Samuel Kalu

AI / ML Engineer
Building AI systems for document intelligence and knowledge retrieval. Focused on architectures that combine LLMs with structured knowledge.
Projects

Du-RAG

Open Source

Graph-enabled RAG system with entity extraction, deduplication, and multi-source agentic routing. Designed a memory consolidation pipeline that extracts entities and relationships from conversations and stores them as a dynamic knowledge graph for persistent context.

Python, Neo4j, LangChain, GraphRAG, Vector Stores
GitHub →

Sourcemap Africa

Active

AI-powered document verification platform for African investigative journalism. Multi-model analysis for tamper detection, origin tracing, and archive search. Built for newsrooms that need to verify documents fast.

Python, AI Agents, Multi-Model Pipeline, Vector Embeddings
sourcemap.africa →
Updates
Jun 2026

Sourcemap Africa launched - AI document verification for African newsrooms.

Jun 2026

Du-RAG v2.1: memory consolidation with dynamic entity relationship extraction.

Aug 2025

GSoC '25: Built a Communication Analysis Tool for human-AI interaction in driving simulator experiments - speaker identification and transcription modules for safety-critical analysis of multi-modal driving data.

Apr 2025

Won Nosana Web3 Hackathon 1.0 - deployed complex containers to Nosana's decentralized compute network.