Research Portfolio

Tiroshan
Madushanka, Ph.D.

A researcher and educator passionate about Artificial Intelligence, Knowledge Graphs, and Semantic Web technologies. Currently exploring the frontiers of machine learning and knowledge representation.

Lecturer • UoK • SL Technical Consultant • Arc75 • USA | CA Ph.D. • SOKENDAI • JP
Dr. Tiroshan Madushanka

Research & Vision

My research journey centers on advancing the intersection of artificial intelligence and knowledge representation. I am particularly fascinated by how machines can better understand, reason with, and generate knowledge through sophisticated graph structures and semantic understanding.

At the National Institute of Informatics in Japan, I work on developing novel approaches for knowledge graph embeddings, focusing on negative sampling strategies that improve representation learning. My doctoral research introduced innovative methods like MDNCaching and TuckerDNCaching.

As a lecturer at the University of Kelaniya, I am committed to nurturing the next generation of computer scientists, sharing my passion for programming, software engineering, and cloud technologies.

Research Interests

  • Semantic Web & Knowledge Engineering
  • Knowledge Graph Representation Learning
  • Artificial Intelligence & Machine Learning
  • Blockchain & Decentralized Systems
  • Agentic AI & Autonomous Systems
  • Software Architecture & Scalable Systems

Selected Publications

2024
Conference

Text-KG Distill: Textual Knowledge Distillation for Enhanced KG Embeddings

Madushanka, T., & Ichise, R.

Int'l Conference on AI x Data & Knowledge Engineering (AIxDKE)

2024
Journal

Blockchain for Vehicle Registration, Transferring and Management in Sri Lanka

Malintha, C., Diyasena, D., & Madushanka, T.

Engineering and Technology Quarterly Reviews, 7(1), 56-65

2024
Preprint

Negative Sampling in Knowledge Graph Representation Learning: A Review

Madushanka, T., & Ichise, R.

arXiv:2402.19195

2024
Preprint

SecureRights: A Blockchain-Powered Trusted DRM Framework

Madushanka, T., Kumara, D.S., & Rathnaweera, A.A.

arXiv:2403.06094

2023
Journal

TuckerDNCaching: High-quality Negative Sampling with Tucker Decomposition

Madushanka, T., & Ichise, R.

Journal of Intelligent Information Systems, 61, 739-763

2022
Conference

MDNCaching: A Strategy to Generate Quality Negatives for KG Embedding

Madushanka, T., & Ichise, R.

Int'l Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems

2021
Conference

A Novel Anomaly Detection Approach to Secure APIs from Cyberattacks

Ifthikar, A., et al., Madushanka, T., & Hettiarachchi, S.

SGAI Int'l Conference on AI and Cybersecurity

2020
Conference

Impact of Metacognition and Age Group on Video Game Interface Design

Harischandra, N.N., Jayakody, L.A., Madushanka, T., & Madusanka, T.

Int'l Research Conference on Smart Computing and Systems Engineering

2015
Journal

Customer Churn Prediction: A Cognitive Approach

Senanayake, D., Muthugama, L., Mendis, L., & Madushanka, T.

Int'l Journal of Computer and Information Engineering, 9(3), 767-773

Education

2022 — 2025

Doctor of Philosophy

The Graduate University for Advanced Studies (SOKENDAI), Japan

Artificial Intelligence and Informatics

2020 — 2022

Master of Informatics

The Graduate University for Advanced Studies (SOKENDAI), Japan

AI and Informatics • JEES Scholarship

2010 — 2015

B.Sc. Engineering (Honours)

University of Moratuwa, Sri Lanka

Computer Science & Engineering • GPA 3.58/4.2

Experience

2018 — Present

Lecturer

University of Kelaniya

Sri Lanka

2018 — Present

Lead Technical Engineer

Stealth AI Startup

USA / CA(Remote)

2021 — 2025

Research Assistant

National Institute of Informatics

Tokyo, Japan

2017 — 2018

Senior Software Engineer

Zone 24x7 Private Limited

USA, Sri Lanka

2015 — 2017

Software Engineer

Zone 24x7 Private Limited

USA, Sri Lanka

2013 — 2014

Associate Software Engineer

Omobio Private Limited

Sri Lanka

Peer Review

2025

ECML-PKDD

Reviewer

2025

IJCAI

Reviewer

2025

ICSC

Reviewer

2024

EKAW

Reviewer

2023

ISWC

Reviewer

Let's Connect

tiroshanm@gmail.com tiroshanm@kln.ac.lk