Struct DataReader 

pub struct DataReader { /* private fields */ }

Reads a text dataset of binary features into a Cover.

The default format is one instance per line, whitespace separated, the label in column 0, # starting a comment, and no header. Feature values must be 0 or 1, and labels non-negative integers.

Implementations

impl DataReader

pub fn new() -> Self

A reader with the default format.

pub fn with_format(self, format: DataFormat) -> Self

Sets the column delimiter.

pub fn with_headers(self, has_headers: bool) -> Self

Whether the first data line is a header to skip.

pub fn with_comment_char(self, comment_char: Option<char>) -> Self

Lines starting with this character are ignored.

pub fn with_label_column(self, label_column: Option<usize>) -> Self

Which column holds the label; None for unlabelled data.

pub fn auto_detect_format(self, path: &Path) -> Self

Picks the delimiter from the file extension.

pub fn read_file(&self, path: &Path) -> Result<Cover, DataReaderError>

Reads a dataset file.

Trait Implementations

impl Default for DataReader

fn default() -> Self

Returns the “default value” for a type.