AnnoyParam {BiocNeighbors} | R Documentation

## The AnnoyParam class

### Description

A class to hold parameters for the Annoy algorithm for approximate nearest neighbor identification.

### Usage

    AnnoyParam(ntrees=50, directory=tempdir(), search.mult=ntrees, distance="Euclidean")

    AnnoyParam_ntrees(x)

    AnnoyParam_directory(x)

    AnnoyParam_search_mult(x)

    ## S4 method for signature 'AnnoyParam'
    show(object)

### Arguments

`ntrees` | Integer scalar, number of trees to use for index generation.
`directory` | String, the directory in which to save the index.
`search.mult` | Numeric scalar, multiplier for the number of points to search.
`distance` | String, the distance metric to use.
`x, object` | A AnnoyParam object.

### Details

The AnnoyParam class holds any parameters associated with running the Annoy algorithm. This generally relates to building of the index - see `buildAnnoy` for details.

### Value

The `AnnoyParam` constructor will return an instance of the AnnoyParam class.

`AnnoyParam_ntrees` will return the number of trees as an integer scalar.

`AnnoyParam_directory` will return the directory as a string.

`AnnoyParam_search_mult` will return the multiplier for the number of points to search.

### Author(s)

Aaron Lun

### See Also

`buildAnnoy`

### Examples

    (out <- AnnoyParam())

    AnnoyParam_ntrees(out)
    AnnoyParam_directory(out)

[Package BiocNeighbors version 1.8.2 Index]