Start Training Sessions With Best Performing Model

[ncjhughes]

In the RubixML/Sentiment train.php example, it creates a new model with:

$estimator = new PersistentModel(
    new Pipeline([
        new TextNormalizer(),
        new WordCountVectorizer(10000, 0.00008, 0.4, new NGram(1, 2)),
        new TfIdfTransformer(),
        new ZScaleStandardizer(),
    ], new MultilayerPerceptron([
        new Dense(100),
        new Activation(new LeakyReLU()),
        new Dense(100),
        new Activation(new LeakyReLU()),
        new Dense(100, 0.0, false),
        new BatchNorm(),
        new Activation(new LeakyReLU()),
        new Dense(50),
        new PReLU(),
        new Dense(50),
        new PReLU(),
    ], 256, new AdaMax(0.0001))),
    new Filesystem('sentiment.rbx', true)
);

If the file sentiment.rbx doesn't exist, it creates it.

Is there a way to start a training session from an existing model instead of from scratch? I save my best performing model and I was hoping I could get even better models by tweaking them instead of creating new ones each time.