily as a quantitative problem, I am particularly interested in fundamental analysis and understanding the factors that drive markets. This includes studying company fundamentals, financial statements, industries, macroeconomics, economic conditions, government and monetary policies, geopolitical factors, and market psychology. I find the interaction between economic systems, policy decisions, business performance, and human behavior especially interesting.

This is somewhat different from my technical work, where I naturally enjoy mathematics, statistics, algorithms, and systematic analytical methods. In investment, I am more interested in understanding the broader context behind the numbers—why businesses perform differently, how economic and policy environments affect markets, and how investor behavior influences prices.

Together with my engineering and data-science background, this business and investment perspective helps me connect technical solutions with business processes, economic objectives, financial considerations, and real-world decision-making. I am particularly interested in the intersection of business, economics, finance, technology, AI, and data, where multidisciplinary understanding can lead to more effective and practical solutions.

“We must design for the way people behave, not for how we would wish them to behave.”

Donald A. Norman

Familiar Areas in Computer Science

Artificial Intelligence (AI), Machine Learning, Deep Learning, Generative AI, Large Language Models (LLMs), Vision-Language Models (VLMs), Intelligent Agents, Affective Computing, Behavioral Analysis & Detection, Reinforcement Learning, Search & Optimization Algorithms, Game Trees (A*, MCTS), Evolutionary Algorithms, Fuzzy Logic, Graph Theory, Mathematical & Statistical Modeling, Information Theory (Entropy & Mutual Information), Data Mining, Image Processing, Computer Vision & Optical Flow, Motion Analysis & Tracking, Temporal Segmentation, Natural Language Processing (Sentiment Analysis, Word2Vec), Procedural Content Generation, Health Monitoring & Assessment, Human–Computer Interaction (HCI), UX Design & Evaluation, Multimodal Interaction, Virtual Reality (VR), Augmented Reality (AR), Mixed Reality (MR), and Extended Reality (XR).

Programming

Languages: C# (WPF, WinForms, UWP, Unity), Java, JavaScript, PHP, Ajax, Python, C, C++, Flutter and Dart, React Native, ReactJS

Types: Cross-platform programming, Dynamic programming, Microcontroller programming (Arduino, Raspberry Pi), OOP, Web programming & Full Stack development

Data Analysis (Statistics + Data Mining)

Ad-hoc analysis, Anomaly detection, Association Rule, Classification, Clustering, Consistency Analysis, Feature Projection (PCA), Feature Selection, Parametric & Non-parametric Statistics, Repeated Measures, Regression, Similarity Measurement & DTW, Time Series Forecasting, Visualization

Database Technology

Operational Database, Data Warehousing, OLAP (MySQL, DB2) XML Database (XML, XPath, XQuery, SQL/XML), Firebase

Programming languages and technology used in my apps on stores

Distribution Platforms

Contact

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