13.6.5. Macro “modelerFlowrateNeuralNetworksLoadingPMML.C”

13.6.5.1. Objective

The objective of this macro is to build a surrogate model (an Artificial Neural Network) from a PMML file.

13.6.5.2. Macro Uranie

    // Create a TDataServer
    TDataServer * tds = new TDataServer("tdsFlowrate", "tds for flowrate");
    TDataServer * tdsv = new TDataServer("tdsv", "tds for surrogate model");

    // Load a database in an ASCII file
    tds->fileDataRead("_flowrate_sampler_launcher_app_.dat");

    TCanvas *c = new TCanvas("c1", "Graph for the Macro modeler",5,64,1270,667);
    // Build a surrogate model (Artificial Neural Networks) from the PMML file
    TANNModeler* tann = new TANNModeler(tds, "uranie_ann_flowrate.pmml","ANNflowrate");

    // export the surrogate model in a C file
    tann->exportFunction("c++", "uranie_ann_flowrate_loaded","ANNflowrate");
    // load the surrogate model in the C file
    gROOT->LoadMacro("uranie_ann_flowrate_loaded.C");

    tdsv->fileDataRead("_flowrate_sampler_launcher_val_.dat");

    cout << tdsv->getNPatterns() << endl;

    // evaluate the surrogate model on the database
    TLauncherFunction * tlf = new TLauncherFunction(tdsv, "ANNflowrate", "rw:r:tu:tl:hu:hl:l:kw", "yann");
    tlf->run();

    tdsv->startViewer();

    tdsv->Draw("yann:yhat");
    //  tdsv->draw("yhat");

A TDataServer loads _flowrate_sampler_launcher_app_.dat:

    TDataServer * tds = new TDataServer("tdsFlowrate", "tds for flowrate");
    tds->fileDataRead("_flowrate_sampler_launcher_app_.dat");

The surrogate model is loaded from a PMML file:

    TANNModeler* tann = new TANNModeler(tds, "uranie_ann_flowrate.pmml","ANNflowrate");

The model is exported in an external file in C++ language "uranie_ann_flowrate_loaded.C" where the function name is ANNflowrate:

    tann->exportFunction("c++", "uranie_ann_flowrate_loaded","ANNflowrate");

The model is loaded from the macro "uranie_ann_flowrate_loaded.C" and applied on the database with the function ANNflowrate:

    TDataServer * tdsv = new TDataServer("tdsv", "tds for surrogate model");
    gROOT->LoadMacro("uranie_ann_flowrate_loaded.C");
    tdsv->fileDataRead("_flowrate_sampler_launcher_val_.dat");
    TLauncherFunction * tlf = new TLauncherFunction(tdsv, "ANNflowrate", "rw:r:tu:tl:hu:hl:l:kw", "yann");
    tlf->run();

13.6.5.3. Graph

Figure 13.41 Graph of the macro “modelerFlowrateNeuralNetworksLoadingPMML.C”

13.6.5.4. Console

--- Uranie v4.11/0 --- Developed with ROOT (6.36.06)
                      Copyright (C) 2013-2026 CEA/DES 
                      Contact: support-uranie@cea.fr 
                      Date: Thu Feb 12, 2026

PMML Constructor: uranie_ann_flowrate.pmml

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*** TModeler::exportFunction lang[c++] file[uranie_ann_flowrate_loaded] name[ANNflowrate] soption[]

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*** exportFunction lang[c++] file[uranie_ann_flowrate_loaded] name[ANNflowrate]
*** End Of exportFunction
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