Episode

Pyversity with Thomas van Dongen - Weaviate Podcast #132!

Podcast: Weaviate Podcast
Published: Dec 8, 2025
Duration seconds: 3631
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Summary

Thomas van Dongen is the head of AI engineering at Springer Nature and the creator of Pyversity! Pyversity is a fast, lightweight open-source Python library for diversifying retrieval results. Retrieval systems often return highly similar items. Pyversity efficiently re-ranks these results to encourage diversity, surfacing items that remain relevant but less redundant. It implements several popular diversification strategies such as MMR, MSD, DPP, and Cover with a clear, unified API.