locfit.quasi {locfit} | R Documentation |

## Local Quasi-Likelihood with global reweighting.

### Description

`locfit.quasi`

assumes a specified mean-variance relation,
and performs iterartive reweighted local regression under this
assumption. This is appropriate for local quasi-likelihood models,
and is an alternative to specifying a family such as `"qpoisson"`

.

`locfit.quasi`

is designed as a front end
to `locfit.raw`

with data vectors, or as an intemediary
between `locfit`

and `locfit.raw`

with a
model formula. If you can stand the syntax, the second calling
sequence above will be slightly more efficient than the third.

### Usage

```
locfit.quasi(x, y, weights, ..., iter=3, var=abs)
```

### Arguments

`x` |
Either a |

`y` |
If |

`weights` |
Case weights to use in the fitting. |

`...` |
Other arguments to |

`iter` |
Number of EM iterations to perform |

`var` |
Function specifying the assumed relation between the mean and variance. |

### Value

`"locfit"`

object.

### See Also

*locfit*version 1.5-9.10 Index]