データの変換¶

DataRobotは、単一データセットに対する自動および手動の特徴量の変換、および複数データセットに対する特徴量探索など、複数の特徴量エンジニアリング手法をサポートしています。 See the table below to learn about the feature transformation options in DataRobot.

What is feature engineering?¶

Feature engineering is the process of preparing a dataset for machine learning by changing existing features or deriving new features to improve model performance. DataRobot's Automated Feature Engineering uses AI to accelerate the transformation of data into machine learning assets, allowing you to build better machine learning models in less time.

Feature engineering takes place after data preparation and ingest, and before model building.

During EDA1, DataRobot analyzes and profiles every feature in each dataset—detecting feature types, automatically transforming date-type features, and assessing feature quality.

Before model building, you can take further advantage of DataRobot's Automated Feature Engineering by enabling interaction-based transformations for primary datasets or defining relationships between multiple datasets using Feature Discovery. You can also manually transform features in your dataset, including variable type transformations, with functions.

During EDA2, DataRobot uses these known interactions, or relationships, to discover relevant features for your ML models and automatically transforms them to address the unique requirements of each algorithm in the blueprint library.

After model building, navigate to the Leaderboard and select a model. There are a few places you can view which transformations DataRobot performed for individual models during the modeling process: