Portfolio of Ravindu Tharuka Weerasinghe — AI Engineer and undergraduate at University of Moratuwa, specializing in small language models, MLOps, and real-world AI systems.https://rtweera.page/https://rtweera.page/projects/adaptive-multi-agent-rag/https://rtweera.page/projects/adaptive-multi-agent-rag/An in-progress production-oriented RAG system built around LangGraph agent orchestration, pgvector semantic search, Redis caching, and a full-stack React + FastAPI interface — designed to demonstrate how enterprise AI retrieval should actually be built.Sun, 10 May 2026 00:00:00 GMThttps://rtweera.page/projects/chapters-blog-backend/https://rtweera.page/projects/chapters-blog-backend/A production FastAPI backend powering the blog section of the University of Moratuwa AI Student Chapter portal — covering blog CRUD, comments, replies, likes, and dashboard analytics with Keycloak JWT authentication and MongoDB.Wed, 15 Apr 2026 00:00:00 GMThttps://rtweera.page/projects/recommender-systems/https://rtweera.page/projects/recommender-systems/A book recommendation system combining content-based filtering (TF-IDF), collaborative filtering (user similarity), and network-based recommendation (PageRank) into a hybrid architecture — with separate cold-start and warm-user routing.Mon, 23 Feb 2026 00:00:00 GMThttps://rtweera.page/projects/sem-web-ontology/https://rtweera.page/projects/sem-web-ontology/An OWL/RDF ontology modeling the AI domain — subfields, career roles, required skills, learning resources, and prerequisite relationships — stored in GraphDB and queryable via SPARQL, with a Streamlit + Ollama app for natural language exploration.Sun, 22 Feb 2026 00:00:00 GMThttps://rtweera.page/projects/diabetes-prediction/https://rtweera.page/projects/diabetes-prediction/A multiclass ML system predicting Type II diabetes risk from NHANES lab and lifestyle data, published in IEEE. Built a full pipeline with LightGBM, Optuna, MLflow, and feature ablation studies.Sun, 01 Feb 2026 00:00:00 GMThttps://rtweera.page/projects/neuro-symbolic-pc-builder/https://rtweera.page/projects/neuro-symbolic-pc-builder/A PC configuration assistant that combines a Small Language Model for natural language understanding with a Prolog-based expert system for formal hardware compatibility reasoning — bridged via Janus-SWI.Thu, 20 Nov 2025 00:00:00 GMThttps://rtweera.page/projects/ga-inventory-optimization/https://rtweera.page/projects/ga-inventory-optimization/A genetic algorithm solving the 2D bin packing problem for inventory optimization — determining how to pack items of varying dimensions and values across storage bins to maximize space utilization and stored value, implemented in Java with a Python bridge.Mon, 20 Oct 2025 00:00:00 GMThttps://rtweera.page/projects/nlp-machine-translation/https://rtweera.page/projects/nlp-machine-translation/A multi-technique machine translation pipeline for English to Sinhala — combining statistical spelling correction, LLM-based text simplification, and quantized MBART neural translation, with a Gradio interface and a Gemini-powered corpus generator.Wed, 15 Oct 2025 00:00:00 GMThttps://rtweera.page/projects/unitree-gallery-service/https://rtweera.page/projects/unitree-gallery-service/A FastAPI-based image gallery microservice built for WSO2Con — enabling live event photo uploads, responsive gallery browsing, and instant QR-code-based image sharing.Mon, 28 Jul 2025 00:00:00 GMThttps://rtweera.page/projects/fine-tune-pipeline/https://rtweera.page/projects/fine-tune-pipeline/A team-built, production-oriented fine-tuning framework covering LoRA training, inference, and evaluation for Qwen, Llama, and Mistral models — designed to run inside GitHub Actions or Jenkins with full W&B experiment tracking.Wed, 25 Jun 2025 00:00:00 GMThttps://rtweera.page/projects/choreo-docs-ai-pipeline/https://rtweera.page/projects/choreo-docs-ai-pipeline/A full AI pipeline built around WSO2 Choreo documentation — generating QA datasets with LLMs, fine-tuning Qwen SLMs with LoRA, and building a RAG-based conversational assistant. Three interconnected projects covering the complete lifecycle from raw docs to a working domain expert.Tue, 10 Jun 2025 00:00:00 GMThttps://rtweera.page/projects/ddos-classifier/https://rtweera.page/projects/ddos-classifier/A machine learning project for classifying DDoS attack traffic, comparing Logistic Regression, Autoencoders, and DBSCAN on the Kaggle DDoS dataset — with production-ready sklearn-compatible preprocessing pipelines.Mon, 07 Apr 2025 00:00:00 GMThttps://rtweera.page/projects/ballerina-code-ft/https://rtweera.page/projects/ballerina-code-ft/Research and experimentation on fine-tuning Small Language Models for Ballerina code completion — a low-resource domain-specific language for cloud-native integration with limited training data available.Wed, 02 Apr 2025 00:00:00 GMThttps://rtweera.page/projects/football-fuzzy-logic/https://rtweera.page/projects/football-fuzzy-logic/A computer vision project combining YOLOv8 object detection with fuzzy inference to improve ball detection confidence in football footage — using domain-aware rules about position, aspect ratio, and proximity to players.Sat, 28 Dec 2024 00:00:00 GMThttps://rtweera.page/projects/compfigurator/https://rtweera.page/projects/compfigurator/A rule-based expert system that recommends complete PC builds from a workload type and budget — using Experta for the knowledge engine and Streamlit for an interactive chat-style UI. Supports 11 workload types with progressive compatibility constraints.Thu, 05 Dec 2024 00:00:00 GMThttps://rtweera.page/projects/network-load-balancing-mas/https://rtweera.page/projects/network-load-balancing-mas/An agent-based simulation of decentralized network load balancing using Mesa and Pygame — where server and user agents autonomously communicate, negotiate load, and self-organize without any central coordinator.Sun, 01 Dec 2024 00:00:00 GMThttps://rtweera.page/projects/clickbait-detection/https://rtweera.page/projects/clickbait-detection/An NLP project exploring clickbait headline detection using a CNN-based supervised model and an in-progress unsupervised approach with transformer embeddings.Tue, 20 Aug 2024 00:00:00 GMThttps://rtweera.page/projects/room-occupancy-detection/https://rtweera.page/projects/room-occupancy-detection/A machine learning project predicting room occupancy from environmental sensors — with careful time-series cross-validation, SMOTE for class imbalance, model comparison across Random Forest, XGBoost, and LightGBM, and SHAP-based interpretability.Thu, 18 Jul 2024 00:00:00 GMThttps://rtweera.page/projects/sentiview-icms/https://rtweera.page/projects/sentiview-icms/A full-stack multi-channel sentiment intelligence platform built as a 2nd-year university software project. Spans an Angular 17 dashboard frontend and a FastAPI email analytics microservice with Gemini, AWS Comprehend, MongoDB, and Gmail OAuth.Thu, 18 Jul 2024 00:00:00 GMThttps://rtweera.page/projects/autochess/https://rtweera.page/projects/autochess/A physical chess board that senses human moves, computes responses with an embedded chess engine, and physically moves pieces using an XY electromagnet gantry — rated at ~2000 ELO.Thu, 20 Jul 2023 00:00:00 GMT