Author

Rima Arnaout

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Open access Jul 2026

Beyond Size and Class Balance: Alpha as a New Dataset Quality Metric for Deep Learning

In deep-learning-based image classification, achieving high performance requires diverse training sets. However, the current best practice—maximizing dataset size and class balance—does not guarantee dataset diversity. We hypothesized that, for a given model architecture, performance improves by maximizing diversity mo...

Josiah D. Couch, Rima Arnaout, R. Arnaout · Bioengineering · 1 citation

#artificial intelligence Mar 2026

MARCUS: An agentic, multimodal vision-language model for cardiac diagnosis and management

MARCUS demonstrates that domain-specific visual encoders with an agentic orchestrator enable multimodal cardiac interpretation, and confers resistance to mirage reasoning, whereby vision-language models derive reasoning from unintended textual signals or hallucinated visual content.

J. O'Sullivan, M. Asadi, Lennart Elbe et al. · arXiv.org · 0 citations