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lib/AI/XGBoost/DMatrix.pm  view on Meta::CPAN

=over 4

=item data

Array with the labels

=back

=head2 set_label_pdl

Set label of DMatrix. This label is the "classes" in classification problems

=head3 Parameters

=over 4

=item data

Piddle with the labels

=back

=head2 get_label

Get label of DMatrix. This label is the "classes" in classification problems

=head2 set_weight

Set weight of each instance

=head3 Parameters

=over 4

=item weight

Array with the weights

=back

=head2 set_weight_pdl

Set weight of each instance

=head3 Parameters

=over 4

=item weight

pdl with the weights

=back

=head2 get_weight

Get the weight of each instance

=head2 set_base_margin

Set base margin of booster to start from

=head3 Parameters

=over 4

=item margin

Array with the margins

=back

=head2 get_base_margin

Get the base margin

=head2 set_group

Set group size

=head3 Parameters

=over 4

=item group

Array with the size of each group

=back

=head2 num_row

Number of rows

=head2 num_col

Number of columns

=head2 dims

Dimensions of the matrix. That is: rows, columns

=head2 slice

Slice the DMatrix and return a new DMatrix tha only contains
the list of indices

=head3 Parameters

=over 4

=item list_of_indices

Reference to an array of indices

=back

=head2 DEMOLISH

Free the DMatrix