Search Results for author: Josiah Couch

Found 2 papers, 0 papers with code

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

no code implementations22 Jul 2024 Josiah Couch, Ramy Arnaout, Rima Arnaout

By analyzing thousands of subsets from seven medical datasets representing ultrasound, X-ray, CT, and pathology images, we found that the best correlates of performance were not size or class balance but $A$ -- ``big alpha'' -- a set of generalized entropy measures interpreted as the effective number of image-class pairs in the dataset, after accounting for similarities among images.

Diversity Image Classification

Scaling Monte-Carlo-Based Inference on Antibody and TCR Repertoires

no code implementations19 Dec 2023 Josiah Couch, Rohit Arora, Jasper Braun, Joesph Kaplinsky, Elliot Hill, Anthony Li, Brett Altschul, Ramy Arnaout

We demonstrate that this new method enables the generation of accurate estimates for 27 models using only three expensive estimates, thereby reducing the computational cost by an order of magnitude.

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