AI-XGBoost

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lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=item handle

instance of data matrix to be sliced

=item idxset

index set

=item len

length of index set

=item out

a sliced new matrix

=back

=head2 XGDMatrixNumRow

Get number of rows.

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=item field

field name, can be label, weight

=item array

pointer to float vector

=item len

length of array

=back

=head2 XGDMatrixSetUIntInfo

Set uint32 vector to a content in info

Parameters:

=over 4

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=item field

field name, can be label, weight

=item array

pointer to unsigned int vector

=item len

length of array

=back

=head2 XGDMatrixSetGroup

Set label of the training matrix

Parameters:

=over 4

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=item handle

a instance of data matrix

=item group

pointer to group size

=item len

length of the array

=back

=head2 XGDMatrixGetFloatInfo

Get float info vector from matrix

Parameters:

=over 4

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=item handle

a instance of data matrix

=item field

field name

=item out_len

used to set result length

=item out_dptr

pointer to the result

=back

=head2 XGDMatrixGetUIntInfo

Get uint32 info vector from matrix

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=item handle

a instance of data matrix

=item field

field name

=item out_len

The length of the field

=item out_dptr

pointer to the result

=back

=head2 XGDMatrixFree

Free space in data matrix

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

Parameters:

=over 4

=item dmats 

matrices that are set to be cached

=item len 

length of dmats

=item out 

handle to the result booster

=back

=head2 XGBoosterFree

Free obj in handle

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=item grad

gradient statistics

=item hess

second order gradinet statistics

=item len

length of grad/hess array

=back

=head2 XGBoosterUpdateOneIter

Update the model in one round using dtrain

Parameters:

=over 4

lib/AI/XGBoost/CAPI/RAW.pm  view on Meta::CPAN

=back

=item ntree_limit 

limit number of trees used for prediction, this is only valid for boosted trees
when the parameter is set to 0, we will use all the trees

=item out_len 

used to store length of returning result

=item out_result 

used to set a pointer to array

=back

=head2 XGBoosterLoadModel

Load model form existing file