ucv {MASS} | R Documentation |

## Unbiased Cross-Validation for Bandwidth Selection

### Description

Uses unbiased cross-validation to select the bandwidth of a Gaussian kernel density estimator.

### Usage

```
ucv(x, nb = 1000, lower, upper)
```

### Arguments

`x` |
a numeric vector |

`nb` |
number of bins to use. |

`lower` , `upper` |
Range over which to minimize. The default is almost always satisfactory. |

### Value

a bandwidth.

### References

Scott, D. W. (1992)
*Multivariate Density Estimation: Theory, Practice, and Visualization.*
Wiley.

Venables, W. N. and Ripley, B. D. (2002)
*Modern Applied Statistics with S.* Fourth edition. Springer.

### See Also

### Examples

```
ucv(geyser$duration)
```

[Package

*MASS*version 7.3-60.2 Index]