Build an open source FeatureHouse in 300 lines of code

Xorq is a Python lib https://github.com/xorq-labs/xorq that provides a declarative syntax for defining portable, composite compute stacks for different AI/ML use cases.

In this example, Xorq is used to compose an open source FeatureHouse that runs on DuckLake and interfaces via Apache Arrow Flight.

The post explains how: - The FeatureHouse is composed with Xorq - Feature leakage is avoided - The FeatureHouse can be ported to any underlying query engine (e.g., Iceberg) - Observability and lineage are handled - Feast can be integrated with it