xgboost_rs

Struct FeatureMap

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pub struct FeatureMap(/* private fields */);
Expand description

Maps a feature index to a name and type, used when dumping models as text.

See dump_model for usage.

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impl FeatureMap

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pub fn from_file<P: AsRef<Path>>(path: P) -> Result<FeatureMap>

Read a FeatureMap from a file at given path.

File should contain one feature definition per line, and be of the form:

<number>\t<name>\t<type>\n

Type should be one of:

  • i - binary feature
  • q - quantitative feature
  • int - integer features

E.g.:

0   age int
1   is-parent?=yes  i
2   is-parent?=no   i
3   income  int
§Panics

Will panic, if the given FeatureMap file cannot be loaded.

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type Error = <U as TryFrom<T>>::Error

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