Package: keras2pmml
Keras2pmml is simple exporter for Keras models (for supported models see bellow) into PMML text format which address
the problems mentioned bellow.Storing predictive models using binary format (e.g. Pickle) may be dangerous from several perspectives - naming few:binary compatibility:you update the libraries and may not be able to open the model serialized with older versiondangerous code: when you would use model made by someone elseinterpretability: model cannot be easily opened and reviewed by humanetc.In addition the PMML is able to persist scaling of the raw input features which helps gradient descent to run smoothly through optimization space.InstallationTo install keras2pmml, simply:$pipinstallkeras2pmmlExampleExample on Iris data - for more examples see the examples folder.fromkeras2pmmlimportkeras2pmmlfromsklearn.datasetsimportload_irisimportnumpyasnpimporttheanofromsklearn.cross_validationimporttrain_test_splitfromsklearn.preprocessingimportStandardScalerfromkeras.utilsimportnp_utilsfromkeras.modelsimportSequentialfromkeras.layers.coreimportDenseiris=load_iris()X=iris.datay=iris.targettheano.config.floatX='float32'X=X.astype(theano.config.floatX)y=y.astype(np.int32)X_train,X_test,y_train,y_test=train_test_split(X,y,test_size=.3)std=StandardScaler()X_train_scaled=std.fit_transform(X_train)X_test_scaled=std.transform(X_test)y_train_ohe=np_utils.to_categorical(y_train)y_test_ohe=np_utils.to_categorical(y_test)model=Sequential()model.add(Dense(input_dim=X_train.shape[1],output_dim=5,activation='tanh'))model.add(Dense(input_dim=5,output_dim=y_test_ohe.shape[1],activation='sigmoid'))model.compile(loss='categorical_crossentropy',optimizer='sgd')model.fit(X_train_scaled,y_train_ohe,nb_epoch=10,batch_size=1,verbose=3,validation_data=(X_test_scaled,y_test_ohe))params={'feature_names':['sepal_length','sepal_width','petal_length','petal_width'],'target_values':['setosa','virginica','versicolor'],'target_name':'specie','copyright':'Václav Čadek','description':'Simple Keras model for Iris dataset.','model_name':'Iris Model'}keras2pmml(estimator=model,transformer=std,file='keras_iris.pmml',**params)Params explainedestimator: Keras model to be exported as PMML (for supported models - see bellow).transformer: if provided (and it’s supported - see bellow) then scaling is applied to data fields.file: name of the file where the PMML will be exported.feature_names: when provided and have same shape as input layer, then features will have custom names, otherwise generic names (x0,…, xn-1) will be used.target_values: when provided and have same shape as output layer, then target values will have custom names, otherwise generic names (y0,…, yn-1) will be used.target_name: when provided then target variable will have custom name, otherwise generic nameclasswill be used.copyright: who is the author of the model.description: optional parameter that setsdescriptionwithin PMML document.model_name: optional parameter that setsmodel_namewithin PMML document.What is supported?Modelskeras.models.SequentialActivation functionstanhsigmoid/logisticScalerssklearn.preprocessing.StandardScalersklearn.preprocessing.MinMaxScalerLicenseThis software is licensed under MIT licence.https://opensource.org/licenses/MIT