The MLJAR provides an open-source Automated Machine Learning framework for creating Machine Learning pipelines. It has a built-in heuristic algorithm for hyperparameters tuning based on: random search over a defined set of hyperparameters values, and hill-climbing over best solutions to search for further improvements. This solution works very well on Machine Learning tasks under a selected time budget. However, there might be situations when the model performance is the primary goal and the time needed for computation is not the limit. Thus, we propose the new mode: “Optuna” in the MLJAR framework. In this mode, we utilize the Optuna hyperparameters tuning framework. It is availbale in the mljar-supervised package starting from version 0.10.0.

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