Conducting machine learning with RHadoop

In the previous chapters, we have demonstrated how powerful R is when used to solve machine learning problems. Also, we have shown that the use of Hadoop allows R to process big data in parallel. At this point, some may believe that the use of RHadoop can easily solve machine learning problems of big data via numerous existing machine learning packages. However, you cannot use most of these to solve machine learning problems as they cannot be executed in the MapReduce mode. In the following recipe, we will demonstrate how to implement a MapReduce version of linear regression and compare this version with the one using the lm function.

Getting ready

In this recipe, you should have completed...