Welcome to Bio-RAMP Lab!

Biomedical Research in Artificial Intelligence and Machine Perception (Bio-RAMP) is a global multidisciplinary research community at the intersection of healthcare and artificial intelligence. Our goal is to provide a platform for researchers across the globe to contribute to the development and application of AI in the field of medicine. Our lab is committed to increasing the participation and engagement of researchers and communities that are currently underrepresented in this field. We believe that the diversity of perspectives and experiences will lead to more inclusive and impactful solutions.

Focus Areas

Papers

Happy, talking and doctor with a black man for healthcare, support and advice on treatment.

Under review

Afrispeech-Dialog: A Benchmark Dataset for Spontaneous English Conversations in Healthcare and Beyond

Abstract

A pan-African conversational speech dataset with 6 hours of recorded dialogue

Speech technologies are transforming interactions across various sectors, from healthcare to call centers and robots, yet their performance on African-accented conversations remains underexplored. We introduce Afrispeech-Dialog, a benchmark dataset of 50 simulated medical and non-medical African-accented English conversations, designed to evaluate automatic speech recognition (ASR) and related technologies. We assess state-of-the-art (SOTA) speaker diarization and ASR systems on long-form, accented speech, comparing their performance with native accents and discover a 10\%+ performance degradation. Additionally, we explore medical conversation summarization capabilities of large language models (LLMs) to demonstrate the impact of ASR errors on downstream medical summaries, providing insights into the challenges and opportunities for speech technologies in the Global South. Our work highlights the need for more inclusive datasets to advance conversational AI in low-resource settings.

Under Review

AfriMed-QA: A Pan-African, Multi-Specialty, Medical Question-Answering Benchmark Dataset

Abstract

A Question and Answer dataset for Tropical medicine to evaluate LLMs in the pan-African context

Recent advancements in large language model(LLM) performance on medical multiple choice question (MCQ) benchmarks have stimulated interest from healthcare providers and patients globally. Particularly in low-and middle-income countries (LMICs) facing acute physician shortages and lack of specialists, LLMs offer a potentially scalable pathway to enhance healthcare access and reduce costs. However, their effectiveness in the Global South, especially across the African continent, remains to be established. In this work, we introduce AfriMed-QA, the first large scale Pan-African English multi-specialty medical Question-Answering (QA) dataset, 15,000 questions (open and closed-ended) sourced from over 60 medical schools across 16 countries, covering 32 medical specialties. We further evaluate 30 LLMs across multiple axes including correctness and demographic bias. Our findings show significant performance variation across specialties and geographies, MCQ performance clearly lags USMLE (MedQA). We find that biomedical LLMs underperform general models and smaller edge-friendly LLMs struggle to achieve a passing score. Interestingly, human evaluations show a consistent consumer preference for LLM answers and explanations when compared with clinician answers.

Accepted

1000 African Voices: Advancing inclusive multi-speaker multi-accent speech synthesis

Abstract

the first pan-African accented English speech synthesis system able to generate speech in 75 African accents, with 1000 personas representing the rich phonological diversity across the continent

Recent advances in speech synthesis have enabled many useful applications like audio directions in Google Maps, screen readers, and automated content generation on platforms like Tik-tok. However, these systems are mostly dominated by voices sourced from data-rich geographies with personas rep- resentative of their source data. Although 3000 of the world’s languages are domiciled in Africa, African voices and personas are under-represented in these systems. As speech synthesis be- comes increasingly democratized, it is desirable to increase the representation of African English accents. We present Afro- TTS, the first pan-African accented English speech synthesis system able to generate speech in 75 African accents, with 1000 personas representing the rich phonological diversity across the continent for downstream application in Education, Public Health, and Automated Content Creation. Speaker interpola- tion retains naturalness and accentedness, enabling the creation of new voices.

Researchers

Tobi Olatunji MD

Computer Science
MD, MSc

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Working with us to advance the field of Machine Learning
for Healthcare and expand access to deep learning applications in medicine.