R: Callback closure for saving a model file.

cb.save.model {xgboost} | R Documentation

## Callback closure for saving a model file.

### Description

Callback closure for saving a model file.

### Usage

    cb.save.model(save_period = 0, save_name = "xgboost.model")

### Arguments

`save_period` | save the model to disk after every `save_period` iterations; 0 means save the model at the end.
`save_name` | the name or path for the saved model file. It can contain a `sprintf` formatting specifier to include the integer iteration number in the file name. E.g., with `save_name` = 'xgboost_ the file saved at iteration 50 would be named "xgboost_0050.model".

### Details

This callback function allows to save an xgb-model file, either periodically after each `save_period`'s or at the end.

Callback function expects the following values to be set in its calling frame: `bst`, `iteration`, `begin_iteration`, `end_iteration`.

### See Also

`callbacks`

[Package xgboost version 0.82.0.1 Index]