concept regressor in category machine learning

This is an excerpt from Manning's book Real-World Machine Learning. Login to get full access to this book.

Not every machine-learning problem is about putting records into classes. Sometimes the target variable takes on numerical values—for example, when predicting dollar values in a financial model. We call the act of predicting numerical values regression, and the model itself a regressor. Figure 3.12 illustrates the concept of regression.

Figure 3.12. In this regression process, the regressor is predicting the numerical value of a record.

Figure 3.12. In this regression process, the regressor is predicting the numerical value of a record.