/ 
AI-XGBoost-0.002
River stage zero No dependents
/ AI::XGBoost

NAME

AI::XGBoost - Perl wrapper for XGBoost library https://github.com/dmlc/xgboost

VERSION

version 0.002

SYNOPSIS

use 5.010;
use AI::XGBoost::CAPI;
use FFI::Platypus;

my $silent = 0;
my ($dtrain, $dtest) = (0, 0);

AI::XGBoost::CAPI::XGDMatrixCreateFromFile('agaricus.txt.test', $silent, \$dtest);
AI::XGBoost::CAPI::XGDMatrixCreateFromFile('agaricus.txt.train', $silent, \$dtrain);

my ($rows, $cols) = (0, 0);
AI::XGBoost::CAPI::XGDMatrixNumRow($dtrain, \$rows);
AI::XGBoost::CAPI::XGDMatrixNumCol($dtrain, \$cols);
say "Dimensions: $rows, $cols";

my $booster = 0;

AI::XGBoost::CAPI::XGBoosterCreate( [$dtrain] , 1, \$booster);

for my $iter (0 .. 10) {
    AI::XGBoost::CAPI::XGBoosterUpdateOneIter($booster, $iter, $dtrain);
}

my $out_len = 0;
my $out_result = 0;

AI::XGBoost::CAPI::XGBoosterPredict($booster, $dtest, 0, 0, \$out_len, \$out_result);
my $ffi = FFI::Platypus->new();
my $predictions = $ffi->cast(opaque => "float[$out_len]", $out_result);

#say join "\n", @$predictions;

AI::XGBoost::CAPI::XGBoosterFree($booster);

DESCRIPTION

Perl wrapper for XGBoost library. This version only wraps the C API.

The documentation can be found in AI::XGBoost::CAPI

ROADMAP

The goal is to make a full wrapper for XGBoost.

VERSIONS

0.1

Full raw C API available as AI::XGBoost::CAPI::Raw

0.2

Full C API "easy" to use, with PDL support as AI::XGBoost::CAPI

Easy means clients don't have to use FFI::Platypus or modules dealing with C structures

0.3

Object oriented API Moose based with DMatrix and Booster classes

0.4

Complete object oriented API

AUTHOR

Pablo Rodríguez González <pablo.rodriguez.gonzalez@gmail.com>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2017 by Pablo Rodríguez González.

This is free software, licensed under:

The Apache License, Version 2.0, January 2004