Description Usage Arguments Details Value Author(s) See Also Examples

The function is multistart version of `searchMinimizer`

which selects the best
root of the quasi-score (if there is any) or a local minimum from all found minima according to the criteria described in the vignette.

1 2 |

`xstart` |
numeric, |

`qsd` |
object of class |

`...` |
arguments passed to |

`nstart` |
number of random samples from which to start local searches (if ' |

`optInfo` |
logical, |

`cl` |
cluster object, |

`verbose` |
if |

The function performs a number of local searches depending which local method '`method`

' was passed to
`searchMinimizer`

. Either the starting points are given by '`xstart`

' or are generated as an augmented
design based on the sample set stored in '`qsd`

'. The function evaluates all found solutions and selects the one which
is best according to the criteria defined in the vignette.

Object of class `QSResult`

and attribute '`roots`

', e.t. the matrix of estimated parameters for which any of
the available minimization methods has been successfully applied. If 'codeoptInfo' is `TRUE`

, then the originally estimtation reuslts
are also returned. The best solution is stored as an attribute named '`par`

' if any could have been found.

M. Baaske

1 2 3 4 5 6 7 8 9 10 11 12 | ```
data(normal)
x0 <- c("mu"=3.5,"sigma"=1.5)
S0 <- multiSearch(xstart=x0,qsd,method=c("qscoring","bobyqa"),
opts=list("ftol_stop"=1e-9,"score_tol"=1e-3),nstart=4,
optInfo=TRUE,verbose=TRUE)
roots <- attr(S0,"roots")
id <- attr(roots,"id")
stopifnot(!is.na(id))
id # index of best root found in matrix roots
attr(roots,"par") # the final parameter estimate w.r.t. id
``` |

mbaaske/qle documentation built on Feb. 3, 2018, 11:02 a.m.

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