InstanceSet Class Reference

InstanceSet class. Interface for loading training/testing data.

#include <instance_set.h>

List of all members.

Public Member Functions
	InstanceSet ()
	Empty constructor.
void	save_var (int var, vector< float > *target)
	copy a variable array out
void	load_var (int var, const vector< float > &)
	load a variable array in
void	permute (int var, unsigned int *seed)
	permute a variable's instances (shuffle)
void	create_sorted_indices ()
	sort the variables
const vector< int > &	get_sorted_indices (int attribute) const
	Sorted indices (available after create_sorted_indices).
int	mode_label () const
	Most common label.
unsigned char	label (int i) const
	Get a particular instance's label.
unsigned int	size () const
	Number of instances.
unsigned int	num_attributes () const
	Number of attributes.
float	get_attribute (int i, int attr) const
	Get a particular instance's attribute.
string	get_varname (int i) const
	Get a variable name (useful if there is a header with var.
Static Public Member Functions
InstanceSet *	create_subset (const InstanceSet &, const weight_list &)
	Named constructor - create a subset from an existing instanceset.
InstanceSet *	load_csv_and_labels (const string &data, const string &labels, bool header=false, const string &delim=",")
	Named constructor - load from csv file and a label file.
InstanceSet *	load_libsvm (const string &data, int num_features)
	Load from a libsvm formatted file.

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Member Function Documentation

InstanceSet * create_subset (  const InstanceSet &  set, const weight_list &  wl )  [static]

Named constructor for creating a subset from an existing set Parameters: set  existing set wl  non-zeroes weights

InstanceSet * load_libsvm (  const string &  data, int  nf )  [static]

Named constructor for loading from a .libsvm format Parameters: data  filename nf  number of features (makes life easier to specify this)

void permute (  int  var, unsigned int *  seed )

Permute method Used for variable importance

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The documentation for this class was generated from the following files:

• instance_set.h
• instance_set.cc

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