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- W2948163621 abstract "We propose a nonparametric test of independence, termed OPT-HSIC, between a covariate and a right-censored lifetime. Because the presence of censoring creates a challenge in applying the standard permutation-based testing approaches, we use optimal transport to transform the censored dataset into an uncensored one, while preserving the relevant dependencies. We then apply a permutation test using the kernel-based dependence measure as a statistic to the transformed dataset. The type 1 error is proven to be correct in the case where censoring is independent of the covariate. Experiments indicate that OPT-HSIC has power against a much wider class of alternatives than Cox proportional hazards regression and that it has the correct type 1 control even in the challenging cases where censoring strongly depends on the covariate." @default.
- W2948163621 created "2019-06-14" @default.
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- W2948163621 date "2019-06-10" @default.
- W2948163621 modified "2023-09-27" @default.
- W2948163621 title "Nonparametric Independence Testing for Right-Censored Data using Optimal Transport" @default.
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