Regression Algorithms are a type of machine learning algorithm used in Predictive Maintenance to predict a numerical value based on a set of input variables. They are used in maintenance operations and management to identify patterns in data and make predictions about future events. Regression algorithms can be used to forecast maintenance needs, predict equipment failure, and optimize maintenance schedules. They are based on statistical models that use linear and non-linear equations to analyze data and make predictions. Common regression algorithms include linear regression, logistic regression, and polynomial regression.