Logistic Regression

The logistic regression classification algorithm with LASSO (L1) or ridge (L2) regularization.

Inputs

  • Data: input dataset
  • Preprocessor: preprocessing method(s)

Outputs

  • Learner: logistic regression learning algorithm
  • Model: trained model
  • Coefficients: logistic regression coefficients

Logistic Regression learns a Logistic Regression model from the data. It only works for classification tasks.

../../_images/LogisticRegression-stamped.png

  1. A name under which the learner appears in other widgets. The default name is “Logistic Regression”.
  2. Regularization type (either L1 or L2). Set the cost strength (default is C=1).
  3. Press Apply to commit changes. If Apply Automatically is ticked, changes will be communicated automatically.

Example

The widget is used just as any other widget for inducing a classifier. This is an example demonstrating prediction results with logistic regression on the hayes-roth dataset. We first load hayes-roth_learn in the File widget and pass the data to Logistic Regression. Then we pass the trained model to Predictions.

Now we want to predict class value on a new dataset. We load hayes-roth_test in the second File widget and connect it to Predictions. We can now observe class values predicted with Logistic Regression directly in Predictions.

../../_images/LogisticRegression-classification.png