What Is Correlation In Machine Learning. Jan 22 2019 Correlation can help in predicting one attribute from another Great way to impute missing values. On a dataset with many attributes the set of correlation values between pairs of its attributes form a matrix which is called a correlation matrix.
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Predictors which are uncorrelated with the objective variable are probably good candidates to trim from the model shoe size is not a useful predictor for salary. A Correlation of 1 indicates a perfect positive relationship. These variables can be input data features which have been used to forecast our target variable.
Although this correlation is fairly obvious your data may contain unsuspected correlations.
Correlation is a statistical technique that can show whether and how strongly pairs of variables are related. Sep 21 2015 Correlation can be an important tool for feature engineering in building machine learning models. A correlation is an association. C45 a decision tree learner IB1 an instance based learner.
