Research Papers

My published research, conference papers, and academic work

LexAfriq: A Multimodal AI System for Early Dyslexia Screening in African Classrooms
Thesis

LexAfriq: A Multimodal AI System for Early Dyslexia Screening in African Classrooms

2024-05-17
Grace Aliko, Yaw Mensah, Efua Osei

We present LexAfriq, a mobile-first dyslexia screening system designed for low-resource African contexts. The tool leverages multimodal machine learning — combining handwriting analysis, eye tracking, and gamified cognitive tasks — to identify early signs of dyslexia in children without the need for expensive equipment or clinical supervision. Evaluated on simulated classroom data, LexAfriq achieves high accuracy while maintaining accessibility and child-friendly design. This work contributes a context-aware framework for equitable AI deployment in education.

Multimodal LearningDyslexiaLow-Resource NLPEducation AISocial Impact
Retrieval-Augmented Question Answering over Ghanaian Public Health Policies

Retrieval-Augmented Question Answering over Ghanaian Public Health Policies

2025-05-20
Grace Aliko

This report presents a Retrieval-Augmented Generation (RAG) pipeline for answering questions grounded in Ghana’s Ministry of Health policy documents. Using 31 real-world PDFs, we demonstrate that combining dense retrieval with a flan-T5 generator improves factual accuracy by 33% and eliminates hallucinations compared to baseline language models.

RAGInformation RetrievalPublic HealthLow-Resource NLP