fastfun {DiceOptim} | R Documentation |

## Fastfun function

### Description

Modification of an R function to be used as with methods `predict`

and `update`

(similar to a `km`

object).
It creates an S4 object which contains the values corresponding to evaluations of other costly observations.
It is useful when an objective can be evaluated fast.

### Usage

```
fastfun(fn, design, response = NULL)
```

### Arguments

`fn` |
the evaluator function, found by a call to |

`design` |
a data frame representing the design of experiments. The ith row contains the values of the d input variables corresponding to the ith evaluation. |

`response` |
optional vector (or 1-column matrix or data frame) containing the values of the 1-dimensional output given by the objective function at the design points. |

### Value

An object of class `fastfun-class`

.

[Package

*DiceOptim*version 2.1.1 Index]