Robust Deep Multi-task Learning Framework for Cancer Survival Analysis

Utilizing genomic characterizations and clinical information of patients across different cancer types, Multi-task Learning (MTL) based cancer survival analysis methods achieve good generalization performance and become prevalent. However, due to the high dimensionality and scarcity of the genomic sample set, as well as the inaccuracy of clinical data, the existing MTL-based survival analysis methods are limited to adopt the traditional statistical learning methods. The deep Multi-task Learning schema for cancer survival analysis has been less explored. To fill this gap, this paper proposes a novel robust deep MTL framework for cancer survival analysis. The proposed deep MTL framework is capable of handling low sample sized data with high dimension. Besides, the framework is robust to class-imbalance and task-imbalance of the cancer survival data. Experiments conducted on The Cancer Genome Atlas data sets validate the superiority of our deep MTL framework.