Re: Inconsistencies between GUI and Java code

> On Nov 21, 2023, at 10:48 AM, Ulrich Mayring <[email protected]> wrote:
> 
> The GUI shows me this command line:
> weka.classifiers.functions.MultilayerPerceptron -L 0.3 -M 0.2 -N 500 -V 0 -S 0 -E 20 -H "9, 15, 6"

> The evaluation results for both methods are different!
> 
> My Java code runs about 3.5 minutes and reports an accuracy of 74.3% and the size of the model, when saved to a file, is 40054 Bytes.
> 
> The Weka GUI runs about 8.5 minutes and reports an accuracy of 75.9% and the size of the model is 41715 KByte.

Possibly the parameter defaults are different in some regard? You could try…

// -L 0.3
classifer.setLearningRate(0.3d);
// -N 500
classifier.setTrainingTime(500);
// -M 0.2
classifier.setMomentum(0.2d);
// -V 0
classifier.setValidationSetSize(0);
// -S 0
classifier.setSeed(0);
// -E 20
classifier.setValidationThreshold(20);

If I understood what the command line options were.

If you want to see what parameters were used for a saved model you could use something like the following…

		try {
			FileInputStream serialFileIn = new FileInputStream(savedModel);
			ObjectInputStream serializedIn = SerializationHelper.getObjectInputStream(serialFileIn);
			StringBuilder sb = new StringBuilder();	
			Object o = serializedIn.readObject();
			if (showOptions) {
				sb.append(o.getClass().toString().substring(6));
			}
			else {
				System.out.println("Model class: " + o.getClass());
			}
			String[] options = null;
			if (o instanceof OptionHandler) {
				options = ((OptionHandler)o).getOptions();
				if (showOptions) {
					for (String option : options) {
						sb.append(" ").append(option);
					}
					System.out.println(sb);
					return;
				}
				else {
					System.out.println("Model options: ");
					for (String option : options) {
				   		System.out.println("   " + option);
					}
				}
			}
			System.out.println("----------");
			System.out.println(o);

Complete source
http://mikehall.pairserver.com/WekaSerialConverter.java

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