Яндекс Метрика
Компьютерное зрение

Vine copula (breast cancer)

Massachusetts Institute of Technology (MIT),Rey Juan Carlos University
Классификация изображений

Инновационный подход к диагностике рака груди с использованием гибких многомерных моделей зависимостей. Сочетая обучение с подкреплением и векторные представления, этот AI-алгоритм эффективно анализирует сложные медицинские данные для точной классификации патологий.

A vine copula model is a flexible high-dimensional dependence model which uses only bivariate building blocks. However, the number of possible configurations of a vine copula grows exponentially as the number of variables increases, making model selection a major challenge in development. In this work, we formulate a vine structure learning problem with both vector and reinforcement learning representation. We use neural network to find the embeddings for the best possible vine model and generate a structure. Throughout experiments on synthetic and real-world datasets, we show that our proposed approach fits the data better in terms of log-likelihood. Moreover, we demonstrate that the model is able to generate high-quality samples in a variety of applications, making it a good candidate for synthetic data generation.

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