Papers › Learning Survival Distribution with Implicit Survival Function

Learning Survival Distribution with Implicit Survival Function

24 May 2023arXiv:2305.14655archive 2025-07-28

Yu Ling, Weimin Tan, Bo Yan

Survival analysis aims at modeling the relationship between covariates and event occurrence with some untracked (censored) samples. In implementation, existing methods model the survival distribution with strong assumptions or in a discrete time space for likelihood estimation with censorship, which leads to weak generalization. In this paper, we propose Implicit Survival Function (ISF) based on Implicit Neural Representation for survival distribution estimation without strong assumptions,and employ numerical integration to approximate the cumulative distribution function for prediction and optimization. Experimental results show that ISF outperforms the state-of-the-art methods in three public datasets and has robustness to the hyperparameter controlling estimation precision.

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Numerical IntegrationSurvival Analysis

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