bigml.com を使用して、アイリス データセットの決定木モデルを生成しました。このデシジョン ツリー モデルを PMML としてダウンロードし、ローカル コンピューターでの予測に使用したいと考えています。
bigml からの PMML モデル
<?xml version="1.0" encoding="utf-8"?>
<PMML version="4.2" xmlns="http://www.dmg.org/PMML-4_2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Header description="Generated by BigML"/>
<DataDictionary>
<DataField dataType="double" displayName="Sepal length" name="000001" optype="continuous"/>
<DataField dataType="double" displayName="Sepal width" name="000002" optype="continuous"/>
<DataField dataType="double" displayName="Petal length" name="000003" optype="continuous"/>
<DataField dataType="double" displayName="Petal width" name="000004" optype="continuous"/>
<DataField dataType="string" displayName="Species" name="000005" optype="categorical">
<Value value="Iris-setosa"/>
<Value value="Iris-versicolor"/>
<Value value="Iris-virginica"/>
</DataField>
</DataDictionary>
<TreeModel algorithmName="mtree" functionName="classification" modelName="">
<MiningSchema>
<MiningField name="000001"/>
<MiningField name="000002"/>
<MiningField name="000003"/>
<MiningField name="000004"/>
<MiningField name="000005" usageType="target"/>
</MiningSchema>
<Node recordCount="150" score="Iris-setosa">
<True/>
<ScoreDistribution recordCount="50" value="Iris-setosa"/>
<ScoreDistribution recordCount="50" value="Iris-versicolor"/>
<ScoreDistribution recordCount="50" value="Iris-virginica"/>
<Node recordCount="100" score="Iris-versicolor">
<SimplePredicate field="000003" operator="greaterThan" value="2.45"/>
<ScoreDistribution recordCount="50" value="Iris-versicolor"/>
<ScoreDistribution recordCount="50" value="Iris-virginica"/>
<Node recordCount="46" score="Iris-virginica">
<SimplePredicate field="000004" operator="greaterThan" value="1.75"/>
<ScoreDistribution recordCount="45" value="Iris-virginica"/>
<ScoreDistribution recordCount="1" value="Iris-versicolor"/>
<Node recordCount="43" score="Iris-virginica">
<SimplePredicate field="000003" operator="greaterThan" value="4.85"/>
<ScoreDistribution recordCount="43" value="Iris-virginica"/>
</Node>
<Node recordCount="3" score="Iris-virginica">
<SimplePredicate field="000003" operator="lessOrEqual" value="4.85"/>
<ScoreDistribution recordCount="2" value="Iris-virginica"/>
<ScoreDistribution recordCount="1" value="Iris-versicolor"/>
<Node recordCount="1" score="Iris-versicolor">
<SimplePredicate field="000002" operator="greaterThan" value="3.1"/>
<ScoreDistribution recordCount="1" value="Iris-versicolor"/>
</Node>
<Node recordCount="2" score="Iris-virginica">
<SimplePredicate field="000002" operator="lessOrEqual" value="3.1"/>
<ScoreDistribution recordCount="2" value="Iris-virginica"/>
</Node>
</Node>
</Node>
<Node recordCount="54" score="Iris-versicolor">
<SimplePredicate field="000004" operator="lessOrEqual" value="1.75"/>
<ScoreDistribution recordCount="49" value="Iris-versicolor"/>
<ScoreDistribution recordCount="5" value="Iris-virginica"/>
<Node recordCount="6" score="Iris-virginica">
<SimplePredicate field="000003" operator="greaterThan" value="4.95"/>
<ScoreDistribution recordCount="4" value="Iris-virginica"/>
<ScoreDistribution recordCount="2" value="Iris-versicolor"/>
<Node recordCount="3" score="Iris-versicolor">
<SimplePredicate field="000004" operator="greaterThan" value="1.55"/>
<ScoreDistribution recordCount="2" value="Iris-versicolor"/>
<ScoreDistribution recordCount="1" value="Iris-virginica"/>
<Node recordCount="1" score="Iris-virginica">
<SimplePredicate field="000003" operator="greaterThan" value="5.45"/>
<ScoreDistribution recordCount="1" value="Iris-virginica"/>
</Node>
<Node recordCount="2" score="Iris-versicolor">
<SimplePredicate field="000003" operator="lessOrEqual" value="5.45"/>
<ScoreDistribution recordCount="2" value="Iris-versicolor"/>
</Node>
</Node>
<Node recordCount="3" score="Iris-virginica">
<SimplePredicate field="000004" operator="lessOrEqual" value="1.55"/>
<ScoreDistribution recordCount="3" value="Iris-virginica"/>
</Node>
</Node>
<Node recordCount="48" score="Iris-versicolor">
<SimplePredicate field="000003" operator="lessOrEqual" value="4.95"/>
<ScoreDistribution recordCount="47" value="Iris-versicolor"/>
<ScoreDistribution recordCount="1" value="Iris-virginica"/>
<Node recordCount="1" score="Iris-virginica">
<SimplePredicate field="000004" operator="greaterThan" value="1.65"/>
<ScoreDistribution recordCount="1" value="Iris-virginica"/>
</Node>
<Node recordCount="47" score="Iris-versicolor">
<SimplePredicate field="000004" operator="lessOrEqual" value="1.65"/>
<ScoreDistribution recordCount="47" value="Iris-versicolor"/>
</Node>
</Node>
</Node>
</Node>
<Node recordCount="50" score="Iris-setosa">
<SimplePredicate field="000003" operator="lessOrEqual" value="2.45"/>
<ScoreDistribution recordCount="50" value="Iris-setosa"/>
</Node>
</Node>
</TreeModel>
</PMML>
私は通常、機械学習に R を使用しており、このモデルを読み込んでシステムの予測に使用したいと考えています。R自体はpmmlパッケージを持っていますが、予測には使えないようです。Rでの予測にこのPMMLモデルを使用できる他の方法はありますか?それが不可能な場合、このPMMLモデルをpythonやwekaなどの他の言語で使用できますか? はいの場合、どうすればよいですか(コードが必要です)。
bigml の python モデル
def predict_species(sepal_width=None,
petal_length=None,
petal_width=None):
""" Predictor for Species from
This is perhaps the best known database to be found in the pattern recognition literature. Fisher's paper is a classic
in the field and is referenced frequently to this day. (See Duda & Hart, for example.) The data set contains 3 classes
of 50 instances each, where each class refers to a type of iris plant.
Source
Iris Data Set[*]
Bache, K. & Lichman, M. (2013). UCI Machine Learning Repository[*]. Irvine, CA: University of California, School of Information and Computer Science.
[*]Iris Data Set: http://archive.ics.uci.edu/ml/datasets/Iris
[*]UCI Machine Learning Repository: http://archive.ics.uci.edu/ml
"""
if (petal_length is None):
return u'Iris-setosa'
if (petal_length > 2.45):
if (petal_width is None):
return u'Iris-versicolor'
if (petal_width > 1.75):
if (petal_length > 4.85):
return u'Iris-virginica'
if (petal_length <= 4.85):
if (sepal_width is None):
return u'Iris-virginica'
if (sepal_width > 3.1):
return u'Iris-versicolor'
if (sepal_width <= 3.1):
return u'Iris-virginica'
if (petal_width <= 1.75):
if (petal_length > 4.95):
if (petal_width > 1.55):
if (petal_length > 5.45):
return u'Iris-virginica'
if (petal_length <= 5.45):
return u'Iris-versicolor'
if (petal_width <= 1.55):
return u'Iris-virginica'
if (petal_length <= 4.95):
if (petal_width > 1.65):
return u'Iris-virginica'
if (petal_width <= 1.65):
return u'Iris-versicolor'
if (petal_length <= 2.45):
return u'Iris-setosa'