The majority of automated machine learning (AutoML) solutions are developed in Python, however a large percentage of data scientists are associated with the R language. Unfortunately, there are limited R solutions available. Moreover high entry level means they are not accessible to everyone, due to required knowledge about machine learning (ML). To fill this gap, we present the forester package, which offers ease of use regardless of the user's proficiency in the area of machine learning. The forester is an open-source AutoML package implemented in R designed for training high-quality tree-based models on tabular data. It fully supports binary and multiclass classification, regression, and partially survival analysis tasks. With just a few functions, the user is capable of detecting issues regarding the data quality, preparing the preprocessing pipeline, training and tuning tree-based models, evaluating the results, and creating the report for further analysis.

Welcome to the second part of the forester blog. In the previous part, we explained the main idea of the forester package, the motivations behind it, its advantages, and the innovations it brings to the ML world. You should definitely check it out! In this part, however, we will focus on showing the wide range of possibilities of the forester package and things you can achieve with it. We will present you the main functions of the package with their parameters and show how you can use them in your problems.