When it comes to feature stores, there are two main approaches to feature engineering. One approach is to build a domain-specific language (DSL) that covers all the possible feature engineering steps (e.g., aggregations, dimensionality reduction, and transformations) that a data scientist might need. The second approach... Read more

Feature stores began in the world of Big Data, with Spark being the feature engineering platform for Michelangelo (the first feature store) and Hopsworks (the first open-source feature store). Nowadays, the modern data stack has assumed the role of Spark for feature stores – feature engineering... Read more