Reporting/plot_corr needs "exclude"

[kschelth]

First off, make sure to check your support options.

The preferred way to resolve usage related matters is through the docs which are maintained up-to-date with the latest version of Talos.

If you do end up asking for support in a new issue, make sure to follow the below steps carefully.

1) Confirm the below

• [x] I have looked for an answer in the Docs
• [x] My Python version is 3.5 or higher
• [x] I have searched through the issues Issues for a duplicate
• [x] I've tested that my Keras model works as a stand-alone

2) Include the output of:

talos.__version__=0.6.6

3) Explain clearly what you are trying to achieve

I want to plot the correlations from "val_loss" with all paramters: r = talos.Reporting(file) r.plot_hist(metric='val_loss',bins=30) r.plot_corr('val_loss',exclude='lossfunction') plt.show()

I got the error that I have to use "exclude", but I really don´t know in which manner it would be appropriate. The code seems to need a list, but when I give him a list, it does not work.

4) Explain what you have already tried

It tried something like this:

1. r.plot_corr('val_loss',exclude='lossfunction') -->TypeError: can only concatenate str (not "list") to str
2. r.plot_corr('val_loss',exclude=['lossfunction']) --> ValueError: zero-size array to reduction operation minimum which has no identity
3. r.plot_corr(metric='val_loss',exclude=[]) --> "

So, the model and hyperparameter tuning works, it is just about the visualization. Hence, to focus on the problem, I have not included the model and whole code. If this is necessary, please let me know!

5) Provide a code-complete reference

• [ ] My support question includes an input model
• [ ] My support question includes a parameter dictionary
• [ ] My support question includes a Scan() command
• [ ] My support question includes a link to a sample of the data

NOTE: If the data is sensitive and can't be shared, create dummy data that mimics it.

A self-contained Jupyter Notebook, Google Colab, or similar is highly preferred and will speed up helping you with your issue.

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[mikkokotila]

exclude is so that you can drop columns (usually metrics) because doing a statistical correlation for example with three different metrics makes no sense. Just input the columns to drop as a list using a string value which is exactly like the column name is. That will work.

[kschelth]

Thank you very much for your response. I adjusted the code with the exact names of the metrics (except val loss, which is the one I want to plot):

r.plot_corr('val_loss',exclude=['val_mse','val_f1score','loss','mse','f1score'])

Unfortunately it still does not work. Error message: "ValueError: zero-size array to reduction operation minimum which has no identity"

What am I doing wrong?

Thank you in advance for your help!

[mikkokotila]

Please post the entire trace.

[kschelth]

The model:

def modelbuilding_regression(X_train,y_train,X_test,y_test,params):
    model = Sequential()
    ####INPUT LAYER####
    model.add(Dense(params['neurons'], input_dim=X_train.shape[1], activation=params['activation'], kernel_initializer=params['kernel_initializer']))
    model.add(Dropout(params['dropout']))
    ####HIDDEN LAYERS####
    talos.hidden_layers(model, params['hidden_layers'], 1)

    ####OUTPUT LAYER####
    model.add(Dense(1, activation=params['last_activation'],kernel_initializer=params['kernel_initializer']))

    model.compile(loss=params['lossfunction'],
                  optimizer=params['optimizer'],
                  metrics=['mse', talos.utils.metrics.f1score])

    history = model.fit(X_train, y_train,
              batch_size=params['batch_size'],
              epochs=params['epochs'],
              callbacks=[early_stopper(params['epochs'])],
              verbose=0,
              validation_data=(X_test, y_test))

    return history, model

The script to perform the experiment:

X_train, X_test, y_train, y_test = train_test_split(data_inp, data_label_normalized, test_size=0.4)
p = {'lr': (0.5, 5, 10),
       'neurons': (3, 126, 512),
       'hidden_layers': [0, 1, 2],
       'batch_size': (10, 50, 100),
       'epochs': [70],
       'dropout': (0, 0.05, 0.1, 0.5),
       'kernel_initializer': ['uniform', 'normal'],
       'optimizer': ['Adam', 'Nadam', 'RMSprop'],
       'lossfunction': [loss_RMSLE],
       'activation': ['sigmoid', 'relu', 'elu'],
       'last_activation': ['sigmoid']}

    expname='HPtuning'
    h = talos.Scan(x=X_train.to_numpy(),
                   y=y_train.to_numpy(),
                   x_val=X_test.to_numpy(),
                   y_val=y_test.to_numpy(),
                   model=modelbuilding_regression,
                   reduction_metric='val_loss',
                   minimize_loss=True,
                   params=p,
                   experiment_name=expname,
                   print_params=True,
                   round_limit=1)

    r= talos.Reporting(latest_file)
    r.plot_hist(metric='val_loss',bins=30)
    r.plot_line(metric='val_loss')
    r.plot_corr('val_loss',exclude=['val_mse','val_f1score','loss','mse','f1score'])
    plt.show()

[mikkokotila]

Can you post the entire trace i.e. the entire message with the error.