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## Tuning API

The tuning tool can be invoked from our C, C++, Java, .NET, and Python interfaces. The tool behaves slightly differently when invoked from these interfaces. Rather than writing the results to a set of files, upon completion the tool populates a TuneResultCount attribute, which gives a count of the number of improving parameter sets that were found and retained. The user program can then query the value of this attribute, and then use the GetTuneResult method to copy any of these parameter sets into a model (using C, C++, Java, .NET, or Python). Once loaded into the model, the parameter set can be used to perform a subsequent optimization, or the list of changed parameters can be written to a .prm file using the appropriate Write routine (from C, C++, Java, .NET, or Python).