# function for hessian matrix of AUC

### Description

function for hessian matrix of AUC

### Usage

1 |

### Arguments

`beta` |
linear coefficients |

`X` |
m X p data matrix for m non-diseased subjects with p markers |

`Y` |
n X p data matrix for n diseased subjects with p markers |

`lambda` |
the smooth parameter for the Sigmoid function used for the AUC |

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