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I have 2 datasets (D1, D2) to train 2 models (M1, M2).

  • M1 is a probabilistic classifier, which outputs soft labels (probabilities of a sample belonging to each class) for a binary classification problem, realized by a sklearn.svm.SVC(probability=True).

  • M2 is a generative model, which generates samples that belong to the desired class. The input to this model is the soft class label and some other properties.

  • D1 has samples, their properties and their binary labels (either 0 or 1) which serve as ground truth to train M1.

  • D2 has unlabeled samples and their properties. Therefore, the trained M1 model is used to label them and only then they are used to train M2.

My problem:

I want to use D1 as input to my generative model M2. However I am unsure whether I should use the ground truth "hard" labels (integers 0 or 1) along with the other properties as inputs to M2, or firstly use M1 to back-calculate the real-valued soft labels of D1 and feed them to M1.

I hope the diagram sheds some light on my task.

enter image description here

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  • $\begingroup$ Is D1 ever going to change? i.e. can we understand D1 as a fixed way of "tagging" D2? $\endgroup$
    – grochmal
    Jun 18, 2019 at 0:39
  • $\begingroup$ D1 will never change and you are correct, it is somehow a fixed way of tagging D2 $\endgroup$
    – pcko1
    Jun 18, 2019 at 8:40

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