Concordance based Survival Cobra with regression type weak learners
Machine Learning
2022-10-12 v3 Artificial Intelligence
Machine Learning
Quantitative Methods
Computation
Abstract
In this paper, we predict conditional survival functions through a combined regression strategy. We take weak learners as different random survival trees. We propose to maximize concordance in the right-censored set up to find the optimal parameters. We explore two approaches, a usual survival cobra and a novel weighted predictor based on the concordance index. Our proposed formulations use two different norms, say, Max-norm and Frobenius norm, to find a proximity set of predictions from query points in the test dataset. We illustrate our algorithms through three different real-life dataset implementations.
Cite
@article{arxiv.2209.11919,
title = {Concordance based Survival Cobra with regression type weak learners},
author = {Rahul Goswami and Arabin Kumar Dey},
journal= {arXiv preprint arXiv:2209.11919},
year = {2022}
}