DSPA Chapter 14 Improvement of Model Performance
From Tina Chang on July 17th, 2017
We already explored several alternative machine learning (ML) methods for prediction, classification, clustering and outcome forecasting. In many situations, we derive models by estimating model coefficients or parameters. The main question now is How can we adopt the advantages of crowdsourcing biosocial networking to aggregate different predictive analytics strategies? Are there reasons to believe that such ensembles of forecasting methods may actually improve the performance (e.g., better prediction) of the resulting consensus meta-algorithm? In this chapter, we are going to introduce ways that we can search for optimal parameters for a single ML method as well as aggregate different methods into ensembles to enhance their collective performance relative to any of the individual methods part of the meta-aggregate.