Description Usage Arguments Details Value

Estimate model parameters for d-metrics-based software reliability model.

Generate a list of option values.

1 2 3 4 | ```
fit.srm.logit(formula, data, linkfun = "logit", offset = NULL,
control = list(), ...)
srm.logit.options()
``` |

`formula` |
An object of class formula. A symbolic description of the model to be fitted. The output variable should be the column for the number of faults. |

`data` |
A dataframe for d-metrics and the number of faults. |

`linkfun` |
A character string indicating a linkfunction. See Details. |

`offset` |
An integer. This can be used to specify an a priori known component to be included in the linear predictor during fitting. This should be NULL or a numeric vector of length equal to the number of cases. |

`control` |
A list of control parameters. See Details. |

`...` |
Other parameters. |

The control argument is a list that can supply any of the following components:

- maxiter
An integer for the maximum number of iterations in the fitting algorithm.

- reltol
A numeric value. The algorithm stops if the relative error is less than

*reltol*and the absolute error is less than*abstol*.- abstol
A numeric value. The algorithm stops if the relative error is less than

*reltol*and the absolute error is less than*abstol*.- stopcond
A character string.

*stopcond*gives the criterion for the stop condition of the algorithm. Either llf or parameter is selected.- trace
A logical. If TRUE, the intermediate parameters are printed.

- printsteps
An integer for print.

The linkfun argument can take the following strings:

- logit
A logit function.

- probit
A probit function.

- cloglog
A complementary log-log function.

A list with components;

`initial` |
A vector for initial parameters. |

`srm` |
A class of NHPP. The SRM with the estiamted parameters. |

`llf` |
A numeric value for the maximum log-likelihood function. |

`df` |
An integer for degrees of freedom. |

`convergence` |
A boolean meaning the alorigthm is converged or not. |

`iter` |
An integer for the number of iterations. |

`aerror` |
A numeric value for absolute error. |

`rerror` |
A numeric value for relative error. |

`data` |
The data used. |

`linkfun` |
The linkfunction used. |

`formula` |
The formula supplied. |

`ctime` |
A numeric value for computation time. |

`terms` |
The terms object used. |

`call` |
The method call. |

A list of options.

okamumu/Rsrat documentation built on Oct. 3, 2018, 2:36 a.m.

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