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    • Nonparametric estimation of the cross ratio function 

      Abrams, Steven; Swanepoel, Jan; Veraverbeke, Noël; Janssen, Paul (Springer, 2019)
      The cross ratio function (CRF) is a commonly used tool to describe local dependence between two correlated variables. Being a ratio of conditional hazards, the CRF can be rewritten in terms of (first and second derivatives ...